Euro-Line ADR522CW Technical & Service Manual Download Page 54

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Repair or repla-
ce.

Fan motor burnout or
foreign matter in bea-
ring.

Replace capacitor.

Replace fan motor.

Check fan motor capacitor.

Measure resistance of fan motor
winding.

Check output of fan motor terminals
on PCB Ass’y.

Fan cannot
be turned

Check fan rotation. Turn fan gently
once or twice by hand.

1) ONLY INDOOR FAN DOES NOT RUN

Check fan casing for
foreign matter on inside.

Remove foreign
matter or repair.

SOME PARTS OF AIR CONDITIONER DO NOT OPERATE

Fan turn
normal

Repair or repla-
ce.

Fan motor burnout or
foreign matter in bea-
ring.

Measure the resistance of outdoor
fan motor winding.

Check fan motor capacitor.

Fan cannot
be turned.

Check fan rotation. Turn fan gently
once or twice by hand.

3) ONLY OUTDOOR FAN DOES NOT RUN

Check fan casing for
foreign matter on inside.

Remove foreign
matter or repair.

Defrost controller (POW-C92 GH)
is defective in outdoor unit.

2) FUNCTION OF OUTDOOR FAN SPEED CONTROL DOES NOT WORK PROPERLY

(only for SAP-C228E5 / SAP-C228E38)

• Check thermostat in outdoor

unit. (23S)

• Check electronic fan speed regu-

lator (SSR)

Only for low ambient version

units (AER522SCL3)

Summary of Contents for ADR522CW

Page 1: ...ADR522CW AE522SC AE522SC3 AER522SCL3 ADR522HW AE522HS AE522HS3 AER522HS3 OUTDOOR UNIT 0 8180 225 0 SPLIT SYSTEM AIR CONDITIONER INDOOR UNIT OCTOBER 01 TECHNICAL SERVICE MANUAL ...

Page 2: ...NT FLOW DIAGRAM 29 G TROUBLESHOOTING HEATING MODEL 34 I SAME PARTS OF AIR CONDITIONER DO NOT OPERATE 41 L AIR CONDITIONER OPERATES BUT ABNORMALITIES OCCUR 44 M TROUBLESHOOTING COOLING MODEL 45 N SAME PARTS OF AIR CONDITIONER DO NOT OPERATE 52 O AIR CONDITIONER OPERATES BUT ABNORMALITIES OCCUR 53 P CHECKING ELECTRICAL COMPONENTS 56 Q OTHERS COMPONENTE SPECIFICATIONS 15 D ...

Page 3: ...aximum 27 C DB 19 C WB 24 C DB 18 C WB Minimum DB WB 5 8 C DB 9 C WB Heating A OPERATING RANGE 1 Maximum 35 C BS 22 C BU 50 C BS Minimum 19 C BS 14 C BU 5 15 C BS Referred to the systems ADR522CW AER522SCL3 only 3 phase and low ambient version INDOOR UNIT OUTDOOR UNIT Indoor air Outdoor air Function Temperature intake temp intake temp Cooling ...

Page 4: ...cked rotor amperes A 70 C O P W W 2 42 Controls Microprocessor Control unit Remote control Temperature control I C thermostat Timer ON OFF 12 hours Fan speed indoor outdoor 3 and auto 2 auto Air filter Washable easy access Compressor Rotary hermetic Refrigerant ref control amount charged at ship g R22 capillary tube 2 5 g Max tubing length m with factory R22 charge 10 Required amount of additional...

Page 5: ...r amperes A 28 C O P W W 2 4 Controls Microprocessor Control unit Remote control Temperature control I C thermostat Timer ON OFF 12 hours Fan speed indoor outdoor 3 and auto 2 auto Air filter Washable easy access Compressor Rotary hermetic Refrigerant ref control amount charged at ship g R407c capillary tube 2 38 g Max tubing length m with factory R22 charge 10 Required amount of additional refrig...

Page 6: ...amperes A 28 C O P W W 2 2 Controls Microprocessor Control unit Remote control Temperature control I C thermostat Timer ON OFF 12 hours Fan speed indoor outdoor 3 and auto 2 auto Air filter Washable easy access Compressor Rotary hermetic Refrigerant ref control amount charged at ship g R407c capillary tube 2 410 g Max tubing length m with factory R407c charge 10 Required amount of additional refri...

Page 7: ...ked rotor amperes A 70 C O P W W 2 3 2 5 Controls Microprocessor Control unit Remote control Temperature control I C thermostat Timer ON OFF 12 hours Fan speed indoor outdoor 3 and auto 2 auto Air filter Washable easy access Compressor Rotary hermetic Refrigerant ref control amount charged at ship g R22 capillary tube 2 28 g Max tubing length m with factory R22 charge 10 Required amount of additio...

Page 8: ...ocked rotor amperes A 28 C O P W W 2 36 2 73 Controls Microprocessor Control unit Remote control Temperature control I C thermostat Timer ON OFF 12 hours Fan speed indoor outdoor 3 and auto 2 auto Air filter Washable easy access Compressor Rotary hermetic Refrigerant ref control amount charged at ship g R22 capillary tube 2 46 g Max tubing length m with factory R22 charge 10 Required amount of add...

Page 9: ...ed rotor amperes A 28 C O P W W 2 1 2 5 Controls Microprocessor Control unit Remote control Temperature control I C thermostat Timer ON OFF 12 hours Fan speed indoor outdoor 3 and auto 2 auto Air filter Washable easy access Compressor Rotary hermetic Refrigerant ref control amount charged at ship g R407c capillary tube 2 40 g Max tubing length m with factory R407c charge 10 Required amount of addi...

Page 10: ...rols Microprocessor Number dia length mm 2 Ø 200 L 230 Control circuit fuse 250V 3A Model Number K48415M01535 1 Power source V 220 230 240 1 50 Hz No di poli giri min 230V max 4 800 Nominal output W 65 Ω WHT BRN 181 1 ORG VLT 136 8 YEL ORG 151 4 BLK YEL 120 6 WHT VLT 112 7 VLT PNK 144 2 Coil resistance Ambient temp 20 C SAFETY DEVICES Internal type Operating temp Model PC Total head capacity 0 4 m...

Page 11: ...amp Ambient temp 25 C Trip in 6 to 16 sec at 59 A Run capacitor µF 40 0 VAC 450 Crank case heater 240V 30W Type Propeller Number Dia mm 1 ø 460 Fan motor model Number Smen 19TFB6064 1 No of poles rpm 230 V High 6 836 Nominal output W 50 Coil resistance Ambient temp 20 C Ω WHT BRN 99 5 7 WHT YEL 252 0 7 WHT PNK 63 2 7 Safety Type Thermal protector devices Operating temp Open C 130 5 Close Automatic...

Page 12: ... WHT YEL Ω Safety devices Type Open C Close µF VAC HEAT EXCH COIL Coil Rows Fin pitch mm Face area m2 EXTERNAL FINISH Acrylic baked on enamel finish Data subject to change without notice 380 400 V 3N 50 Hz 220 240 V 50 Hz POW C226GH Rotary Hermetic 380 400 V 3N 50 Hz Run capacitor 240 V 30 W Propeller Internal protector 130 8 Operating temp Automatic reclosing 1 Ø460 Smen 19TFB6064 1 220 240 V 50 ...

Page 13: ... Ω WHT YEL Ω Safety devices Type Open C Close µF VAC HEAT EXCH COIL Coil Rows Fin pitch mm Face area m2 EXTERNAL FINISH Acrylic baked on enamel finish Data subject to change without notice 380 400 V 3N 50 Hz 220 240 V 50 Hz POW C226GH Rotary Hermetic 380 400 V 3N 50 Hz Run capacitor 240 V 30 W Propeller Internal protector 130 8 Operating temp Automatic reclosing 1 Ø460 Smen 19TFB6064 1 220 240 V 5...

Page 14: ...mbient temp 25 C Trip in 6 to 16 sec at 57 A Run capacitor µF 40 0 VAC 400 Crank case heater 240V 30W Type Propeller Number Dia mm 1 ø 460 Fan motor model Number Smen 19TFB6064 1 No of poles rpm 230 V High 6 840 Nominal output W 63 Coil resistance Ambient temp 20 C Ω WHT BRN 99 5 7 WHT YEL 252 0 7 WHT PNK 63 2 7 Safety Type Thermal protector devices Operating temp Open C 130 5 Close Automatic recl...

Page 15: ...rating amp Ambient temp 25 C 7A Run capacitor µF VAC Crank case heater 240V 30W Type Propeller Q ty Dia mm 1 ø460 Fan motor model Q ty SMEN 19TFB6064 1 Source 220 230 V 50 Hz No of poles rpm 220 V High 6 840 Nominal output W 50 Coil resistance Ambient temp 20 C Ω WHT BRN 99 5 WHT YEL 252 WHT PNK 63 2 Safety Type Internal type devices Operating temp Open C 130 5 Close Automatic reclosing Run capaci...

Page 16: ...erating amp Ambient temp 25 C 7A Run capacitor µF VAC Crank case heater 240V 30W Type Propeller Q ty Dia mm 1 ø460 Fan motor model Q ty SMEN 1STFB6064 1 Source 220 230 V 50 Hz No of poles rpm 220 V High 6 840 Nominal output W 50 Coil resistance Ambient temp 20 C Ω WHT BRN 99 5 WHT YEL 252 WHT PNK 63 2 Safety Type Internal type devices Operating temp Open C 130 5 Close Automatic reclosing Run capac...

Page 17: ...3 Switching temp C high LOW 28 5 C 1 low HIGH 31 C 1 Outdoor Unit AE522SC Thermostat Fan Speed Control 23S MQT5S 27YZJ Switching temp C high LOW 23 5 C 0 2 5 low HIGH 27 0 C 0 3 Contact rating AC 220V 3A Power Relay G7L 2A TUB Coil rating AC 200 240V 50 60Hz Coil resistance kΩ at 23 C 21 15 Contact rating AC 220V 25A Outdoor Unit AE522SC 15 D OTHER COMPONENT SPECIFICATIONS ...

Page 18: ...0 10 Contact rating Main AC 440V 8A Thermal relay Overcurrent relay Operating amperes 7A Negative Phase Relay 47C RDR S400 Rating AC 415V 3 phase 50Hz Contact rating AC 400V 1A Operation Positive phase ON Negative phase OFF Thermostat Fan Speed Control 23S YTB S383 Switching temp C high LOW 28 5 C 1 low HIGH 31 C 1 Outdoor Unit AE522SC3 16 ...

Page 19: ...l relay Overcurrent relay Operating amperes 7A Negative Phase Relay 47C RDR S400 Rating AC 415V 3 phase 50Hz Contact rating AC 400V 1A Operation Positive phase ON Negative phase OFF Thermostat Fan Speed Control 23S YTB S383 Switching temp C high LOW 28 5 C 1 low HIGH 31 C 1 Outdoor Unit AER522SCL3 17 Pressure Trasducer Range Bar 14 to 24 Factory Setting Bar 16 0 5 Johnson C P35 AC ...

Page 20: ...at Fan Speed Control 23S YTB S383 Switching temp C high LOW 28 5 C 1 low HIGH 31 C 1 Thermostat Defrost thermo 23D TRS02 12MSR316 Operating temp C ON 12 2 Diff 8 deg below Magnetic Contactor MG HE 20FT31B Coil rating AC 220 240 V 50Hz Coil resistance Ω at 25 C 1 050 15 Contact rating Main AC 220V 20A Outdoor Unit AE522SH ...

Page 21: ...C RDR S400 Rating AC 415V 3 phase 50Hz Contact rating AC 400V 1A Operation Positive phase ON Negative phase OFF 4 way Valve 20S LB64012 Coil V26 110D Valve Coil rating AC 220 240V 50Hz 6W Coil resistance Ω at 20 C 1 740 7 Thermostat Defrost thermo 23D TRS02 12MSR316 Operating temp C ON 12 2 Diff 8 deg below Thermostat Fan Speed Control 23S YTB S383 Switching temp C high LOW 28 5 C 1 low HIGH 31 C ...

Page 22: ...7C RDR S400 Rating AC 415V 3 phase 50Hz Contact rating AC 400V 1A Operation Positive phase ON Negative phase OFF 4 way Valve 20S LB64012 Coil V26 110D Valve Coil rating AC 220 240V 50Hz 6W Coil resistance Ω at 20 C 1 740 7 Thermostat Defrost thermo 23D TRS02 12MSR316 Operating temp C ON 12 2 Diff 8 deg below Thermostat Fan Speed Control 23S YTB S383 Switching temp C high LOW 28 5 C 1 low HIGH 31 C...

Page 23: ...T 20 60 200 Refrigerant liquid line Narrow tube ø 6 35 Refrigerant gas line Wide tube ø 15 88 Drain connection outside diam 32 Electrical junction box Power supply entry Mounting for suspention Duct connection for discharge ø 200 Duct connection for suction Fresh air intake ø 150 ...

Page 24: ...22 Outdoor Unit Wide tube service valve ø15 88 5 8 Narrow tube service valve ø6 35 1 4 86 88 155 57 73 86 229 285 835 620 130 100 20 20 325 850 250 250 560 6 ø3 1 holes Air intake Air discharge Unit mm ...

Page 25: ... automatic time delay to allow the internal pressure to equalize As a protective measure the control circuit switches the compressor OFF after 5 minutes or more of compressor operation Thermo ON When the room temperature is above T 1 C T C is set temperature Compressor ON Thermo OFF When the room temperature in equal to or below set temperature T C Compressor OFF MORE THAN 5 MINUTES THERMO OFF MOR...

Page 26: ...s or more of compressor operation Thermo ON when the room temperature is below T 1 C T C is set temperature Compressor ON Thermo OFF when the room temperature is equal to or above set temperature T C Compressor OFF OFF SET TEMP MORE THAN 5 MINUTES ROOM TEMP THERMO OFF THERMO ON THERMO OFF 5 MINUTES ON ON OFF OFF OFF ON ON OFF OFF OFF LL SET SPEED LL SET SPEED LL 30 SECONDS 30 SECONDS OFF ON OFF ON...

Page 27: ...OR 1 C T 0 5 C T C ROOM TEMP THERMO OFF THERMO ON SET TEMP MORE THAN 10 MINUTES 3 OVERLOAD PREVENTION HEATING This function prevents overheating of the indoor heat exchange coil For indoor units SAP UR228EH only When the temperature of the indoor heat exchange coil rises above 59 C and if the indoor fan is L low speed then the fan speed changes from L low speed to M medium speed When the temperatu...

Page 28: ... H o M o L H H M M L M ON 59 49 INDOOR FAN COMPRESSOR H High speed M Medium speed L Low speed When the temperature of the indoor heat exchange coil rises above 59 C and if the indoor fan is L low speed then the fan speed changes from L low speed to M medium speed ...

Page 29: ... compressor is longer than 1 5 hours Thermo OFF Compressor OFF Temperature of indoor heat exchanger coil is lower than 53 C Thermo ON Compressor ON Defrosting thermo in the outdoor unit is OFF Below 4 C Defrosting begins Cold draft prevention Release of defrosting Temperature of outdoor heat exchange coil is higher than 12 C Defrosting time is over 11 5 minutes Temperature of indoor heat exchanger...

Page 30: ...REVENTION L L Low low speed 2 SECONDS 6 OUTDOOR FAN SPEED CONTROL COOLING To optimize performance of the air conditioner the outdoor fan speed is switched automatically according to the outdoor temperature If the outdoor air temperature falls below 28 5 C the fan speed switches to LOW If the outdoor air temperature rises above 31 5 C for 5 minutes or longer the fan speed switches to HIGH This func...

Page 31: ...tube service valve Narrow tube O D ø6 35 mm 1 4 Evaporator Capillary for liquid injection Indoor Unit Outdoor Unit Muffler Capillary tube Condenser Check port Accumulator Strainer Indoor Unit ADR522CW Outdoor Unit AE522SC AE522SC3 AER522SCL3 Indoor Unit ADR522HW Outdoor Unit AE522SH AE522SH3 AER522SH3 ...

Page 32: ...speed varies with indoor temperature conditions Hatching area The unit is protected against high pressure by means of the outside temperature sensor and thus when the outside ambient temperature reaches 30 C respectively the fan speed is forced to high 1000 1000 800 600 400 200 0 10 10 5 0 5 10 10 15 20 25 30 35 ROT ATION SPEED OF F AN rpm CONDITIONS ROOM TEMPERATURE 19 4 C DB 13 9 C WB 220V 50 HZ...

Page 33: ... 9 1 12 1 2 GRN YEL E BLK BRN 235V P O 19V S O SEC 1 1 2 2 3 3 4 4 5 5 6 6 8 8 GRY GRY WHT VLT ORG YEL BLK BRN PNK 1 1 7 7 9 9 GRY GRY 2 2 6 6 4 5 5 1 1 3 3 2 2 VLT ORG YEL BLK BRN BRN PNK GRN YEL 1 1 2 2 1 4 12 9 VLT ORG YEL BLK BRN BRN BLK BLK 1 1 2 2 3 4 3 4 1 2 BLK BLK WHT GRN YEL ORG 4 1 1 1 1 2 2 2 2 1 1 2 2 GRN YEL BLK BLK BLK BLK BLK BLK BLU WHT 1 1 2 2 1 1 2 2 1 2 1 1 12 S S 12 1 1 5 5 1 ...

Page 34: ...Outdoor Unit AE522SH 32 AE522SH3 AER522SH3 ...

Page 35: ...1 L3 L2 N TP2 GRN YEL FMO CM GRY GRY GRN YEL 7 U W 14 V U W MG A 8 GRY S 13 R T B YEL RED WHT BLU R S T GRN YEL GRN YEL GRY RED RED RED GRY WHT BLU RED BLU 47C S A C T R B BLK WHT BRN CC ORG THERMO C2 WHT YEL BRN PNK GRY WHT YEL BRN PNK GRY GRY ...

Page 36: ...R 5 2 2 S H 3 b Check inter unit wiring Check that inter unit wiring both the power wiring and control wiring is correctly connected to the indoor unit from the outdoor unit No 8 9 10 and No 11 on the terminal plate in the outdoor unit OUTDOOR INDOOR UNIT UNIT a b c d e f g h INTER UNIT CONTROL WIRING a b c d e f g h POWER SUPPLY 50 Hz Single phase 220 230 240 V GROUND POWER SUPPLY GROUND INTER UN...

Page 37: ...r is being supplied d Check lead wires and connectors in indoor and outdoor units Check that coating of lead wires is not damaged Check that lead wires and connectors are connected firmly Check that wiring is correct L1 L2 L3 N 400V 400V 230 V 400V L N 230V Single phase systems Three phase systems ...

Page 38: ... Power is not supplied Check drain pump and drain hose Function of compressor winding protection works Indoor unit sensor are defective Open or short circuit Limit float switch has operated OPEN Check power supply Neither indoor unit nor outdoor unit runs Measure insulation resistance of power supply wires Check capacity of circuit breaker Meaure resistance of electrical components Reposition the ...

Page 39: ...reaker Outdoor unit 1 2 3 4 5 6 7 8 Unità esterna x x 3 4 5 6 7 8 Unità esterna x x x x x x x x x x x x x x Indoor unit 1 2 3 4 5 6 7 8 Ground Power supply Inter unit control wiring a b c d ADR522HW AE522SH z Inter unit power wiring Circuit breaker Outdoor unit 1 2 z 4 5 6 7 8 Unitx x x x Unità esterna x x x x x x x x x x x x x x Indoor unit 1 2 3 4 5 6 7 8 Power supply wiring a b c d ADR522HW AE5...

Page 40: ...t Measure insulation resistance of outdoor unit Insulation of outdoor unit is defective Measure insulation resistance of electrical parts in outdoor unit Measure insulation resistance of electrical parts in indoor unit Insulation of indoor unit is defective Remove inter unit wires from terminal plate in intdoor unit Measure insulation resistance of intdoor unit Measure insulation resistance of int...

Page 41: ...tactor MG or 52C In case of Heating operation Measure resistance of 4 way valve s winding 20S or SC OK NO YES OK Measure resistance of outdoor fan motor winding Measure resistance of outdoor fan motor winding Check capacity of circuit breaker Capacity of circuit breaker is suitable NO Check is drain flow prevented YES Check if the drain pump is working Measure resistance of drain pump motor windin...

Page 42: ...stance of primary and secondary winding f Check indoor fan motor protector Wait for 30 minutes and then try to run Indoor fan motor internal protector trips Air conditioner starts running Air conditioner does not run again Check fan rotation Turn fan gently once or twice by hand Remove foreign matter or repair Check fan casing for foreign matter on inside Fan motor burnout or foreign matter in bea...

Page 43: ...T RUN Check fan casing for foreign matter on inside Remove foreign matter or repair L SOME PARTS OF AIR CONDITIONER DO NOT OPERATE Fan turn normal Repair or repla ce Fan motor burnout or foreign matter in bearing OK Measure the resistance of outdoor fan motor winding Check fan motor capacitor Fan cannot be turned Check fan rotation Turn fan gently once or twice by hand 2 ONLY OUTDOOR FAN DOES NOT ...

Page 44: ...her OLR or 49C Replace compressor Charge refrigerant gas R22 Check compressor motor capacitor Either C1 or BC Check power supply voltage Voltage is abnormally low Check compressor There is a possibility of locked rotor Measure resistance of compressor motor winding Outdoor unit AE522SH Check continuity between terminals on the magnetic contactor MG Contact power utility company to have power volta...

Page 45: ... power supply voltage Voltage is abnormally low Contact power utility company to have power voltage restored to normal Check compressor There is a possibility of locked rotor NO 90 or more of rated voltage YES YES YES O K NO Check compressor motor internal protector 49C Temperature of compressor is abnormally high Refrigerant gas shortage Compressor is defective YES NO Charge refrigerant gas R22 o...

Page 46: ...e temperatures of suction and discharge air of air conditioner Refrigerant gas shortage Possibility of gas shortage Charge refrigerant gas R22 OR 407C Clean filter Check for clogging of air filter Use the booster cable Long extension of ducts Refrigerant flow failure Replace Indoor coil sensor is defective Air circulation is a little Replace 4 way valve is defective Cold air is discharged Replace ...

Page 47: ...unit wiring both the power wiring and control wiring is correctly connected to the indoor unit from the outdoor unit c Check power supply Check that voltage is in specified range 10 of the rating Check that power is being supplied OUTDOOR INDOOR UNIT UNIT INTER UNIT WIRING POWER SUPPLY GROUND ADR522CW AE522SC POWER SUPPLY GROUND ADR522CW AE522SC3 ADR522CW AER522SCL3 L1 L2 L3 N L1 L2 L3 N 400V 400V...

Page 48: ...ower is not supplied Check drain pump and drain hose Function of compressor winding protection works Indoor unit sensor are defective Open or short circuit Limit float switch has operated OPEN Check power supply Neither indoor unit nor outdoor unit runs Measure insulation resistance of power supply wires Check capacity of circuit breaker Meaure resi stance of electrical com ponents Reposition the ...

Page 49: ... Power sypply Inter unit wiring a b c d Set circuit breaker to OFF Unità esterna L1 L2 L3 N 5 6 7 8 z z ADR522CW AE522SC ADR522CW AE522SC3 ADR522CW AER522SCL3 Remove power supply wires from terminal plate in outdoor unit Measure insulation resistance of power supply wires Do rewiring Do rewiring Remove inter unit wires from terminal plate in outdoor unit Measure insulation resistance of outdoor un...

Page 50: ...nly Measure coil resistance of magnetic contactor MG or 52C OK NO YES OK Measure resistance of compressor motor winding Measure resistance of outdoor fan motor winding Check capacity of circuit breaker Capacity of circuit breaker is suita ble NO Check is drain flow prevented YES Check if the drain pump is working Measure resistance of drain pump motor winding Replace drain pump Check function of l...

Page 51: ...asure resistance of primary and secondary winding TR f Check indoor fan motor protector Wait for 30 minutes and then try to run Indoor fan motor internal protector trips Air conditioner starts running Air conditioner does not run again Check fan rotation Turn fan gently once or twice by hand Remove foreign matter or repair Check fan casing for foreign matter on inside Fan motor burnout or foreign ...

Page 52: ...O NO YES Refrigerant gas shortage Check power supply voltage Is voltage abnormally low Is outdoor heat exchanger coil dirty or are there obstacles near air suction inlet of outdoor unit Check overload relay and or compressor motor internal pro tector OLR 49C Measure resistance of compres sor motor winding Is temperature of compressor abnormally high Check compressor motor capaci tor C1 YES Rewire ...

Page 53: ...rty or are there obstacles near air suc tion inlet Check compressor motor over current relay 51C Check power supply voltage Is voltage abnormally low Check compressor There is a possibility of locked rotor Is temperature of compressor abnormally high Refrigerant gas shortage Charge refrigerant gas YES YES NO It s operated NO 90 or more of rated voltage R22 or R407C ...

Page 54: ...IONER DO NOT OPERATE Fan turn normal Repair or repla ce Fan motor burnout or foreign matter in bea ring OK Measure the resistance of outdoor fan motor winding Check fan motor capacitor Fan cannot be turned Check fan rotation Turn fan gently once or twice by hand 3 ONLY OUTDOOR FAN DOES NOT RUN Check fan casing for foreign matter on inside Remove foreign matter or repair Defrost controller POW C92 ...

Page 55: ...outdoor units are not insulated Air filter is clogged Measure temperatures of suction and discharge air of air conditioner Refrigerant gas shortage Possibility of gas shortage Charge refrige rant gas R22 Clean filter Check for clogging of air filter Use the booster cable Long extension of ducts Refrigerant flow failure Air circula tion is a little a P AIR CONDITIONER OPERATES BUT ABNORMALITIES OCC...

Page 56: ...ce tester and measure the resistance by placing a probe on and then on the terminal plate Fig 2 c Outdoor Unit Clamp a metallic part of the unit with the lead clip of the insulation resistance tester and measure the resistance by placing a probe on and then on the terminal plate Fig 2 d Measurement of Insulation Resistance for Electrical Parts Disconnect the lead wires of the disired electric part...

Page 57: ...ead wiers from the capacitor terminals and then place a probe on the capacitor terminals as shown in Fig 7 Observe the deflection of the pointer setting the resistance measuring range of the multimeter to the maximum value The capacitor is good if the pointer bounces to a great extent and then gradually returns to its original position The range of deflection and deflection time deffer according t...

Page 58: ...Printed in italy Via Varese 90 21013 Gallarate Va Italy Tel 39 0331 755111 Fax 39 0331 776240 www argoclima it ...

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