-
TECHNICAL & SERVICE MANUALSAP-KRV93EH +
SAP-CRV93EHSAP-KRV123EH + SAP-CRV123EH
DC INVERTER SPLIT SYSTEM AIR CONDITIONER
SAP-CRV93EHSAP-CRV123EH
AIR CONDITIONER
IMPORTANTThese air conditioners employ newrefrigerant R410A.Pay
special attention whenservicing the unit.
SAP-KRV93EHSAP-KRV123EH
FILE NO.
REFERENCE NO. SM700590W
Indoor Unit Outdoor Unit
Indoor Model No. Product Code No.SAP-KRV93EH 1 852 089
81SAP-KRV123EH 1 852 089 80
Outdoor Model No. Product Code No.SAP-CRV93EH 1 852 089
85SAP-CRV123EH 1 852 089 84
Destination: Europe
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2
IMPORTANT! Please Read Before Starting
This air conditioning system meets strict safety and oper-ating
standards. As the installer or service person, it is animportant
part of your job to install or service the systemso it operates
safely and efficiently.
For safe installation and trouble-free operation, youmust:●
Carefully read this instruction booklet before beginning.● Follow
each installation or repair step exactly as
shown.● Observe all local, state, and national electrical
codes.● Pay close attention to all warning and caution notices
given in this manual.This symbol refers to a haz-ard or unsafe
practice whichcan result in severe personalinjury or death.This
symbol refers to a hazardor unsafe practice which canresult in
personal injury orproduct or property damage.
If Necessary, Get HelpThese instructions are all you need for
most installationsites and maintenance conditions. If you require
help fora special problem, contact our sales/service outlet oryour
certified dealer for additional instructions.
In Case of Improper InstallationThe manufacturer shall in no way
be responsible forimproper installation or maintenance service,
includingfailure to follow the instructions in this document.
SPECIAL PRECAUTIONS
When Wiring
ELECTRICAL SHOCK CAN CAUSESEVERE PERSONAL INJURY OR DEATH.ONLY A
QUALIFIED, EXPERIENCEDELECTRICIAN SHOULD ATTEMPT TOWIRE THIS
SYSTEM.
• Do not supply power to the unit until all wiring and tub-ing
are completed or reconnected and checked.
• Highly dangerous electrical voltages are used in thissystem.
Carefully refer to the wiring diagram andthese instructions when
wiring. Improper connectionsand inadequate grounding can cause
accidentalinjury or death.
• Ground the unit following local electrical codes.• Connect all
wiring tightly. Loose wiring may cause
overheating at connection points and a possible firehazard.
When Transporting
Be careful when picking up and moving the indoor andoutdoor
units. Get a partner to help, and bend yourknees when lifting to
reduce strain on your back. Sharpedges or thin aluminum fins on the
air conditioner cancut your fingers.
When Installing……In a Ceiling or WallMake sure the ceiling/wall
is strong enough to hold theunit’s weight. It may be necessary to
construct a strongwood or metal frame to provide added support.…In
a RoomProperly insulate any tubing run inside a room to
prevent“sweating” that can cause dripping and water damage towalls
and floors.…In Moist or Uneven LocationsUse a raised concrete pad
or concrete blocks to providea solid, level foundation for the
outdoor unit. This pre-vents water damage and abnormal
vibration.…In an Area with High WindsSecurely anchor the outdoor
unit down with bolts and ametal frame. Provide a suitable air
baffle. …In a Snowy Area (for Heat Pump-type Systems)Install the
outdoor unit on a raised platform that is higherthan drifting snow.
Provide snow vents.
When Connecting Refrigerant Tubing• Use the flare method for
connecting tubing.• Apply refrigerant lubricant to the matching
surfaces of
the flare and union tubes before connecting them,then tighten
the nut with a torque wrench for a leak-free connection.
• Check carefully for leaks before starting the test run.
When Servicing• Turn the power OFF at the main power box
(mains)
before opening the unit to check or repair electricalparts and
wiring.
• Keep your fingers and clothing away from any movingparts.
• Clean up the site after you finish, remembering tocheck that
no metal scraps or bits of wiring have beenleft inside the unit
being serviced.
Others
• Ventilate any enclosed areas when installing or testingthe
refrigeration system. Escaped refrigerant gas, oncontact with fire
or heat, can produce dangerouslytoxic gas.
• Confirm upon completing installation that no refriger-ant gas
is leaking. If escaped gas comes in contactwith a stove, gas water
heater, electric room heater orother heat source, it can produce
dangerously toxicgas.
WARNING
WARNING
CAUTION
CAUTION
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3
Table of Contents
Page
1. OPERATING RANGE
................................................................................................................
4
2. SPECIFICATIONS2-1. Unit
Specifications............................................................................................................
52-2. Major Component
Specifications......................................................................................
72-3. Other Component
Specifications......................................................................................
11
3. DIMENSIONAL
DATA................................................................................................................
12
4. REFRIGERANT FLOW DIAGRAM4-1. Refrigerant Flow
Diagram.................................................................................................
14
5. PERFORMANCE DATA5-1. Temperature
Charts..........................................................................................................
155-2. Air Throw Distance
Charts................................................................................................
175-3. Operating Frequency Charts
............................................................................................
19
6. ELECTRICAL DATA6-1. Electrical Characteristics
..................................................................................................
236-2. Electric Wiring Diagrams
..................................................................................................
24
7. INSTALLATION INSTRUCTIONS7-1. Installation Site Selection
.................................................................................................
267-2. Recommended Wire Length and Diameter
......................................................................
287-3. Remote Control Unit Installation
Position.........................................................................
297-4. How to Test Run the Air Conditioner
................................................................................
307-5. Remove the Grille to Install the Indoor
Unit......................................................................
31
8. MAINTENANCE8-1. Address Setting of the Remote Control Unit
....................................................................
328-2. Disconnecting and Connecting Positive Connector for Outdoor
Unit ............................... 33
9. FUNCTIONS9-1. Operation Functions
.........................................................................................................
349-2. Protective
Functions.........................................................................................................
36
10.
TROUBLESHOOTING...............................................................................................................
38
11. CHECKING ELECTRICAL COMPONENTS11-1. Measurement of
Insulation Resistance
............................................................................
4311-2. Checking Continuity of Fuse on PCB Ass’y
.....................................................................
44
12. REFRIGERANT R410A: SPECIAL PRECAUTIONS WHEN SERVICING UNIT
..............................................................
45
INSTRUCTION MANUAL
......................................................................................
52APPENDIX
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4
1. OPERATING RANGETemperature Indoor Air Intake Temp. Outdoor
Air Intake Temp.
CoolingMaximum 32°C D.B. / 23°C W.B. 43°C D.B.Minimum 19°C D.B.
/ 14°C W.B. 19°C D.B.
HeatingMaximum 27°C D.B. 24°C D.B. / 18°C W.B.Minimum 16°C D.B.
–20°C D.B. / –20°C W.B.
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5
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Remarks: Rating conditions are:Cooling: Indoor air temperature
27°C D.B. / 19°C W.B.
Outdoor air temperature 35°C D.B. / 24°C W.B.Heating: Indoor air
temperature 20°C D.B.
Outdoor air temperature 7°C D.B. / 6°C W.B.
2. SPECIFICATIONS2-1. Unit SpecificationsIndoor Unit
SAP-KRV93EHOutdoor Unit SAP-CRV93EH
Power Source 220 – 240V Single-phase 50Hz
Performance Cooling HeatingCapacity kW 2.65 (0.9 – 3.2) 3.60
(0.9 – 5.0)
BTU/h 9,000 (3,100 – 10,900) 12,300 (3,100 – 17,100)Air
circulation (High) m3/h 480 530Moisture removal (High) Liters/h 1.6
—
Electrical Rating Cooling HeatingAvailable voltage range V 198 –
264Running amperes A 3.86 (1.28 – 5.88) 4.81 (1.21 – 6.47)Power
input W 755 (250 – 1,150) 995 (250 – 1,340)Power factor % 85
90C.O.P. W/W 3.51 3.62Compressor locked rotor amperes A 15
FeaturesControls / Temperature control Microprocessor / I.C.
thermisterControl unit Wireless remote control unitTimer ON / OFF
24 hours & Daily program, 1-hour OFFFan speeds Indoor / Outdoor
3 and Auto / 1 (Hi)Airflow direction (Indoor) Horizontal Manual
Vertical AutoAir filter Washable, Anti-MoldCompressor Rotary (DC
inverter)Refrigerant / Amount charged at shipment g R410A /
950Refrigerant control Electric expansion valveOperation sound
Indoor: Hi / Me / Lo dB-A 34 / 31 / 28 34 / 31 / 28
Outdoor: Hi dB-A 46 47Refrigerant tubing connections Flare
typeMax allowable tubing length at shipment m 7.5Refrigerant Narrow
tube mm (in.) 6.35 (1/4)tube diameter Wide tube mm (in.) 9.52
(3/8)Refrigerant tube kit / Accessories Optional / Air clean
filter
Voltage Rating 230V
Dimensions & Weight Indoor Unit Outdoor UnitUnit dimensions
Height mm 285 548
Width mm 825 720Depth mm 189 265
Package dimensions Height mm 350 600Width mm 900 856Depth mm 255
362
Weight Net kg 9.0 34.0Shipping kg 11.0 36.0
Shipping volume m3 0.080 0.186
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6
Indoor Unit SAP-KRV123EHOutdoor Unit SAP-CRV123EH
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Remarks: Rating conditions are:Cooling: Indoor air temperature
27°C D.B. / 19°C W.B.
Outdoor air temperature 35°C D.B. / 24°C W.B.Heating: Indoor air
temperature 20°C D.B.
Outdoor air temperature 7°C D.B. / 6°C W.B.
Power Source 220 – 240V Single-phase 50Hz
Performance Cooling HeatingCapacity kW 3.50 (0.9 – 3.8) 4.20
(0.9 – 5.8)
BTU/h 11,900 (3,100 – 13,000) 14,300 (3,100 – 19,800)Air
circulation (High) m3/h 500 530Moisture removal (High) Liters/h 2.0
—
Electrical Rating Cooling HeatingAvailable voltage range V 198 –
264Running amperes A 5.21 (1.19 – 6.21) 5.48 (1.18 – 7.09)Power
input W 1,090 (250 – 1,300) 1,165 (250 – 1,500)Power factor % 91
92C.O.P. W/W 3.21 3.61Compressor locked rotor amperes A 15
FeaturesControls / Temperature control Microprocessor / I.C.
thermostatControl unit Wireless remote control unitTimer ON / OFF
24 hours & Daily program, 1-hour OFFFan speeds Indoor / Outdoor
3 and Auto / 1 (Hi)Airflow direction (Indoor) Horizontal Manual
Vertical AutoAir filter Washable, Anti-MoldCompressor Rotary (DC
inverter)Refrigerant / Amount charged at shipment g R410A /
1,100Refrigerant control Electric expansion valveOperation sound
Indoor: Hi / Me / Lo dB-A 36 / 33 / 29 34 / 31 / 29
Outdoor: Hi dB-A 47 49Refrigerant tubing connections Flare
typeMax allowable tubing length at shipment m 7.5Refrigerant Narrow
tube mm (in.) 6.35 (1/4)tube diameter Wide tube mm (in.) 9.52
(3/8)Refrigerant tube kit / Accessories Optional / Air clean
filter
Voltage Rating 230V
Dimensions & Weight Indoor Unit Outdoor UnitUnit dimensions
Height mm 285 548
Width mm 825 720Depth mm 189 265
Package dimensions Height mm 350 600Width mm 900 856Depth mm 255
362
Weight Net kg 9.0 35.0Shipping kg 11.0 37.0
Shipping volume m3 0.080 0.186
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7
2-2. Major Component Specifications2-2-1. Indoor Unit
Indoor Unit SAP–KRV93EH
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Control PCBPart No. CB-KRV93EH (POW-KRV93GJH)Controls
MicroprocessorControl circuit fuse 250V 3.15A
Flap Motor and Louver MotorType Stepping motorModel
MP24Z3-12VRating DC 12VCoil resistance (Ambient temp. 25°C) Ω Each
pair of terminals: 400 ± 7%
Heat Exchanger CoilCoil Aluminum plate fin / Copper tubeRows
2Fin pitch mm 1.3Face area m2 0.188
Fan & Fan MotorType Fan / Fan motor Cross-flow / AC
motorQ’ty … Dia. and length mm 1 … D92 / L634Fan motor model … Q’ty
IBH-884-066 … 1No. of poles … Rough measure rpm (Cool / Heat) 4 …
1,200 / 1,250Nominal output W 30Coil resistance (Ambient temp.
20°C) Ω BRN – WHT: 234
PNK (RED) – WHT: 209— : —
Safety devices Type Thermal fuseOperating temp. Open °C 130
Close —Run capacitor µF 1.2
VAC 440
Remote Control Unit RCS-3HVPSS4E
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8
Indoor Unit SAP–KRV123EH
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Control PCBPart No. CB-KRV123EH (POW-KRV93GJH)Controls
MicroprocessorControl circuit fuse 250V 3.15A
Flap Motor and Louver MotorType Stepping motorModel
MP24Z3-12VRating DC 12VCoil resistance (Ambient temp. 25°C) Ω Each
pair of terminals: 400 ± 7%
Heat Exchanger CoilCoil Aluminum plate fin / Copper tubeRows
2Fin pitch mm 1.3Face area m2 0.188
Fan & Fan MotorType Fan / Fan motor Cross-flow / AC
motorQ’ty … Dia. and length mm 1 … D92 / L634Fan motor model … Q’ty
IBH-884-066 … 1No. of poles … Rough measure rpm (Cool / Heat) 4 …
1,250 / 1,250Nominal output W 30Coil resistance (Ambient temp.
20°C) Ω BRN – WHT: 234
PNK (RED) – WHT: 209— : —
Safety devices Type Thermal fuseOperating temp. Open °C 130
Close —Run capacitor µF 1.2
VAC 440
Remote Control Unit RCS-3HVPSS4E
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9
2-2-2. Outdoor Unit
Outdoor Unit SAP–CRV93EH
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
CompressorType DC Rotary (Hermetic)Compressor model / Nominal
output G4C090LU1ER / 600WCompressor oil … Amount cc FV50S … 320Coil
resistance (Ambient temp. 20°C) Ω U – V: 0.81
V – W: 0.81W – U: 0.81
Safety devicesCT (Peak current cut-off control) YESCompressor
discharge temp. control YESOperation cut-off control in abnormal
ambient temp. —
Run capacitor µF —VAC —
Crankcase heater —
Fan & Fan MotorType … Fan / Fan motor Propeller / AC
motorQ’ty … Dia. mm 1 … 370Fan motor model … Q’ty IB-976-501 … 1No.
of poles … Rough measure rpm (Cool / Heat) 6 … 700 / 700Nominal
output W 20Coil resistance (Ambient temp. 20°C) Ω WHT – BRN:
213
RED (PNK) – WHT: 168— : —
Safety devices Type Thermal fuseOperating temp. Open °C 150
Close °C —Run capacitor on control PCB (A) µF 2.0
VAC 440
Heat Exchanger CoilCoil Aluminum plate fin / Copper tubeRows
2Fin pitch mm 1.4Face area m2 0.288
External Finish Acrylic baked-on enamel finish
Control PCB (A) / Control PCB (B)Part No. CB-CRV93EH
(POW-CRV93GJH)Controls MicroprocessorControl circuit fuse 250V,
20A
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10
Outdoor Unit SAP–CRV123EH
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Fan & Fan MotorType … Fan / Fan Motor Propeller / DC
MotorQ’ty … Dia. mm 1 … 370Fan motor model … Q’ty DAJ12-55J71-C …
1No. of poles … Rough measure rpm (Cool / Heat) 8 … 750 /
750Nominal output W 50Coil resistance (Ambient temp. 20°C) Ω —
——
Safety devices Type —Operating temp. Open °C —
Close °C —Run capacitor on control PCB (A) µF —
VAC —
Heat Exchanger CoilCoil Aluminum plate fin / Copper tubeRows
2Fin pitch mm 1.4Face area m2 0.367
External Finish Acrylic baked-on enamel finish
Control PCB (A) / Control PCB (B)Part No. CB-CRV123EH
(POW-CRV123GJH)Controls MicroprocessorControl circuit fuse 250V,
20A
CompressorType DC Rotary (Hermetic)Compressor model / Nominal
output G4C090LU1ER / 600WCompressor oil … Amount cc FV50S … 320Coil
resistance (Ambient temp. 20°C) Ω U – V: 0.81
V – W: 0.81W – U: 0.81
Safety devicesCT (Peak current cut-off control) YESCompressor
discharge temp. control YESOperation cut-off control in abnormal
ambient temp. —
Run capacitor µF —VAC —
Crankcase heater —
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11
2-3. Other Component Specifications
Indoor Unit SAP–KRV93EHSAP–KRV123EH
Outdoor Unit SAP–CRV93EHSAP–CRV123EH
00 10 20 30 40 50 60 70 80 90
40
60
80
100
120
140
160
180
200
20
10
1
2
3
4
5
6
7
8
9
10
15 20 25 30 35 40
• Indoor air temp sensor• Indoor heat exchanger sensor•
Compressor temp sensor
Res
ista
nce
(kΩ
)
Res
ista
nce
(kΩ
)
Temperature (°C) Temperature (°C)
• Outdoor air temp sensor• Outdoor heat exchanger sensor
40
35
30
25
20
15
10
5
0 –20 –15 –10 –5 0 5 10 15 20Temperature (°C)
Res
ista
nce
(kΩ
)
-
12
5 5815
825
285
567
189 3
45
24.5 56815
56 79.5
4040
450187.5
178.9Wide tube ø9.52(3/8")
Drain hose ø18Narrow tube ø6.35(1/4")
187.5
178.9
86.5
86.5
45
360
(ø65)
308
187.5187.5
92.5122.570
825450
4528
540
(ø65)
24.5
40196
46.5 27.4
70
3213
3.8
52 23
3. DIM
ENSIO
NAL D
ATAIndoor U
nit SAP-KRV93EH
SAP-KRV123EH
Unit: mm
-
13
Outdoor Unit SAP-CRV93EHSAP-CRV123EH
720 72
Wide tube service valveø9.52 (3/8")
2-ø12 holes
Narrow tube service valveø6.35 (1/4")
548
16 109
55
1552
91
265
91
290
316
538
275
AIR DISCHARGE
(12
clas
s on
ly)
AIR INTAKE
AIR
INTA
KE
12
ID:2
-ø23
.6
ID:ø1
8
Unit: mm
-
14
4. REFRIGERANT FLOW DIAGRAM4-1. Refrigerant Flow DiagramIndoor
Unit SAP-KRV93EH Outdoor Unit SAP-CRV93EH
SAP-CRV123EH SAP-CRV123EH
Com
pres
sor
4-wayvalve
AccumulatorWide tubeservicevalveWide tube
O.D.ø9.52 mm(3/8 ")
NarrowtubeservicevalveNarrow tube
O.D.ø6.35 mm(1/4")
Hea
t exc
hang
er
Hea
t exc
hang
er
Muffler
Capillary tube for split flow
Cooling cycle(Defrosting cycle)
Heating cycle
Indoor unit Outdoor unit
Electricexpansion
valveM
Modulator(12 class only)
Strainer Muffler(12 class only)
Insulation of Refrigerant Tubing
Because capillary tubing is used in the outdoor unit, both
thewide and narrow tubes of this air conditioner become cold.
Toprevent heat loss and wet floors due to dripping ofcondensation,
both tubes must be well insulated with a proper insulation
material. The thickness of the insulationshould be a min. 8 mm.
After a tube has been insulated,never try to bend it into a
narrowcurve because it can cause the tubeto break or crack.
IMPORTANT
Wide tube
Thickness:Min. 8 mm
Insulation
Narrow tube
Thickness:Min. 8 mm
IMPORTANT
CAUTION
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15
5. PERFORMANCE DATA5-1. Temperature ChartsIndoor Unit
SAP-KRV93EHOutdoor Unit SAP-CRV93EH
Overload prevention operates to protect the air conditioner when
outdoor ambient temperature becomesextremely high in heating mode.
(Refer to “9-2. Overload prevention during heating.”)● … Points of
rating condition
Black dots in above charts indicate the following rating
conditions.Cooling: Indoor air temperature 27°C D.B. / 19°C W.B.
Heating: Indoor air temperature 20°C D.B.
Outdoor air temperature 35°C D.B. / 24°C W.B. Outdoor air
temperature 7°C D.B. / 6°C W.B.
NOTE
■ Cooling Characteristics ■ Heating Characteristics
25 30 35 40
25 30 35 40
17
16
15
14
13
12
11
10
–5 0 5 10 15 20 25
3
2
8
9
6
7
4
5
–5 0 5 10 15 20 25
60
55
50
45
40
35
30
25
Outdoor inlet air D.B. temp.( C)
Outdoor inlet air D.B. temp.( C) Outdoor inlet air D.B. temp.(
C)
Outdoor inlet air D.B. temp.( C) Outdoor inlet air D.B. temp.(
C)
Ope
ratin
g cu
rren
t (A
)
Ope
ratin
g cu
rren
t (A
)
Indo
or d
isch
arge
air
tem
pera
ture
( C
)
Indo
or d
isch
arge
air
tem
pera
ture
( C
)
–5 0 5 10 15 20 25Outdoor inlet air D.B. temp.( C)
25 30 35 40
4
5
3
2
1.2(11.2)
1.3(12.2)
1.1(10.2)
1.0(9.2)
3.5(34.7)
3.0(29.6)
2.5(24.5)
2.0(19.4)
Low
pre
ssur
e at
wid
e tu
be s
ervi
ce v
alve
MP
a (k
gf/c
m2 G
)
Hig
h pr
essu
re a
t wid
e tu
be s
ervi
ce v
alve
MP
a (k
gf/c
m2 G
)
27°C
24°CIndoo
r Air Tem
p.30°C
24°C
27°CIndoor Ai
r Temp.30°
C
27°C
24°C
Indoor Air T
emp.30°C
20°C
17°C
Indoor A
ir Temp.2
3°C
20°C
17°C
Indoor Air Temp.23°C
20°C
17°C
Indoor Air Tem
p.23°C
-
16
Indoor Unit SAP-KRV123EHOutdoor Unit SAP-CRV123EH
Overload prevention operates to protect the air conditioner when
outdoor ambient temperature becomesextremely high in heating mode.
(Refer to “9-2. Overload prevention during heating.”)● … Points of
rating condition
Black dots in above charts indicate the following rating
conditions.Cooling: Indoor air temperature 27°C D.B. / 19°C W.B.
Heating: Indoor air temperature 20°C D.B.
Outdoor air temperature 35°C D.B. / 24°C W.B. Outdoor air
temperature 7°C D.B. / 6°C W.B.
NOTE
■ Cooling Characteristics ■ Heating Characteristics
Low
pre
ssur
e at
wid
e tu
be s
ervi
ce v
alve
MP
a (k
gf/c
m2 G
)
Hig
h pr
essu
re a
t wid
e tu
be s
ervi
ce v
alve
MP
a (k
gf/c
m2 G
)
Outdoor inlet air D.B. temp.( C) Outdoor inlet air D.B. temp.(
C)
Outdoor inlet air D.B. temp.( C) Outdoor inlet air D.B. temp.(
C)
Outdoor inlet air D.B. temp.( C) Outdoor inlet air D.B. temp.(
C)
Ope
ratin
g cu
rren
t (A
)
Ope
ratin
g cu
rren
t (A
)
Indo
or d
isch
arge
air
tem
pera
ture
( C
)
Indo
or d
isch
arge
air
tem
pera
ture
( C
)
25
1.3(12.2)
1.0(9.2)
1.1(10.2)
30 35 40
1.2(11.2)
Outdoor fan speed
HighLow
25
4
6
8
9
3
2
5
7
30 35 40
Outdoor fan speed
HighLow
25
8
10
12
14
16
18
30 35 40
Outdoor fan speed
HighLow
5 0 5 10 15 20 252.0
(19.4)
2.5(24.5)
3.0(29.6)
3.5(34.7)
5 0 5
4
6
8
9
3
2
5
7
10 15 20 25
5 0 5 10
30
6 25
35
40
45
50
55
20 60
15 20 25
27°C
24°C
Indoor Air T
emp.30°C
20°C
17°CIndo
or Air Te
mp.23°C
Indoor Air Temp.2
3°C
17°C20°C
Indoor Air Temp.30°C
24°C
27°C17°C
23°C
20°C
27°C
24°C
30°C
-
17
5-2. Air Throw Distance Charts
Horizontal distance (m)
Axi
s ai
r vel
ocity
(m/s
)Ve
rtic
al d
ista
nce
(m)
Room air temp. : 20°CFan speed : High
Heating
Horizontal distance (m)
Axi
s ai
r vel
ocity
(m/s
)Ve
rtic
al d
ista
nce
(m)
Room air temp. : 27°CFan speed : High
Cooling
1
2
3
4
1 2 3 4 5 6 7 8 9
: Flap angle 0° , : Axis air velocity 0° : Flap angle 30°, :
Axis air velocity 30°
1
2
3
4
1 2 3 4 5 6 7 8 9
: Flap angle 45° , : Axis air velocity 45° : Flap angle 60° , :
Axis air velocity 60°
Indoor Unit SAP–KRV93EH
-
18
Horizontal distance (m)
Axi
s ai
r vel
ocity
(m/s
)Ve
rtic
al d
ista
nce
(m)
Room air temp. : 20°CFan speed : High
Heating
Horizontal distance (m)
Axi
s ai
r vel
ocity
(m/s
)Ve
rtic
al d
ista
nce
(m)
Room air temp. : 27°CFan speed : High
Cooling
1
2
3
4
1 2 3 4 5 6 7 8 9
: Flap angle 0° , : Axis air velocity 0° : Flap angle 30°, :
Axis air velocity 30°
1
2
3
4
1 2 3 4 5 6 7 8 9
: Flap angle 45° , : Axis air velocity 45° : Flap angle 60° , :
Axis air velocity 60°
Indoor Unit SAP–KRV123EH
-
19
5-3. Operating Frequency Charts
0
1
2
3
4
5
0 10 20 30 40 50 60 70 80
Operating Freqency (Hz)
Coo
ling
Cap
acity
(kW
)
54
Min.
Center
Max.
0
200
400
600
800
1000
1200
0 10 20 30 40 50 60 70 80
Operating Freqency (Hz)
Pow
er In
put (
W)
54
Min.
Center
Max.
755
2.65
Indoor Unit SAP–KRV93EHOutdoor Unit SAP–CRV93EH
230V Single-phase 50Hz
NOTE
1) Rating conditions in cooling are:Indoor: 27°C D.B. / 19°C
W.B.Outdoor: 35°C D.B. / 24°C W.B.
2) Fan speed: High
■ Cooling
-
20
0
1
2
3
4
5
0 20 40 60 80 100 120
Operating Freqency (Hz)
Hea
ting
Cap
acity
(kW
)
3.6
Min.
Center
Max.
75
0
200
400
600
800
1000
1200
1400
0 20 40 60 80 100 120
Operating Freqency (Hz)
Pow
er In
put (
W) 995
Min.
Center
Max.
75
230V Single-phase 50Hz
NOTE
1) Rating conditions in heating are:Indoor: 20°C D.B.Outdoor:
7°C D.B. / 6°C W.B.
2) Fan speed: High
■ Heating
-
21
0
1
2
3
4
5
0 10 20 30 40 50 60 70 80 90
Operating Freqency (Hz)
Coo
ling
Cap
acity
(kW
) 3.5
Min.
CenterMax.
78
0
200
400
600
800
1000
1200
1400
0 10 20 30 40 50 60 70 80 90
Operating Freqency (Hz)
Pow
er In
put (
W)
1090
Min.
Center
Max.
78
Indoor Unit SAP–KRV123EHOutdoor Unit SAP–CRV123EH
230V Single-phase 50Hz
NOTE
1) Rating conditions in cooling are:Indoor: 27°C D.B. / 19°C
W.B.Outdoor: 35°C D.B. / 24°C W.B.
2) Fan speed: High
■ Cooling
-
22
0
1
2
3
4
5
6
0 20 40 60 80 100 120
Operating Freqency (Hz)
Hea
ting
Cap
acity
(kW
)
4.2
Min.
Center
Max.
81
0
200
400
600
800
1000
1200
1400
1600
0 20 40 60 80 100 120
Operating Freqency (Hz)
Pow
er In
put (
W)
1165
Min.
Center
Max.
81
230V Single-phase 50Hz
NOTE
1) Rating conditions in heating are:Indoor: 20°C D.B.Outdoor:
7°C D.B. / 6°C W.B.
2) Fan speed: High
■ Heating
-
23
6. ELECTRICAL DATA6-1. Electrical CharacteristicsIndoor Unit
SAP-KRV93EHOutdoor Unit SAP-CRV93EH
Indoor Unit Outdoor Unit Complete UnitFan Motor Fan Motor
Compressor
Performance at 230V Single-phase 50HzRating conditions Running
amp. A 0.17
Power input kW 0.0330.21
0.048
Rating conditions: Indoor air temperature: 27°C D.B. / 19°C
W.B.Outdoor air temperature: 35°C D.B.
Rating conditions: Indoor air temperature 20°C D.B. Outdoor air
temperature 7°C D.B. / 6°C W.B.
Heating
Cooling
3.480.674
3.860.755
Indoor Unit Outdoor Unit Complete UnitFan Motor Fan Motor
Compressor
Performance at 230V Single-phase 50HzRating conditions Running
amp. A 0.17
Power input kW 0.0350.21
0.0484.43
0.9124.81
0.995
Indoor Unit SAP-KRV123EHOutdoor Unit SAP-CRV123EH
Indoor Unit Outdoor Unit Complete UnitFan Motor Fan Motor
Compressor
Performance at 230V Single-phase 50HzRating conditions Running
amp. A 0.17
Power input kW 0.0350.14
0.030
Rating conditions: Indoor air temperature: 27°C D.B. / 19°C
W.B.Outdoor air temperature: 35°C D.B.
Rating conditions: Indoor air temperature: 20°C D.B. Outdoor air
temperature: 7°C D.B. / 6°C W.B.
Heating
Cooling
4.901.025
5.211.090
Indoor Unit Outdoor Unit Complete UnitFan Motor Fan Motor
Compressor
Performance at 230V Single-phase 50HzRating conditions Running
amp. A 0.17
Power input kW 0.0350.14
0.0305.17
1.1005.48
1.165
-
24
6-2. Electric Wiring D
iagrams
Indoor Unit
SAP-KRV93EH
Outdoor U
nitSAP-C
RV93EH
WA
RN
ING
To avoid electrical shock hazard, be sure todisconnect pow
er before checking, servicingand/or cleaning any electrical
parts.
55
44
33
22
11
44
33
22
11
22
11
66
55
44
33
22
11
66
W W W W W W
WWWWW
W
W
W
W
W W
321
33
22
11
33
22
11
11
22
RV
YE
LY
EL
BLK
BLK BL
KB
LKC
OM
PR
ES
SO
RTH
ER
MIS
TOR
FER
RIT
E C
OR
E
CO
ILTH
ER
MIS
TOR
OU
TDO
OR
THE
RM
ISTO
R
YL2
PC
ON
NE
CTO
R
OUTDOORRV1RV2
MV(BLK)
MAGNETIC COILREACTANCE
L2L1IN+IN–OUT–OUT+IN1IN2S1
CE
W
U
VT-RUN/TEST
FM FM H(WHT)
COIL/COMP(WHT)
BLK
BLK
BLU
BLU
BR
NW
HTBLU
BLU
BLU
YL3
PC
ON
NE
CTO
R
VL3
PC
ON
NE
CTO
R
BR
NW
HT
(PN
K)
RE
D
4-WAY VALVE
FM
FAN MOTOR
CA
PA
CIT
OR
W
BLU
WHT
RED
WH
TB
LU
(PN
K)
RE
D
CM
COMPRESSORMOTOR
GRN/YEL
S/U C/W
R/V
GRN/YEL
GR
N/Y
EL
BLK
WHT
RED
OR
G
BLK
WH
T
WH
T
OR
GR
ED
GR
YW
HT
YE
LB
LK
FER
RIT
EC
OR
E
TERMINALBASE
MV
RED
CONTROLLER
Outdoor Unit : SAP-CRV93EHIndoor Unit : SAP-KRV93EH
8FA-2-5257-145XX-0
YELBRNBLUPNKRED
BRN
BRN
TERMINAL BASE
PO
WE
RS
UP
PLY
BLU
EARTH
RED
GRYGRY
EVAPORATOR
54321
554433
BLKBLK
2 21 1
4 43 3
2211
CONTROLLERTHERMISTOR
(ROOM)
THERMISTOR(COIL)
8FA-2-5257-143XX-1
FLAPLAMP
9P(WHT)
IND
LA
MP
AS
SY
FAN5P(WHT)
FLAP5P(WHT)
POWERRELAY
RY01
HALL IC3P(WHT)
FMC1
FMC24P(WHT)
ROOM/COIL4P(WHT)
BLKREDWHT
(RED)PNK
22YEL
BLU
GRN/YEL
FAN MOTORCAPACITOR
FAN MOTOR
FLAP MOTOR
PNK
33
11
553311
321
54
WHTWHTWHT
5544332211
7766
5 5WHTWHT
WHT
4 43 3
RED2 21 1
7 76 6
9988WHT
WHT9 98 8
BLK(ORG)BLK(ORG)
1234
BRN
FM
HAJEM-A
1
2
4
L
N
4 AC IN SI1 SI
3
GR
N/Y
EL
GRN/YEL
GRN/YEL
1
2
4
Meaning of Abbre viation s ABB REV. MEANING
1 BLK BLACK
2 BLU BLUE
3 BRN BROWN
4 GRN/YEL GREEN/YELLOW
5 GRY GREY
6 ORG ORANGE
7 PNK PINK
8 RED RED
9 VLT VIOLET
10 WHT WHITE
11 YEL YELLOW
-
25
Indoor Unit
SAP-KRV123EH
Outdoor U
nitSAP-C
RV123EH
WA
RN
ING
To avoid electrical shock hazard, be sure todisconnect pow
er before checking, servicingand/or cleaning any electrical
parts.
55
44
33
22
11
44
33
22
11
22
11
66
55
44
33
22
11
66
W W W W W W
WW
W
W
W
W
W W
321
33
22
11
11
22
RV
YE
LY
EL
BLK
BLK BL
KB
LKC
OM
PR
ES
SO
RTH
ER
MIS
TOR
FER
RIT
E C
OR
E
CO
ILTH
ER
MIS
TOR
OU
TDO
OR
THE
RM
ISTO
R
YL2
PC
ON
NE
CTO
R
OUTDOORRV1RV2
MV(BLK)
MAGNETIC COILREACTANCE
L2L1IN+IN–OUT–OUT+IN1IN2S1
E
W
U
VT-RUN/TEST
(WHT)COIL/COMP
(WHT)
BLK
BLK
BLU
BLU
BLU
BLU
VL3
PC
ON
NE
CTO
R
4-WAY VALVE
W
BLU
WHT
RED
WH
TB
LU
(PN
K)
RE
D
CM
COMPRESSORMOTOR
GRN/YEL
S/U C/W
R/V
GRN/YEL
GR
N/Y
EL
BLK
WHT
RED
OR
G
BLK
WH
T
WH
T
OR
GR
ED
GR
YW
HT
YE
LB
LK
FER
RIT
EC
OR
E
TERMINALBASE
MV
8FA-2-5257-146XX-0
YELBRNBLUPNKRED
BRN
BRN
TERMINAL BASE
PO
WE
RS
UP
PLY
BLU
EARTH
RED
GRYGRY
EVAPORATOR
54321
554433
BLKBLK
2 21 1
4 43 3
2211
CONTROLLERTHERMISTOR
(ROOM)
THERMISTOR(COIL)
8FA-2-5257-143XX-1
FLAPLAMP
9P(WHT)
IND
LA
MP
AS
SY
FAN5P(WHT)
FLAP5P(WHT)
POWERRELAY
RY01
HALL IC3P(WHT)
FMC1
FMC24P(WHT)
ROOM/COIL4P(WHT)
BLKREDWHT
(RED)PNK
22YEL
BLU
GRN/YEL
FAN MOTORCAPACITOR
FAN MOTOR
FLAP MOTOR
PNK
33
11
553311
321
54
WHTWHTWHT
5544332211
7766
5 5WHTWHT
WHT
4 43 3
RED2 21 1
7 76 6
9988WHT
WHT9 98 8
BLK(ORG)BLK(ORG)
1234
BRN
FM
HAJEM-A
1
2
4
L
N
4 AC IN SI1 SI
3
GR
N/Y
EL
GRN/YEL
GRN/YEL
1
2
4
66
77
55
44
33
22
11
DCFM(WHT)
WH
T
RE
DB
LU YE
L
BLK
FM
FAN MOTOR
GRN/YEL
CONTROLLER
Outdoor Unit : SAP-CRV123EHIndoor Unit : SAP-KRV123EH
Meaning of Abbre viation s ABBREV. MEANING
1 BLK BLACK
2 BLU BLUE
3 BRN BROWN
4 GRN/YEL GREEN/YELLOW
5 GRY GREY
6 ORG ORANGE
7 PNK PINK
8 RED RED
9 VLT VIOLET
10 WHT WHITE
11 YEL YELLOW
-
26
7. INSTALLATION INSTRUCTIONS7-1. Installation Site
Selection7-1-1. Indoor Unit
AVOID:● direct sunlight.
● nearby heat sources that may affect performance ofthe
unit.
● areas where leakage of flammable gas may beexpected.
● places where large amounts of oil mist exist.
DO:● select an appropriate position from which every cor-
ner of the room can be uniformly cooled. (High on awall is
best.)
● select a location that will hold the weight of the unit.
● select a location where tubing and drain hose havethe shortest
run to the outside. (Fig. 1)
● allow room for operation and maintenance as well
asunrestricted air flow around the unit. (Fig. 2)
● install the unit within the maximum elevation differ-ence (H)
above or below the outdoor unit and withina total tubing length (L)
from the outdoor unit asdetailed in Table 1 and Fig. 3.
● Install the indoor unit more than 1 meter away from anyantenna
or power lines or connecting wires used fortelevision, radio,
telephone, security system, or inter-com. Electrical noise from any
of these sources mayaffect operation.
Table 1
5 cmmin.
5 cmmin.
15 cm min.
Front View
Fig. 1
INDOORUNIT
Tubing length (L)
OUTDOORUNIT
Elevationdifference (H)
Fig. 2
WARNING To prevent abnormal heatgeneration and the possibilityof
fire, do not place obstacles,enclosures and grilles in frontof or
surrounding the air con-ditioner in a way that mayblock air
flow.
Indoor unit
Floor level
Wall
Minimum height from floor level
1.5 m
Fig. 3
For stable operation ofthe air conditioner, do notinstall
wall-mounted typeindoor units less than 1.5 m from floor level.
CAUTION
Max. Allowable Tubing Limit of Tubing Limit of Elevation
Required Amount of Model Length at Shipment Length (L) Difference
(H) Additional Refrigerant
(m) (m) (m) (g/m) *
KRV93 / 123 7.5 15 7 15
* If total tubing length becomes 7.5 to 15 m (max.), charge
additional refrigerant (R410A) by 15 g/m.No additional compressor
oil is necessary.
-
27
7-1-2. Outdoor UnitAVOID:● heat sources, exhaust fans, etc.
(Fig. 4)● damp, humid or uneven locations.
DO:● choose a place as cool as possible.● choose a place that is
well ventilated.● allow enough room around the unit for air
intake/
exhaust and possible maintenance. (Fig. 5a)● provide a solid
base (level concrete pad, concrete
block, 10 × 40 cm beams or equal), a minimum of10 cm above
ground level to reduce humidity andprotect the unit against
possible water damageand decreased service life. (Fig. 5a)
● Install cushion rubber under unit’s feet to reducevibration
and noise. (Fig. 5b)
● use lug bolts or equal to bolt down unit, reducingvibration
and noise.
● Install in a location where no antenna of a televi-sion or
radio exists within 3 meters.
Outdoor unit
Hot airHeat source
Exhaust fanNO
Fig. 4
Air intake
Concreteor equal
About 10 cm
Min. 10 cm
Anchor bolts(4 pcs.)
About 40 cm
Fig. 5a
Cushion rubber
Fig. 5b
Air intake Min. 10 cm
Air dischargeMin.5 cm Min.40 cm
ValvesideMin. 25 cm
Min.2 m
Min.2 m
Ground
Obs
tacl
e
Obstacle above
Air
disc
harg
e
-
28
7-2. Recommended Wire Length and DiameterRegulations on wiring
diameter differ from locality to locality. For field wiring
requirements, please refer to yourlocal electrical codes. Carefully
observe these regulations when carrying out the installation.Table
2 lists recommended wire lengths and diameters for power supply
systems.
Refer to the wiring system diagram (Fig. 6) for the meaning of
“A”, “B” and “C” in Table 2.
Table 2
NOTE
INDOOR UNIT OUTDOOR UNIT
TERMINALTERMINAL (B)
(A)
(C)
GROUNDING LINE
Power supply:Single-phase 220 – 240VAC 50Hz
1
4
2
1
4
2
L
N
Fig. 6
CAUTION Be sure to connect the powersupply line to the indoor
unitas shown in the wiring dia-gram. The outdoor unit drawsits
power from the indoor unit.
WIRING SYSTEM DIAGRAMWARNING ● Be sure to comply with local
codes on running the wirefrom the indoor unit to theoutdoor unit
(size of wireand wiring method, etc.).
● Each wire must be firmlyconnected.
● No wire should be allowedto touch refrigerant tubing,the
compressor, or anymoving part.
● To avoid the risk of electrical shock, each airconditioner
unit must be grounded.
● For the installation of a grounding device,please observe
local electrical codes.
● Grounding is necessary, especially for unitsusing inverter
circuits, in order to releasecharged electricity and electrical
noise causedby high tension. Otherwise, electrical shockmay
occur.
● Place a dedicated ground more than 2 metersaway from other
grounds and do not have itshared with other electric
appliances.
WARNING
Cross-Sectional (A)+(B) (A) Power Supply Wiring Length (m) (C)
ControlFuse or Circuit Area (mm 2) (B) Power Line Length (m) Line
Length (m)
Model 2 3.5 0.75Breaker Capacity
CRV93 60 100 16010A
CRV123 60 100 160
-
29
7-3-1. Mounting on a Wall
Before mounting theremote control unit, pressthe ON/OFF
operationbutton at the mountinglocation to make sure thatthe air
conditioner oper-ates from that location.The indoor unit shouldmake
a beeping sound toindicate that it hasreceived the signal.
7-3. Remote Control Unit Installation PositionThe remote control
unit can be operated from either a non-fixed position or a
wall-mounted position.
To ensure that the air conditioner operates correctly, do not
install the remote control unit in the following places:
● In direct sunlight
● Behind a curtain or other place where it is covered
● More than 8 m away from the air conditioner
● In the path of the air conditioner’s airstream
● Where it may become extremely hot or cold
● Where it may be subject to electrical or magnetic
interference
● Where there is an obstacle between the remote control unit and
the air conditioner (since a check signal issent from the remote
control unit every 5 minutes)
Hole
Remote control unit mount
Mounting screws 4 × 16 (included)
Rear side
Press
Set in place To prevent loss of the remote control
unit, you can connect the remote control unit to the mount by
passing a string through the remote control unit and attachment
hole.
To take out the remote control unit, pull it forward.
Fig. 7
-
30
7-4. How to Test Run the Air ConditionerAfter turning on power
to the air conditioner, use the remotecontroller and follow the
steps below to conduct the test run.
(1) Set the remote controller in Test Run mode. (Fig. 8a)
a) Press and hold the QUIET button.
b) Then press and hold the 1HR TIMER button.
c) At the same time, press the ACL (reset) button once.Use a
pointed object such as the tip of a pen to pressthe ACL button.
• After a few seconds, “ ” appears and “oP-1” blinks inthe
remote controller display area. (Fig. 8b)
d) Release the 1HR TIMER button.
e) Release the QUIET button.
(2) Start Cooling mode test run by pressing the ON/OFFoperation
button of the remote controller. (Fig. 8a)
• This starts the fan producing uncooled forced air withthe 3
indicator lamps (OPERATION lamp, TIMER lampand QUIET lamp) on the
main unit blinking. (Fig. 8c)
• After 3 minutes, the system shifts into cooling opera-tion,
and cool air will start to be felt. Cool mode testrun is unaffected
by the room temperature.
(3) Press the ON/OFF operation button of the remote con-troller
again to stop the test run. (Fig. 8a)
(4) Finally press the ACL (reset) button of the remote
con-troller to release it from Test Run mode to return to nor-mal
mode. (Fig. 8a)
• “ ” and “oP-1” will disappear from the remote con-troller
display area.
After the test run is completed, be sure to press the ACL(reset)
button to return to normal mode. The air conditionerwill not
operate correctly if this is not done.
IMPORTANT
Fig. 8a
Fig. 8b
Fig. 8c
1HR.TIMER
ON/OFF operation
ACL(Reset)
QUIET
button
button
buttonbutton
OPERATION lampTIMER lampQUIET lamp
-
31
7-5. Remove the Grille to Install theIndoor Unit
Basically, these models can be installed and wiredwithout
removing the grille. If access to any internalpart is needed,
follow the steps as given below.
How to remove the grille
(1) Grasp both ends of the air intake grille, and removeit by
opening towards the front and pulling towardsyou. (Fig. 9a)
(2) Remove the 2 screws. (Fig. 9b)
(3) Remove the screw on the right side cover plateand open the
cover. (Fig. 10a)
(4) Take out the thermistor from the grille. (Fig. 10b)
(5) Pull the lower part of the grille toward you toremove. (Fig.
11a)
(6) Use a standard screwdriver to push on the tabs toremove the
grille.
How to replace the grille
(1) Reinstall the grille into the lower part while aligningits
tabs on the upper part. (Fig. 11b) Insert the tabsin the slots and
push the lower part of the grilleback into position.
(2) Make sure that the grille and frame are firmly
fittedtogether by engaging the tabs.
(3) Attach the thermistor on the grille. (Fig. 10a)
(4) Close the cover and replace the screw. (Fig. 10a)
(5) Affix the grille with the 2 previously removedscrews. (Fig.
9b)
(6) Install the air intake grille.
(a) Allow the edge of the air intake grille to slide intothe top
of the indoor unit, and then insert it all theway inside. (Fig.
12a)
(b) Press the bottom right and left corners of the airintake
grille to attach it to the indoor unit. (Fig. 12b)
Screw cover
Air intake grille Grille
Fig. 9a
Fig. 9b
CoverThermistor
Fig. 10a
Thermistor
Fig. 10b
Fig. 11a
Grille
Frame
Tab
Tab
**
Fig. 11b
**
Fig. 12b Fig. 12a
Pin
Groove
CAUTION Be sure to wear work gloves duringinstallation to avoid
being cut by thesharp aluminum fins of the heatexchanger.
-
32
8. MAINTENANCE8-1. Address Setting of the Remote
Control UnitThe address can be set in order to prevent
interfer-ence between remote controllers when two Sanyoindoor units
are installed near each other. The addressis normally set to “A.”
To set a different address, it isnecessary to change the address on
the secondremote controller.
Once changed, you cannot restore the originaladdress setting of
the air conditioner.
(1) Switch on the power source.
(2) Break the address-setting tab marked “A” on thesecond remote
controller to change the address(Fig. 13). When the tab is removed,
the address isautomatically set to B (Fig. 14).
(3) Press and hold the remote controller QUIET but-ton and 1 HR
TIMER button. At the same time,press the ACL (reset) button. Use a
thin objectsuch as the tip of a pen to press the ACL button.When
this has been done, “oP-1” (test run)appears, blinking, in the
remote controller clockdisplay area.
(4) Each time the 1 HR TIMER button is pressed, thedisplay
changes as shown below. Press this but-ton 2 times to change the
display to “oP-7”(address setting). (Fig. 15)
(5) “oP-7” has now been selected for address setting.
(6) Press the ON/OFF operation button on the remotecontroller.
(Fig. 15) Check that the “beep” signal-received sound is heard from
the second indoorunit (approximately 5 times). The sound you hearis
the signal that the remote controller addresshas been changed.
(7) Finally press the remote controller ACL (reset)button to
cancel the blinking “oP-7” display. (Fig. 15)
Changing of the second remote controller address isnow
completed.
Test run mode
Self-diagnostic mode
Address setting mode
NOTE
Fig. 13
Fig. 14
Fig. 15
Tab
ACL button
ON•/OFF•
1HR.
UIET
MODE
TEMP.
TIMER
CANCEL
SENSORADR ACL
24H12HF
CLOCK
NIGHT SETBACKFAN SPEED
HIGH POWERFLAP
AIR CONDITIONER
1HR.TIMER
ON/OFF operation
ACL(Reset)
QUIETbutton
button
button
button
-
33
8-2. Disconnecting and Connecting Positive Connector for Outdoor
Unit
One of the two types of connectors illustrated at left is used.
Theirbasic structure is the same for each.
How to Disconnect
Hold the resin connector cover, and pull the connector off.You
cannot disconnect the connector by pulling the wire sinceit is
locked inside. Always hold the cover to disconnect.
(Seeillustration at left.) For the connector without the resin
cover,push the lock in the direction of “2” while pulling it
off.
How to Connect
In order to connect, hold the resin cover of the connector
andpush it in. Confirm the click sound for the inside lock.
Pull the cover upward
When the cover is pulled upward, the lock is released with the
sequence of 1 and 2.
-
34
9. FUNCTIONS9-1. Operation Functions
■ Emergency operation ■ SENSOR DRY
■ AUTO cooling/heating operation
● Selecting the operation mode
During DRY operation, the system adjusts the room temperature
and fan speed according to the conditions in the room, in order to
maintain a comfortable room environment.
SENSOR DRY operation• DRY operation is as shown in the figure
below.
■ PAM-α control• In order to further improve inverter
performance, control is
switched between PWM control at low operation speeds, and PAM
control at high operation speeds, making the most effective use of
power.
The compressor operation frequency varies.The indoor fan
operates with 1/f fluctuation.
The compressor operates at a low operating frequency.The indoor
fan operates with 1/f fluctuation.
• Monitoring operation takes place when the room temperature is
below 15°C, or more than 3°C below the set temperature.
• When the monitoring range is entered, the compressor stops,
and the indoor fan operates with 1/f fluctuation.
DRY A
DRY B
Monitor
Conditions are monitored at all times when the room temperature
is below 15°C.
Load
COOL zone
A zone
B zone
Emergency operation is available when the remote controller
malfunctions, has been lost, or otherwise cannot be used.
• The set temperature is 2°C below the detected room temperature
in the case of cooling operation, and 2°C above the room
temperature in the case of heating operation. The flap and fan
speed settings are AUTO.
(GREEN) (RED) (Lamp Off)COOL HEAT STOP
• When AUTO mode is selected, the microprocessor calculates the
difference between the set temperature and the room temperature,
and automatically switches to Cooling or Heating mode.
• As shown by the example in the figure below, with AUTO
cooling/heating operation, the mode changes between Heating and
Cooling mode according to changes in the relationship between the
current room temperature and the set temperature.
Room temp. ≥ Set temp. COOLRoom temp. ≤ Set temp. HEAT
23
Zone A
Zone B
Zone CZone C
Zone B
Zone A
OFF OFFCompressor
Operation mode
Room temp.
HeatingCooling Cooling
ON ON ON
More than1 hour
Within1 hour
Set temp.
ExampleExample of operation in AUTO mode with the set room
temperature at 23°C.
To operate the system, press the OPERATION button, which is also
used as the receiver, below the unit display. Each time this button
is pressed, the OPERATION lamp changes color to indicate the type
of operation. Select the desired type of operation.
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35
■ HIGH POWER
This function acts to raise the power but keeps the AC system in
the same operating mode.This function is set with the HIGH POWER
button on the remote controller.(It can be set regardless of the
temperature and fan speed settings.)
● HIGH POWER operation from remote controllerThe unit operates
at maximum output for 30 minutes, regardless of the desired
temperature.The fan speed is 1 step above “High.”
■ Lamp colorsOPERATION lamp
■ NIGHT SETBACK
NOTE• When HIGH POWER operation ends, the unit operates at
low
Hz for 5 minutes, regardless of the thermostat OFF conditions.•
When in DRY mode, operation is in the cooling zone.
■ Timer backup
• Operation stops if there are no operator controls for 25 hours
or longer after unit operation switched from OFF to ON by use of ON
timer operation.
Frequency
MAX
0
Start End
Time30 min. 5 min.
• When NIGHT SETBACK operation is set, the temperature and fan
speed settings will be adjusted automatically to allow comfortable
sleep.
• When NIGHT SETBACK operation is set, “ mark” appears on the
remote controller. The main unit display lamp also becomes
dimmer.
● COOL and DRY modes• The indoor unit fan speed is automatically
lowered for quiet
operation.• The temperature setting is raised by 1°C 30 minutes
after
NIGHT SETBACK operation is set. This repeats again after another
30 minutes have passed to gradually raise the temperature.
● HEAT mode• The indoor unit and outdoor unit fan speeds are
automatically lowered for quiet operation.• The temperature
setting is lowered by 2°C 30 minutes after
NIGHT SETBACK operation is set. This repeats again after another
30 minutes have passed to gradually lower the temperature.
TIMER lamp GreenQUIET lamp Green
HEAT operation RedDRY operation OrangeCOOL operation Green
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36
■ Overload prevention during heating
9-2. Protective Functions
During HEAT operation, the temperature of the indoor heat
exchanger is used to control the frequency and lessen the load on
the compressor before the protective device is activated.
■ Cold-air prevention during heating
■ Compressor discharge temperature control
During heating, the fan speed is set to “LL” (very low) or
stopped.As the temperature of the indoor heat exchanger rises, the
fan speed is changed to the set speed.
■ Freeze preventionDuring COOL or DRY operation, freezing is
detected and operation is stopped when the temperature of the
indoor heat exchanger matches the conditions below.1
Freeze-prevention operation is engaged when the
temperature of the indoor heat exchanger is below 6°C.2 Restart
after freeze-prevention operation occurs when the
temperature of the indoor heat exchanger reaches 8°C or
above.
a Area: Automatic capacity controlb When Point A has been
exceeded, the operation frequency is
reduced by a certain proportion.c Area: Frequency increase is
prohibited.d At Point B and below, overload prevention is ended
and
control is the same as in the a area.
a Area: Automatic capacity controlb When the temperature drops
below Point A, the operation
frequency is reduced by a certain proportion.c Area: Frequency
increase is prohibited.d When the temperature reaches Point C or
above, freezing
prevention is ended and control is the same as in the a
area.
* When the temperature drops to below 2°C (continuously for 2
minutes or longer), the compressor stops.Once the freeze condition
is detected, the air conditioner will work less than the maximum
frequency until it is turned off.
Approx.53 Normal operation
At start of operation
A High
LL
Stopped
A
*
B
C
B
Indoor heat exchangerA. Control startB. Control end
Set fan speed
25 30 Approx. 40
a b c d
a b c d
Indo
or h
eat e
xcha
nger
tem
pera
ture
(°C)
Indoor heat exchangertemperature (°C)
Indo
or h
eat e
xcha
nger
tem
pera
ture
(°C)
Approx.47
2
6
8
NOTE• The fan speed is forcibly changed to “LL” beginning 30
seconds
after the thermostat turns OFF.• Normal operation refers to
operation when the room
temperature has approached the set temperature.• When HEAT
operation starts, the indoor fan is stopped until the
temperature of the indoor heat exchanger reaches 20°C or higher,
or until the room temperature reaches 15°C or higher.
This function controls the operation frequency to prevent the
compressor discharge temperature from rising more than a specified
temperature.
a Area: Automatic capacity control.b When the temperature rises
above Point A, the operation
frequency is reduced at a specified rate.c Area: Further
frequency increase is prohibited.d When the temperature falls below
Point B, prevention of a rise
in frequency is released and the air conditioner operates as in
a area.
* The compressor will stop if the temperature of the compressor
discharge exceeds 120°C due to shortage of gas or other reason.
Approx.101
A
B
a b c d
Compressor discharge temperature (°C)
Approx.94
-
37
Heating operation
Frost sensing
Reverse-cycle defrosting operation
Defrosting Sequence
Releasing of defrosting
●
●
•
•
Outdoor fan ON4-way valve ON
●
●
Outdoor heating exchanger temp. is over 14°C.Defrosting
operation lasts 12 minutes (maximum).2 minutes after it is stopped,
compressor is ON.4-way valve is ON. Outdoor fan is ON.
If the air conditioner is turned off during the defrosting
cycle, it will continue defrosting and turn itself off after
defrosting is completed.
●
●
●
●
●
Compressor ➞ 1 minute after it is stopped, compressor is ON.
Outdoor fan ➞ OFF Indoor fan ➞ OFF4-way valve ➞ OFFOperation lamp
➞
● Reverse-Cycle Defrosting
NOTE
■ Defrost detection and release
• This function prevents the circuit breaker or fuse from
operating to open the circuit. This function works when electrical
current has increased due to an increase in the cooling / heating
load, or to a decrease in the power supply voltage. In these cases,
operation frequency is reduced or operation is interrupted
auto-matically to control the electrical current for operation.
• When the cause of the increase in electrical current is
rectified, the system will resume operation in the original
mode.
Electrical current setting for COOL operation is used during
DEFROST operation.
Cooling • Dry Heating
Peak current cut-off trips 12.0Hz down 8.5 8.5
NOTE
(A)SAP-KRV93, KRV123
■ CT (Peak current cut-off control)
Repeatedly switches between red and orange illumination.
Defrost detection occurs in either of the following cases:
The temperature of the heat exchanger remains at or below the L2
line for 120 minutes after the start of HEAT operation.
Outdoor heat exchanger temp.
Ambient temp.0
L1L2
Frosting area
The temperature of the heat exchanger remains at or below the L1
line for 3 minutes after the start of HEAT operation.
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38
10. TROUBLESHOOTING
■ Precautions before performing inspection or repair
NOTE
Executing self-diagnostics
● After checking the self-diagnostics monitor, turn the power
OFF before starting inspection or repair.
● High-capacity electrolytic capacitors are used inside the
outdoor unit controller (inverter). They retain an electrical
charge (charging voltage DC 310 V) even after the power is turned
OFF, and some time is required for the charge to dissipate. Be
careful not to touch any electrified parts before the controller
LED (red) turns OFF.If the outdoor controller is normal,
approximately 30 seconds will be required for the charge to
dissipate. However, allow at least 5 minutes for the charge to
dissipate if there is thought to be any trouble with the outdoor
controller.
1: If the operation lamp blinks every 0.5 seconds immediately
when the power is turned ON, there is an external ROM (OTP data)
failure on the indoor circuit board, or a ROM socket insertion
problem, or the ROM has not been installed.
2: The failure mode is stored in memory even when the power is
not ON. Follow the procedure below to perform diagnostics.
■ Method of self-diagnosticsFollow the procedure below to
perform detailed trouble diagnostics.
ON EI/OFF E
1HR.
UIET
MODE
TEMP.
TIMER
CANCEL
SENSORADR ACL
24H12HF
CLOCK
NIGHT SETBACKFAN SPEED
HIGH POWERFLAP
AIR CONDITIONER
1HR.TIMERbutton
ON/OFF operationbutton
ACL(Reset)button
QUIETbutton
< Clock display >
Test run mode
Self-diagnostics mode
Step 1: Press and hold the remote controller QUIET button and 1
HR TIMER button. At the same time, press the ACL (reset) button.
Use a pointed object such as the tip of a pen to press the ACL
button.When this has been done, “oP-1” (test run) appears,
blinking, in the remote controller clock display area.
Step 2: Next, press the 1 HR TIMER button once to change the
display from “oP-1” to “oP-3” (self-diagnostics). (The display
continues to blink.)
Step 3: Finally press the ON/OFF button to engage
self-diagnostics mode.
• The self-diagnostics function utilizes the 3 indicator lamps
on the main unit, in combinations of ON lamps, blinking lamps, and
OFF lamps, to report the existence of sensor trouble or a
protective operation. (The lamps blink or remain ON for 5 seconds,
then turn OFF for 2 seconds.) Self-diagnostics is completed when
the buzzer sounds 3 short beeps.
• A maximum of 3 self-diagnostics reports are displayed, for 5
seconds each, beginning with the most recent report. Following this
display the lamps turn OFF. In order to view the self-diagnostics
results again, press the ON/OFF button again.
• The 3 lamps remain OFF if no trouble has occurred.
After self-diagnostics is completed, be sure to press the ACL
(reset) button to return to normal mode. The air conditioner will
not operate if this is not done.
After turning on power to the air conditioner, use the remote
controller and follow the steps below to execute
self-diagnostics.
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39
Self-diagnostics Lamps
Indication on indoor unit .... OFFTimer Operation Code
Diagnostics item Diagnostics contents
S01 Room temperature sensor failure 1 Sensor open circuit or
short circuit2 Contact failure at connector or open circuit at
terminal crimping location (short-circuit
detection only for the humidity sensor)3 Indoor/outdoor circuit
board failure
1 Sensor open circuit or short circuit2 Contact failure at
connector or open circuit at terminal crimping location3 Outdoor
circuit board failure
1 External ROM data failure 2 Outdoor circuit board failure
1 Outdoor circuit board failure 2 Outdoor power supply voltage
failure
1 4-way valve failure (heat pump model only)2 Outdoor circuit
board failure
1 Service valve not opened. 2 Shortage of refrigerant
1 Open phase 2 Outdoor circuit board failure
1 Mis-wiring 2 AC power failure 3 Blown fuse 4 Power relay
failure 5 Indoor or outdoor circuit board failure
1 Electric expansion valve failure 2 Capillaries choked 3
Shortage of refrigerant4 Continuous overload operation 5 Outdoor
fan does not rotate 6 Outdoor circuit board failure
1 Mis-wiring 2 Blown fuse 3 Power relay failure 4 Open phase 5
Outdoor circuit board failure 6 Compressor failure
1 Instantaneous power outage 2 HIC or power transistor failure 3
Outdoor circuit board failure
1 Fan motor failure 2 Contact failure at connector 3 Outdoor
circuit board failure
1 Indoor fan system failure 2 Shortage of refrigerant 3
Low-temperature operation
1 Fan motor failure 2 Contact failure at connector 3 Indoor
circuit board failure
1 HIC or power Tr failure 2 Outdoor fan does not turn. 3
Instantaneous power outage 4 Service valve not opened. 5 Outdoor
fan blocked. 6 Continuous overload operation 7 Compressor failure 8
Outdoor circuit board failure
Indoor heat exchanger sensor failure
Humidity sensor failure
Compressor temperature sensor failure
Outdoor heat exchanger sensor failure
Outdoor air temperature sensor failure
Indoor/outdoor communications failure (serial
communications)
Outdoor unit external ROM (OTP data) failure
Peak current cut-off
• HIC circuit failure• Power Tr (transistor) circuit failure
• PAM circuit failure• Active circuit failure
• Outdoor system communications failure• Outdoor high-pressure
SW• OLR operation• Outdoor power supply open phase• Outdoor coil
freezing
Compressor discharge overheat prevention activated.
Indoor fan operating failure
No-refrigerant protection
DC compressor drive circuit failure
Outdoor fan operating failure
Freeze-prevention operation activated.
• 4-way valve switching failure• Indoor zero-cross failure
Outdoor electrical current detection failure Outdoor circuit
board failure
S02
S03
S04
S05
S06
S07
E01
E02
E03
E04
E05
E06
E07
E08
E09
E10
E11
E12
E13
.... Blinking .... ON (Illuminated)Quiet
(3) (2) (1)
Since the indications cover various units, corresponding parts
listed below may not bepresent in some models.
OPERATION
OPERATION
TIMERQUIET
(1) OPERATION lamp(2) TIMER lamp(3) QUIET lamp
Self-diagnostics lamps
-
40
■ If self-diagnostics function fails to operate
■ Checking the indoor unit
■ Checking the outdoor unit
■ Checking serial communications
Check the indoor unit.
Is the fuse blown?
ControlNo. Check items (unit operation)
Replace the controller.Replace the circuitboard or the fuse.
• No indicators illuminate and the indoor fan does not
rotate.
• Check the power voltage.
Use the remote controller to operate the unit in “TEST run”
mode. To determine whether the mode is currently in “TEST run”
mode, check the 3 indicator lamps on the unit. If all 3 are
blinking, the current mode is “TEST run.”
● If there are no problems with the above, then check the
outdoor unit.● For the “Test run” procedure, refer to 7.4 “How to
Test Run the Air Conditioner.”
1 • The rated voltage must be present between inter-unit cables
1 and 2.• Connect a 5 kΩ resistor between inter-unit cables 2 and
4. When the
voltage at both ends is measured, approximately 12–15 V DC must
be output and the multimeter pointer must bounce once every 8
seconds.Or instead of measuring the voltage, you can insert an LED
jig and check that the LED flickers once every 8 seconds.
ControlNo. Check items (unit operation)
Short-circuit terminals 2 and 4 on the indoor unit terminal
base.
Initial self-diagnostics Probable location of malfunction
Short-circuit terminals 2 and 4 on the indoor unit terminal
base.
Apply the rated voltage between outdoor unit terminals 1 and
2.
● If there are no problems with the above, then check the indoor
unit.
● Turn the power OFF before performing short circuiting
procedures.● Refer to the previous pages when performing system
self-diagnostics.● So that the check can be made quickly,
indicators blink at first communication after power ON.● Before
performing the above checks, perform “TEST run” operation, and
check that the rated voltage is output to terminals 1 and 2 on
the outdoor unit. If it is not output, there is a failure
related to the indoor unit power.
1 • The control panel LED (red) must illuminate.
Short-circuit the outdoor unit COM terminal to the T-RUN
terminal.
2 • The compressor, fan motor, and 4-way valve must all turn
ON.
Normal
Blown
→ Control 1
No change Indoor unit circuit board failure
Outdoor unit circuit board failure
Failure (open circuit, contact failure, etc.) in the inter-unit
wiring
Outdoor unit circuit board failure
Change: (1) and (3) illuminate, and (2) blinks.
(1) illuminates
Change: (1) and (3) illuminate, and (3) blinks.
Change: (1) and (3) illuminate, and (2) blinks.
Change: (1) illuminates
(1) and (3) illuminate,and blinks.
→ Control 2
● Using the TEST/T-RUN terminals
T-RUN : Test run (compressor and fan motor turn ON).TEST/MV :
Compresses time to 1/60th (accelerates
operation by 60 times faster than normal).
TEST/T-RUN terminals
(TEST)/MV T-RUN COM
-
41
.....Applied for only SAP-CRV123 outdoor unit● This outdoor DC
fan motor contains an internal control PCB. Therefore, it is not
possible to measure the coil
resistance, and the following procedure should be used to check
the motor.● To perform diagnosis, follow the instructions in
“Checking the Outdoor Unit” on the previous page and set the
outdoor unit to Test Run mode (compressor ON, outdoor fan motor
ON).Important: (A) Turn OFF the power before connecting or
disconnecting the motor connectors.
(B) When performing voltage measurement at the outdoor
controller connector for (3) in the tablebelow, the DC motor will
trip and voltage output will stop approximately 10 seconds
afteroperation is started. For this reason, to measure the voltage
again, first turn OFF the outdoorunit power, then follow the
instructions in “Checking the Outdoor Unit” and again set the
unitto Test Run mode.
[Trouble symptom 1] The fan does not stop when the outdoor unit
stops. → Outdoor unit controller trouble
[Trouble symptom 2] The fan motor does not rotate when the
outdoor unit is operating.(Diagnostic procedure)
* Disconnect the motor connectors and measure the voltage at the
DC motor connectors on the outdoorunit controller (3
locations).
Measurement location Normal value(1) Vs-Gnd: Between pin 1 and
pin 4 DC 230 V or more(2) Vcc-Gnd: Between pin 5 and pin 4 DC 14 V
or more(3) Vsp-Gnd: Between pin 7 and pin 4 After fluctuating 4
times between DC 1.0 – 4.3 V
(1 sec. ON) and DC 0 V (1 sec. OFF), the DCmotor trips.
(Diagnostic results)All of the above measured values are normal.
→ Fan motor trouble (Replace the motor.)Any one of the above
measured values is not normal. → Outdoor unit controller
trouble
(Replace the controller .)(Reference) DC motor connector pin
arrangement
Pin 1: Vs (white)Pin 2: Not usedPin 3: Not usedPin 4: Gnd
(black)Pin 5: Vcc (red)Pin 6: FG (blue)Pin 7: Vsp (yellow)
[Trouble symptom 3] Motor rotates for some time (several
seconds), but then quickly stops, when the outdoorunit
operates.(There is trouble in the system that provides feedback of
motor rotation speed from themotor to the outdoor unit
controller.)
[Trouble symptom 4] Fan motor rotation speed does not change
during outdoor unit operation.
[Trouble symptom 5] Fan motor rotation speed varies excessively
during outdoor unit operation.
(Remedy for symptom 3 to 5)It is not possible to identify
whether the trouble is outdoor unit controller trouble or motor
trouble. Therefore, first replace the outdoor unit controller, then
(if necessary) replace the DC motor.
-
42
An inverter A/C operates using pulse signal control and high
frequencies. Therefore, it is susceptible to the effects of
external noise, and is likely to cause electromagnetic interference
with nearby wireless devices. A noise filter is installed for
ordinary use, preventing these problems. However, depending on the
installation conditions, these effects may still occur. Please pay
attention to the points listed below.
■ Noise malfunctionThis refers to the application of
high-frequency noise to the signal wires, resulting in abnormal
signal pulses and malfunction.
Locations most susceptible to noise
1. Locations near broadcast stations where there are strong
electromagnetic waves
2. Locations near amateur radio (short wave) stations
3. Locations near electronic sewing machines and arc-welding
machines
Correction
(The fundamental concept is to make the system less susceptible
to noise.)
— Insulate for noise ordistance from the noise source. —
1. Use shielded wires.2. Move unit away from the noise
source.
Trouble
Either of the following trouble may occur.1. The unit may stop
suddenly during
operation.2. Indicator lamps may flicker.
■ Electromagnetic interferenceThis refers to noise generated by
high-speed switching of the microcomputer and compressor. This
noise radiates through space and returns to the electric wiring,
affecting any wireless devices (televisions, radios, etc.) located
nearby.
Locations most susceptible to noise
1. A television or radio is located near the A/C and A/C
wiring.
2. The antenna cable for a television or radio is located close
to the A/C and A/C wiring.
3. Locations where television and radio signals are weak.
Correction
1. Select a separate power source.2. Keep the A/C and A/C wiring
at least 1 meter
away from wireless devices and antenna cables.3. Change the
wireless device’s antenna to a high-
sensitivity antenna.4. Change the antenna cable to a BS coaxial
cable.5. Use a noise filter (for the wireless device).6. Use a
signal booster.
Trouble
1. Noise appears in the television picture, or the picture is
distorted.
2. Static occurs in the radio sound.
-
43
11-1. Measurement of InsulationResistance
● The insulation is in good condition if the resistanceexceeds
1MΩ.
11-1-1. Power supply cordClamp the grounding wire of power cord
with the leadclip of the insulation resistance tester and
measurethe resistance by placing a probe on either of the twopower
wires. (Fig. 1)
Then also measure the resistance between thegrounding and other
power terminals. (Fig. 1)
11-1-2. Indoor unitClamp an aluminum plate fin or copper tube
with thelead clip of the insulation resistance tester and mea-sure
the resistance by placing a probe on each termi-nal screw where
power supply lines are connected onthe terminal plate. (Fig. 2)
11-1-3. Outdoor unitClamp an aluminum plate fin or copper tube
with thelead clip of the insulation resistance tester and mea-sure
the resistance by placing a probe on each termi-nal screw on the
terminal plate. (Fig. 2)
Note that the ground line terminal should be skippedfor the
check.
11-1-4. Measurement of insulation resistance for electrical
parts
Disconnect the lead wires of the desired electric partfrom
terminal plate, capacitor, etc. Similarly discon-nect the
connector. Then measure the insulationresistance. (Figs. 3 and
4)
Refer to Electric Wiring Diagram.
If the probe cannot enter the poles because the holeis too
narrow then use a probe with a thinner pin.
NOTE
Insulation tester
Probe
Clip
Ground wire
Fig. 1
Terminal plate
Coppertube ormetallic part
Clip
Insulation tester
Probe
Fig. 2
Coppertube ormetallic part
Clip
Insulation tester
Probe
Fig. 3
Clip
Insulation tester
ProbeMetallic part
From fan motor,compressor and other parts
Fig. 4
11. CHECKING ELECTRICAL COMPONENTS
-
44
11-2. Checking Continuity of Fuseon PCB Ass’y
● Remove the PCB Ass’y from the electrical compo-nent box. Then
pull out the fuse from the PCBAss’y. (Fig. 5)
● Check for continuity using a multimeter as shownin Fig. 6.
Fuse
PCB Ass’y
Fig. 5
Fuse
Fig. 6
-
45
12. REFRIGERANT R410A: SPECIAL PRECAUTIONS WHEN SERVICING
UNIT
12-1. Characteristics of New Refrigerant R410A12-1-1. What is
New Refrigerant R410A?R410A is a new refrigerant that contains two
types of pseudo-non-azeotropic refrigerant mixture.
Itsrefrigeration capacity and energy efficiency are about the same
level as the conventional refrigerant, R22.
12-1-2. Components (mixing proportions)HFC32 (50%) / HFC125
(50%)
12-1-3. Characteristics● Less toxic, more chemically stable
refrigerant
● The composition of refrigerant R410A changes whether it is in
a gaseous phase or liquid phase. Thus, whenthere is a refrigerant
leak the basic performance of the air conditioner may be degraded
because of a changein composition of the remaining refrigerant.
Therefore, do not add new refrigerant. Instead, recover
theremaining refrigerant with the refrigerant recovery unit. Then,
after evacuation, totally recharge the specifiedamount of
refrigerant with the new refrigerant at its normal mixed
composition state (in liquid phase).
● When refrigerant R410A is used, the composition will differ
depending on whether it is in gaseous or liquidphase, and the basic
performance of the air conditioner will be degraded if it is
charged while the refrigerant isin gaseous state. Thus, always
charge the refrigerant while it is in liquid phase.
12-2. Checklist Before ServicingUse a clutch-type flare tool for
R410A or the conventional flare tool. Note that sizes of the
resultant flares differbetween these two tools. Where a
conventional flare tool is used, make sure to observe A
Specification (amountof extrusion) by using the flare spacer.
● Size of flare
CAUTION Ether-type oil is used for compressor oil for R410A-type
units, which is differentfrom the mineral oil used for R22. Thus
more attention to moisture prevention andfaster replacement work
compared with conventional models are required.
Diameter of tube (ø) DA Specification
Flare tool for R410A Conventional flare tool (for R22)ø6.35
(1/4") 0 – 0.5 mm 1.0 – 1.5 mmø9.52 (3/8") 0 – 0.5 mm 1.0 – 1.5
mm
A
øD
Flare tool for R410A
A
1.2
øD
Conventional flare tool (R22)
Spacer
-
46
● Tubing precautions
Refrigerant R410A is more easily affected by dust or moisture
compared with R22, thus be sure to temporarilycover the ends of the
tubing with caps or tape prior to installation.
Never use 0.7mm-thick copper tubing or tubing which is less than
0.8mm in thickness, since air conditionerswith R410A are subject to
higher pressure than those using R22 and R407C.
● No addition of compressor oil for R410ANo additional charge of
compressor oil is permitted.
● No use of refrigerant other than R410ANever use a refrigerant
other than R410A.
● If refrigerant R410A is exposed to fireThrough welding, etc.,
toxic gas may be released when R410A refrigerant is exposed to
fire. Therefore, besure to provide ample ventilation during
installation work.
● Caution in case of R410A leakCheck for possible leak points
with the special leak detector for R410A. If a leak occurs inside
the room, imme-diately provide thorough ventilation.
-
47
12-3. Tools Specifically for R410A● For servicing, use the
following tools for R410A
● To prevent other refrigerants (R22, R407C) from being
mistakenly charged to this unit, sizes of the serviceports and
flare nuts of the narrow tube service valve and wide tube service
valve have been altered.
12-4. Tubing Installation ProceduresWhen the tubes are
connected, always apply HAB oil on the flare portions to improve
the sealing of tubing.
The following is the HAB oil generally used:
Esso: ZERICE S32
For details on tubing installation procedures, refer to the
installation manuals attached to theindoor unit and outdoor
unit.
NOTE
Tool Distinction Tool Name● Gauge manifold
● Charging hose
● Gas leak detector
● Refrigerant cylinder
● Charging cylinder
● Refrigerant recovery unit
● Vacuum pump with anti-reverse flow (*1)(Solenoid
valve-installed type, which prevents oil from flowing back into
theunit when the power is off, is recommended.)
● Vacuum pump (*2) … can be used if the following adapter is
attached.● Vacuum pump adapter (reverse-flow prevention adapter)
(*3).
(Solenoid valve-installed adapter attached to a conventional
vacuum pump.)
● Electronic scale for charging refrigerant
● Flare tool
● Bender
● Torque wrench
● Cutter, reamer
● Welding machine, nitrogen gas cylinder
Tools specifically for R410A
Tools which can be com-monly used for R22,R407C, and R410A
CAUTION ● The above tools specifically for R410A must not be
used for R22 and R407C.Doing so will cause malfunction of the
unit.
● For the above vacuum pump ( *1, *2) and vacuum pump adapter (
*3), those forR22-type units can be used for R407C-type. However,
they must be used exclu-sively for R410A and never alternately with
R22 and R407C.
-
48
12-5. In Case of Compressor Malfunction
12-5-1. Procedure for replacing compressor(1) Recovering
refrigerant
● Any remaining refrigerant inside the unit should not
bereleased to the atmosphere, but recovered using therefrigerant
recovery unit for R410A.
● Do not reuse the recovered refrigerant, since it willcontain
impurities.
(2) Replacing Compressor
● Soon after removing seals of both discharge and suc-tion tubes
of the new compressor, replace it quickly.
(3) Checking for sealing
● Use nitrogen gas for the pressurized gas, and neveruse a
refrigerant other than R410A. Also do not useoxygen or any
flammable gas.
(4) Evacuation
● Use a solenoid valve-installed vacuum pump sothat even if
power is cut off in the middle of evacuationof air due to a power
interruption, the valve will pre-vent the pump oil from flowing
back.
● The equipment may be damaged if moisture remainsin the tubing,
thus carry out the evacuation thoroughly.
● When using a vacuum pump with exhaust air volumemore than
25L/min. and ultimate vacuum pressurerate of 0.05Torr:
Standard time for evacuation
CAUTION ● Should the compressor malfunction, be sure to make the
switch to a replacementcompressor as quickly as possible.
● Use only the tools indicated exclusively for R410A. ➞ See
“12-3. ToolsSpecifically for R410A.”
(1) Recover refrigerant
OK
(2) Replace compressor
OK
(3) Check for sealing
OK
(4) Evacuation
OK
(5) Recharge
Length of tubing Less than 10 meters More than 10 metersTime
More than 10 minutes More than 15 minutes
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49
(5) Recharging
● Be sure to charge the specified amount ofrefrigerant in liquid
state using the service portof the wide tube service valve. The
properamount is listed on the unit's nameplate.
When the entire amount cannot be charged all atonce, charge
gradually while operating the unitin Cooling Operation.
● When charging with a refrigerant cylinder, usean electronic
scale for charging refrigerant. Inthis case, if the volume of
refrigerant in the cylin-der becomes less than 20% of the
fully-chargedamount, the composition of the refrigerant startsto
change. Thus, do not use the refrigerant ifthe amount in the
charging cylinder is lessthan 20%.
Also, charge the minimum necessary amount tothe charging
cylinder before using it to chargethe air conditioning unit.
Example:In case of charging refrigerant to a unit
requiring0.76Kg using a capacity of a 10Kg cylinder, theminimum
necessary amount for the cylinder is:
0.76 + 10 × 0.20 = 2.76Kg
For the remaining refrigerant, refer to theinstructions of the
refrigerant manufacturer.
● If using a charging cylinder, transfer the speci-fied amount
of liquid refrigerant from the refriger-ant cylinder to the
charging cylinder.
Prepare an evacuated charging cylinder before-hand.
Do not use the refrigerant if the amount inthe charging cylinder
is less than 20%.
CAUTION Never charge a large amountof liquid refrigerant at once
tothe unit. This may cause dam-age to the compressor.
CAUTION ● To prevent the compositionof R410A from changing,never
bleed the refrigerantgas into the atmospherewhile transferring the
refrig-erant. (Fig. 3)
Valve
Single valveCharge liquid refrigerant with cylinder in
up-side-down position.
Liquid
Fig. 1
Valve
Single valve (with siphon tube)Charge with cylinder in normal
position.
Liquid
Fig. 2
Chargingcylinder
Open Refrigerantcylinder
Liquid
NO!
Fig. 3
Configuration and characteristics of cylinders
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50
12-6. In Case Refrigerant is Leaking
(1) Detecting Leaks
● Use the detector for R410A to locate refrigerant
leakpoints.
(2) Recovering refrigerant
● Never release the gas to the atmosphere; recoverresidual
refrigerant using the refrigerant recovery unitfor R410A,
instead.
● Do not reuse the recovered refrigerant because itscomposition
will have been altered.
(3) Welding leaking points
● Confirm again that no residual refrigerant exists in theunit
before starting welding.
● Weld securely using flux and wax for R410A.
● Prevent oxide film from forming inside the tubes utiliz-ing
substitution with nitrogen (N2) in the refrigerantcircuit of the
unit. Leave ends of tubes open duringwelding.
(4) Checking for sealing
● Use nitrogen gas for the pressurized gas, and neveruse a
refrigerant other than R410A. Also do not useoxygen or any
flammable gas.
(5) Evacuation
● Use a solenoid valve-installed vacuum pump sothat even if
power is cut off in the middle of evacuationof air due to a power
interruption, the valve will preventthe pump oil from flowing
back.
● The equipment may be damaged if moisture remainsin the
tubing