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40

9-2. Air conditioner does not operate.

9-2-1. Circuit breaker trips (or fuse blows).

A. When the circuit breaker is set to ON, it is tripped soon. (Resetting is not possible.)

●

There is a possibility of ground fault.

●

Check insulation resistance.

If resistance value is 2M

Ω

or less, insulation is defective (“NO”).

1

Indoor

unit

Ground

Outdoor

unit

2

1

2

4

2

4

1

1

N

L2

L1

L3

N

L2

L1

L3

Power
supply

Power
supply
wiring

Inter-unit
wiring

Circuit
breaker

Measure insulation
resistance of electrical
parts in outdoor unit.

NO

NO

Set circuit breaker to OFF.

*

Measure insulation
resistance of electrical
parts in indoor unit.

1

Remove both power supply wires
and inter-unit wires from terminal
plate in outdoor unit.
Measure insulation resistance
of outdoor unit.

•

2

Remove inter-unit wires from
terminal plate in indoor unit.
Measure insulation resistance
of indoor unit.

•

•

•

Insulation of
outdoor unit
is defective.

Insulation of
indoor unit
is defective.

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Содержание GR180C5TAA

Страница 1: ... DATA SERVICE MANUAL Indoor Unit Outdoor Unit MCAV180 220C5VAA GR180C7TAA KPAV180 220C5TAA GR220C7TAA SPLIT SYSTEM AIR CONDITIONER GR180C7TAA GR220C7TAA KP KPAV180 220C5TAA MCAV180 220C5VAA 0 8180 166 0 02 2001 ...

Страница 2: ... WARNING When Transporting Be careful when picking up and moving the indoor and outdoor units Get a partner to help and bend your knees when lifting to reduce strain on your back Sharp edges or thin aluminum fins on the air conditioner can cut your fingers When Installing In a Ceiling or Wall Make sure the ceiling wall is strong enough to hold the units weight It may be necessary to construct a st...

Страница 3: ...N 8 1 Room Temperature Control 37 8 2 Dry Operation 38 8 3 Freeze Prevention 38 9 TROUBLESHOOTING 9 1 Check before and after troubleshooting 39 9 2 Air Conditioner Does not operate 40 9 3 Some Parts of Air Conditioner does not operate 45 9 4 Air Conditioner operates but abnormalities are observed 48 9 5 If a Sensor is defective 49 10 CHECKING ELECTRICAL COMPONENTS 10 1 Measure of insulation Resist...

Страница 4: ...1 1 OPERATING RANGE Temperature Indoor Air Intake Temp Outdoor Air Intake Temp Cooling Maximum 32 C D B 23 C W B 46 C D B Minimum 19 C D B 14 C W B 19 C D B ...

Страница 5: ...4 hours Daily program 1 hour OFF Fan speeds Indoor Outdoor 3 and Auto 1 Hi LO Airflow direction Indoor Horizontal Manual Vertical Auto Air filter Washable Compressor Rotary Hermetic Refrigerant Amount charged at shipment g R22 1405 Refrigerant control Capillary tube Noise Power Level Indoor Hi Me Lo dB A 55 51 49 Outdoor Hi dB A 64 Refrigerant tubing connections Flare type Max allowable tubing len...

Страница 6: ...r 3 and Auto Auto Hi Lo Airflow direction Indoor Horizontal Manual Vertical Auto Air filter Washable Compressor Rotary Hermetic Refrigerant Amount charged at shipment g R22 2380 Refrigerant control Capillary tube Noise Power Level Indoor Hi Me Lo dB A 58 55 52 Outdoor Hi dB A 67 Refrigerant tubing connections Flare type Max allowable tubing length at shipment m 7 5 Refrigerant tube Narrow tube mm ...

Страница 7: ...ndoor Outdoor 3 and Auto Auto Hi Lo Airflow direction Indoor Horizontal Manual Vertical Auto Air filter Washable Anti Mold Compressor Rotary Hermetic Refrigerant Amount charged at shipment g R22 1405 Refrigerant control Capillary tube Noise Power Level Indoor Hi Me Lo dB A 48 44 49 Outdoor Hi dB A 51 Refrigerant tubing connections Flare type Max allowable tubing length at shipment m 10 Refrigerant...

Страница 8: ...d Auto Auto Hi Lo Airflow direction Indoor Horizontal Manual Vertical Auto Air filter Washable Anti mold Compressor Rotary Hermetic Refrigerant Amount charged at shipment g R22 2380 Refrigerant control Capillary tube Noise Power Level Indoor Hi Me Lo dB A 50 47 44 Outdoor Hi dB A 55 Refrigerant tubing connections Flare type Max allowable tubing length at shipment m 10 Refrigerant tube Narrow tube ...

Страница 9: ...m High 2 1 305 Nominal output W 30 Coil resistance Ambient temp 20 C Ω WHT BRN 130 4 WHT PNK 169 8 Safety Type Thermal protector devices Operating temp Open C 130 8 Close Automatic reclosing Run capacitor µF 2 0 VAC 440 Type Stepping motor Model MP24GA2 Rating DC 12 V Coil resistance Ambient temp 20 C Ω Each terminals 1 2 1 3 1 4 1 5 400 7 Coil Aluminum plate fin Copper tube Rows 2 Fin pitch mm 1 ...

Страница 10: ... W 30 Coil resistance Ambient temp 20 C Ω WHT BRN 130 4 WHT PNK 169 8 Safety Type Thermal protector devices Operating temp Open C 130 8 Close Automatic reclosing Run capacitor µF 2 0 VAC 440 Type Stepping motor Model MP24GA2 Rating DC 12 V Coil resistance Ambient temp 20 C Ω Each terminals 1 2 1 3 1 4 1 5 400 7 Coil Aluminum plate fin Copper tube Rows 2 Fin pitch mm 1 3 Face area m2 0 250 Heat Exc...

Страница 11: ...istance Ambient temp 20 C Ω GRY WHT 215 7 WHT VLT 87 7 VLT YEL 87 7 WHT PNK 273 7 Safety Type Internal thermal fuse devices Operating temp Open C 145 5 Close Automatic reclosing Run capacitor µF 2 0 VAC 440 Model M2LJ24ZE31 Rating AC 208 230 V 50 60 Hz No of poles rpm 8 2 5 3 0 Nominal output W 3 2 5 Coil resistance Ambient temp 20 C kΩ 16 45 15 Coil Aluminum plate fin Copper tube Rows 2 Fin pitch...

Страница 12: ...istance Ambient temp 20 C Ω GRY WHT 95 7 WHT VLT 73 7 VLT YEL 73 7 WHT PNK 207 7 Safety Type Internal thermal fuse devices Operating temp Open C 145 5 Close Automatic reclosing Run capacitor µF 2 0 VAC 440 Model M2LJ24ZE31 Rating AC 208 230 V 50 60 Hz No of poles rpm 8 2 5 3 0 Nominal output W 3 2 5 Coil resistance Ambient temp 20 C kΩ 16 45 15 Coil Aluminum plate fin Copper tube Rows 2 Fin pitch ...

Страница 13: ...Operating amp Ambient temp 25 C 5A Run capacitor µF VAC Crank case heater 240V 30W Type Propeller Q ty Dia mm 1 ø400 Fan motor model Q ty SMEN 19 TFB6055 1 Source 220 230 V 50 Hz No of poles rpm 220 V High 6 910 Nominal output W 43 Coil resistance Ambient temp 20 C Ω WHT BRN 77 7 WHT YEL 366 WHT PNK 211 Safety Type Internal type devices Operating temp Open C 130 5 Close Automatic reclosing Run cap...

Страница 14: ...ating 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 capacit...

Страница 15: ...5 0 3 Thermistor Coil sensor DTN TKS131B Resistance kΩ 0 C 15 0 2 Transformer TR ATR J105 Rating Primary AC 230V 50 60Hz Secondary 19V 0 526A Capacity 10VA Coil resistance Ω at 21 C Primary WHT WHT 205 10 Secondary BRN BRN 2 0 10 Thermal cut off temp 150 C Indoor Unit MCAV180C5VAA MCAV220C5VAA ...

Страница 16: ...25 C 5 0 4 50 C 1 8 4 Thermistor Coil sensor TH1 PBC 41E S14 Resistance kΩ 20 C 40 1 5 20 C 6 5 5 10 C 24 4 5 30 C 4 4 5 0 C 15 3 5 40 C 3 0 5 10 C 9 9 5 50 C 2 1 5 Transformer TR ATR H85 Rating Primary AC 230V 50 60Hz Secondary 11V 0 727A Capacity 8VA Coil resistance Ω at 21 C Primary WHT WHT 214 10 Secondary BRN BRN 1 58 10 Thermal cut off temp 145 C 2A 250V ...

Страница 17: ... AC 400V 1A Operation Positive phase ON Negative phase OFF Electro Magnetic Contactor MG HOE 10TB TH 5A Magnetic contactor Coil rating AC 220 240V 50Hz AC 240 260V 60Hz Coil resistance Ω at 25 C 1 260 10 Contact rating Main AC 440V 8A Thermal relay Overcurrent relay Operating amperes 5A 14 MQT5S 27YZJ ...

Страница 18: ... 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 GR220C7TAA 15 ...

Страница 19: ... Unit MCAV180C5VAA MCAV220C5VAA 285 45 995 45 147 5 147 5 206 3 Remote control unit Center of tubing hole 2 places Narrow tube ø6 35 1 4 Drain hose ø18 Wide tube ø12 7 1 2 MCAV180 Wide tube ø15 88 5 8 MCAV220 61 18 5 172 5 Unit mm ...

Страница 20: ...180C5TAA KPAV220C5TAA 86 74 74 Center of tubing hole ø75 4 places Wide tube ø12 7 1 2 Narrow tube ø6 35 1 4 Drain hose ø26 74 74 900 86 41 41 190 680 Wide tube ø15 88 5 8 KPAV180 KPAV220 Dimensions mm 17 61 18 5 172 5 ...

Страница 21: ...18 Outdoor Unit GR180C7TAA Air discharge Air intake 538 146 307 337 4 ø12 holes 830 19 630 305 61 95 Wide tube service valve ø12 7 1 2 Narrow tube service valve ø6 35 1 4 Unit mm ...

Страница 22: ...R220C7TAA Wide tube service valve ø15 88 5 8 Narrow tube service valve ø6 35 1 4 Check port ø6 35 1 4 86 88 155 57 73 86 229 285 835 620 130 100 55 20 20 325 850 250 250 560 6 ø3 1 holes Air intake Air discharge Unit mm ...

Страница 23: ...it GR225C7VAA Insulation of Refrigerant Tubing Because capillary tubing is used in the outdoor unit both the wide and narrow tubes of this air conditioner become cold To prevent heat loss and wet floors due to dripping of condensation both tubes must be well insulated with a proper insulation material The thickness of the insulation should be a min 8 mm After a tube has been insulated never try to...

Страница 24: ...tance m Axis air velocity m s Vertical distance m Room air temp 27 C Fan speed High 0 1 2 3 4 0 1 2 3 4 5 6 7 8 9 Flap angle 0 Axis air velocity 0 Flap angle 30 Axis air velocity 30 0 1 2 3 4 0 1 2 3 4 5 6 7 8 9 Flap angle 0 Axis air velocity 0 Flap angle 30 Axis air velocity 30 21 Indoor Unit MCAV180C5VAA Indoor Unit MCAV220C5VAA 5 PERFORMANCE DATA ...

Страница 25: ... 4 Horizontal distance m Horizontal distance m Axis air verocity m s Vertical distance m Axis air verocity m s Vertical distance m Room air temp 27 C Fan speed High Axis air verocity Flap angle 60 45 Axis air verocity Flap angle 45 30 Floor mounted Ceiling mounted AIR FLOW CHART ...

Страница 26: ...1 0 2 3 4 Horizontal distance m Horizontal distance m Axis air verocity m s Vertical distance m Axis air verocity m s Vertical distance m Room air temp 27 C Fan speed High Axis air verocity Flap angle 60 45 Axis air verocity Flap angle 45 30 Floor mounted Ceiling mounted ...

Страница 27: ...6 2 15 2 33 21 SHC 2 33 2 26 2 15 2 02 1 87 23 SHC 2 74 2 67 2 57 2 44 2 29 19 25 SHC 3 14 3 08 2 97 2 85 2 70 27 SHC 3 55 3 49 3 39 3 26 3 11 29 SHC 3 94 3 90 3 79 3 68 3 52 31 SHC 4 36 4 31 4 21 4 08 3 93 TC 5 65 5 45 5 20 4 88 4 50 CM 1 77 1 88 2 02 2 21 2 40 23 SHC 2 30 2 23 2 12 1 99 1 84 21 25 SHC 2 70 2 63 2 54 2 41 2 26 27 SHC 3 11 3 05 2 94 2 82 2 66 29 SHC 3 50 3 45 3 36 3 23 3 08 31 SHC...

Страница 28: ...1 2 33 2 50 2 74 2 97 21 SHC 2 86 2 77 2 63 2 48 2 30 23 SHC 3 36 3 27 3 14 2 99 2 80 19 25 SHC 3 85 3 77 3 64 3 50 3 30 27 SHC 4 34 4 28 4 15 3 99 3 81 29 SHC 4 83 4 77 4 64 4 50 4 30 31 SHC 5 33 5 28 5 15 5 00 4 81 TC 6 91 6 68 6 37 5 97 5 50 CM 2 26 2 39 2 58 2 82 3 06 23 SHC 2 82 2 73 2 60 2 44 2 26 21 25 SHC 3 30 3 22 3 10 2 95 2 77 27 SHC 3 80 3 73 3 60 3 46 3 26 29 SHC 4 29 4 23 4 11 3 95 3...

Страница 29: ...73 1 83 1 96 2 15 2 33 21 SHC 2 33 2 26 2 15 2 02 1 87 23 SHC 2 74 2 67 2 57 2 44 2 29 19 25 SHC 3 14 3 08 2 97 2 85 2 70 27 SHC 3 55 3 49 3 39 3 26 3 11 29 SHC 3 94 3 90 3 79 3 68 3 52 31 SHC 4 36 4 31 4 21 4 08 3 93 TC 5 65 5 45 5 20 4 88 4 50 CM 1 77 1 88 2 02 2 21 2 40 23 SHC 2 30 2 23 2 12 1 99 1 84 21 25 SHC 2 70 2 63 2 54 2 41 2 26 27 SHC 3 11 3 05 2 94 2 82 2 66 29 SHC 3 50 3 45 3 36 3 23 ...

Страница 30: ...1 2 33 2 50 2 74 2 97 21 SHC 2 86 2 77 2 63 2 48 2 30 23 SHC 3 36 3 27 3 14 2 99 2 80 19 25 SHC 3 85 3 77 3 64 3 50 3 30 27 SHC 4 34 4 28 4 15 3 99 3 81 29 SHC 4 83 4 77 4 64 4 50 4 30 31 SHC 5 33 5 28 5 15 5 00 4 81 TC 6 91 6 68 6 37 5 97 5 50 CM 2 26 2 39 2 58 2 82 3 06 23 SHC 2 82 2 73 2 60 2 44 2 26 21 25 SHC 3 30 3 22 3 10 2 95 2 77 27 SHC 3 80 3 73 3 60 3 46 3 26 29 SHC 4 29 4 23 4 11 3 95 3...

Страница 31: ...ons Indoor Air Temperature 32 C D B 23 C W B Outdoor Air Temperature 43 C D B Indoor Unit MCAV220C5VAA Outdoor Unit GR220C7TAA Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compressor Performance at 230 V 50 Hz 400 V 3N 50Hz Rating Conditions Running Amps A 0 37 0 50 3 13 4 0 Power Input kW 0 070 0 093 1 96 1 96 Full Load Conditions Running Amps A 0 37 0 50 3 6 4 5 Power Input kW 0 07...

Страница 32: ...ad Conditions Running Amps A 0 33 0 40 3 77 4 5 Power Input kW 0 071 0 082 2 177 2 33 400 V 3N 50Hz Rating Conditions Indoor Air Temperature 27 C DB 19 C WB Outdoor Air Temperature 35 C DB Full Load Conditions Indoor Air Temperature 32 C DB 23 C WB Outdoor Air Temperature 43 C DB Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compressor Performance at 230 V 50Hz Rating Conditions Runni...

Страница 33: ...6 2 Electric Wiring Diagrams Indoor Unit KPAV180C5TAA WARNING To avoid electrical shock hazard be sure to disconnect power before checking servicing and or cleaning any electrical parts KPAV220C5TAA 30 ...

Страница 34: ...Indoor Unit MCAV180C5VAA MCAV220C5VAA 31 ...

Страница 35: ...L 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 Indoor Unit GR180C7TAA WARNING To avoid electrical shock hazard be sure to disconnect power before checking servicing and or cleaning any electrical parts GR220C7TAA TO INDOOR UNIT 32 ...

Страница 36: ...ll as unrestricted air flow around the unit Fig 1 install the unit within the maximum elevation difference H above or below the outdoor unit and within a total tubing length L from the outdoor unit as detailed Table 1 and Fig 2a Indoor Unit 15 cm min 15 cm min 15 cm min INDOOR UNIT Front View INDOOR UNIT Tubing length L OUTDOOR UNIT Elevation difference H Fig 2 Fig 2a Fig 1 WARNING Table 1 If tota...

Страница 37: ...bolts or equal to bolt down unit reducing vibration and noise Outdoor Unit Outdoor unit Hot air Heat source Exhaust fan Fig 3 Fig 3 Air intake Min 10 cm Air discharge Min 5 cm Min 40 cm Valve side Min 25 cm Top View Air intake Concrete or equal About 10 cm Min 10 cm Anchor bolts 4 pcs About 40 cm Fig 5 A Ground Obstacle Obstacle above Air discharge Fig 4 C Min 2 m Min 2 m Side View Fig 4c Required...

Страница 38: ... that position 3 After confirming correct operation use a screwdriver to screw the supplied special mounting screw into the wall Fig 6a 4 Hang the remote control unit from the mounting screw b Non removable mounting 1 Momentarily hold the remote control unit at the desired mounting position 2 Confirm that the air conditioner responds correctly when you press keys on the remote control from that po...

Страница 39: ...Each wire must be firmly connected No wire should be allowed to touch refrigerant tubing the compressor or any moving part To avoid the risk of electric shock each air conditioner unit must be grounded Be sure to connect the power supply line to the outdoor unit as shown in the wiring diagram The indoor unit draws its power from the outdoor unit WARNING WARNING CAUTION WIRING SYSTEM DIAGRAM Power ...

Страница 40: ...t pressure the control circuit has a built in 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 is equal to or below set temperature T C Comp...

Страница 41: ...or more and the temperature of the indoor heat exchange coil falls below 1 C the control circuit stops the compressor for at least 6 minutes The compressor does not start again until the temperature rises above 8 C or 6 minutes has elapsed ON ON ON ON OFF OFF Set speed More than 10 minutes 6 minutes T 1 C Indoor heat exch coil temp 1 C Compressor Indoor fan Room temp Thermo OFF Thermo ON Set temp ...

Страница 42: ...d wires and connectors in indoor and outdoor units Check that coating of lead wires is not damaged Check that lead wires and connectors are firmly connected Check that wiring is correct 39 WARNING Hazardous voltage can cause ELECTRIC SHOCK or DEATH Disconnect power or turn off circuit breaker before you start checking or servicing 1 Indoor unit Outdoor unit Inter unit wiring Power supply 380 V 400...

Страница 43: ...L2 L1 L3 Power supply Power supply wiring Inter unit wiring Circuit breaker Measure insulation resistance of electrical parts in outdoor unit NO NO Set circuit breaker to OFF Measure insulation resistance of electrical parts in indoor unit 1 Remove both power supply wires and inter unit wires from terminal plate in outdoor unit Measure insulation resistance of outdoor unit 2 Remove inter unit wire...

Страница 44: ...covery or contact power company YES NO OPERATION selector switch is set in ON position Set OPERATION selector switch to ON Switch Ass y or indoor PCB Ass y is defective Refer to Step C below Clean transmitter OK Try to run with another remote control unit First remote control unit is defective Check for residue buildup on transmitter of remote control unit Check for residue buildup on remote contr...

Страница 45: ...ch Ass y is defective OK Measure resistance of indoor fan motor winding FMI Measure resistance of outdoor fan motor winding FMO OK Measure resistance of flap motor winding FLP Measure resistance of either power relay or magnetic contactor MG If fuse has been blown Measure resistance of PTC thermistor PTC Replace the fuse Timer is turned ON Check to see if ON is displayed on remote control YES Pres...

Страница 46: ...ill does not run Remote control unit is defective Try to run using another remote control unit OK Measure coil resistance of power relay Check indoor PCB Ass y PR Check that MODE selector switch is not set at FAN If it is set at FAN Set to COOL Outdoor unit does not run when air conditioner is in following conditions During thermo OFF when the room temperature is below the set temperature During f...

Страница 47: ...ompressor motor internal protector 49C Temperature of compressor is abnormally high Refrigerant gas shortage YES YES Charge refrigerant gas Check compressor There is a possibility of locked rotor NO 90 or more of rated voltage NO It s operated Check compressor motor overcurrent relay 51C Clean heat exchanger or remove obstacles Check power supply voltage Voltage is abnormally low Outdoor heat exch...

Страница 48: ...bearings Remove foreign matter or repair Repair or replace Measure resistance of indoor fan motor winding Check fan motor capacitor Fan cannot be turned OK Check fan rotation Turn fan gently once or twice by hand Check fan casing foreign matter on inside Fan motor burnout or foreign matter in bearings Remove foreign matter or repair Repair or replace Measure resistance of indoor fan motor winding ...

Страница 49: ...ss y GR180C7TAA Only Measure resistance of primary and secondary winding TR2 If fuse blows Check fuse on outdoor PCB Ass y for continuity OK Measure resistance of primary winding of transformer TR2 OK Measure resistance of outdoor fan motor winding Outdoor PCB Ass y is defective F ...

Страница 50: ... outdoor unit SSR For GR180C7VAA Measure resistance of flap motor winding FLP Measure resistance of compressor motor winding 9 3 4 Only flap motor does not run 10 3 4 Only flap motor does not run 10 3 5 Function of outdoor fan speed control does not work properly 9 3 5 Function of outdoor fan speed control does not work properly 10 3 4 Only flap motor does not run 47 ...

Страница 51: ...nit are insulated Insulate both wide and narrow tubes separately and then tape together Measure temperature of suction and discharge air of air conditioner Charge refrigerant gas R22 Check for clogging of air filter Fan speed is set to LOW Clean filter Set fan speed to either HIGH or MEDIUM Review cooling load estimate if performance of air conditioner is normal Reduce cooling load or replace the ...

Страница 52: ...he air conditioner will be in the following conditions as the controller tries to detect extremely low room temperature In Cooling mode The air conditioner soon stops and will not start again Thermo OFF Neither outdoor fan nor compressor runs B Short When thermistor is short the air conditioner will be in the following conditions as the controller tries to detect extremely high room temperature In...

Страница 53: ...minum plate fin or copper tube with the lead clip of the insulation resistance tester and measure the resistance by placing a probe on each terminal screw where power supply lines are connected on the terminal plate Fig 2 10 1 4 Measurement of Insulation Resistance for Electrical Parts Disconnect the lead wires of the desired electric part from terminal plate capacitor etc Similarly disconnect the...

Страница 54: ...s 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 differ according to the capacity of the capacitor Fuse ...

Страница 55: ...ompletely 11 DISASSEMBLY PROCEDURE FOR INDOOR UNIT IMPORTANT Please Read Before Starting Safety precautions for servicing the CEILING MOUNTED indoor unit Center latch Air intake grille Metal clip Air intake grille Unit For Floor Installation Fig 1 Fig 2 Before attempting to replace heavy and bulky parts such as the evaporator and fan motor disconnect the indoor unit from the system and place it on...

Страница 56: ... Removal of Electrical Component Box 1 Remove the front screw with a screwdriver Fig 4 2 Slide the lid out and up Fig 4 3 Disconnect the wiring as necessary 4 Remove the 4 screws then pull out the electrical component box Fig 5 Side panel Tapping screws 4 10 mm Hook Hook Slot Screw Screw Electrical component box Screw Connectors Hazardous voltage can cause ELECTRIC SHOCK or DEATH Disconnect the po...

Страница 57: ...he direction of the arrow Fig 6 3 Remove the 2 screws to pull off the flap motor The arm and cam come off together with the motor Fig 7 11 5 Removing Evaporator Indoor Heat Exchange Coil 1 Remove the 7 screws used to mount the blades Fig 8 2 Lift the blades in the direction of the arrow Fig 8 Top panel Flap motor Screw Blade Arm Cam Screw Flap motor Screw Blades Fig 6 Fig 7 Fig 8 ...

Страница 58: ... is built into the drain pan Pull out the drain pan together with the evaporator in the direction of the arrow Fig 10 The foamed polystyrene drain pan is fragile DO NOT apply excessive force when removing it 8 The evaporator can be removed by sliding it out from the drain pan in the direction of the arrow Fig 11 Front panel Screw Plastic clamp Drain pan Screw Rubber cap Thermistor Drain hose Front...

Страница 59: ...l the fan casing out 3 Insert a hex wrench in the fan boss and turn it counterclockwise to loosen the centrifugal fan The fan can be removed by sliding it to the left Fig 14 4 Remove the 4 bolts to remove the fan motor from the frame Fig 15 Hook Hook Front fan casing Rear fan casing Hex wrench 3mm or 7 64 Centrifugal fan Bolts M6 Fan motor Frame Fig 12 Fig 13 Fig 14 Fig 15 ...

Страница 60: ...S A C olgiate olona printed in italy R D 28 Reyrieux BP 131 01601 Trévoux CEDEX France Tél 04 74 00 92 92 Fax 04 74 00 42 00 R C S Bourg en Bresse B 759 200 728 ...

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