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39

10-6. Removing Fan and Fan Motor

(1) Unlatch the 2 hooks on each side to take off the

front fan casing. (Fig. 12)

(2) Remove the 2 screws attaching the rear fan casing

and then pull 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

Summary of Contents for AE512SC

Page 1: ...FC512CL AE512SC FC512CL AE512SCL 7 1 6 59 0 18 63 7 6 67 0 5 21 7 21 5 0 8180 029 0 05 99 ...

Page 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 unit s weight It may be necessary to construct a st...

Page 3: ...l 22 8 TROUBLESHOOTING 8 1 Check before and after troubleshooting 23 8 2 Air conditioner does not operate 24 8 3 Some part of air conditioner does not operate 28 8 4 Air conditioner operates but abnormalities are observed 31 8 5 If a sensor is defective 32 9 CHECKING ELECTRICAL COMPONENTS 9 1 Measurement of Insulation Resistance 33 9 2 Checking Continuity of Fuse on PCB Ass y 34 9 3 Checking Motor...

Page 4: ...oling Maximum 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 Temperature Indoor Air Intake Temp Outdoor Air Intake Temp Cooling Maximum 32 C D B 23 C W B 43 C D B Minimum 19 C D B 14 C W B 15 C D B For COOLING ONLY model AE512SC For LOW AMBIENT cooling model AE512SCL ...

Page 5: ... direction Indoor Horizontal Manual Vertical Auto Air filter Washable Anti Mold Compressor Rotary Hermetic Refrigerant Amount charged at shipment g R22 900 Refrigerant control Capillary tube Operation sound Indoor Hi Me Lo dB A 44 40 35 Outdoor Hi dB A 48 Refrigerant tubing connections Flare type Max allowable tubing length at shipment m 7 5 Refrigerant Narrow tube mm in 6 35 1 4 tube diameter Wid...

Page 6: ...r Horizontal Manual Vertical Auto Air filter Washable Anti Mold Compressor Rotary Hermetic Refrigerant Amount charged at shipment g R407C 900 Refrigerant control Capillary tube Operation sound Indoor Hi Me Lo dB A 44 40 35 Outdoor Hi dB A 48 Refrigerant tubing connections Flare type Max allowable tubing length at shipment m 7 5 Refrigerant Narrow tube mm in 6 35 1 4 tube diameter Wide tube mm in 1...

Page 7: ...4 1 160 Nominal output W 20 Coil resistance Ambient temp 20 C Ω GRY WHT 311 7 WHT VLT 97 6 7 VLT YEL 97 6 7 WHT PNK 425 7 Safety devices Type Internal protector Operating temp Open C 145 5 Close Automatic reclosing Run capacitor µF 1 5 VAC 440 Flap Motor 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 Heat...

Page 8: ...mp 25 C Trip in 6 to 16 sec at 21A Run capacitor µF 25 0 VAC 400 Crank case heater Fan Fan Motor Type Propeller Q ty Dia 1 ø400 Fan motor model Q ty K35610 M01402 1 No of poles rpm 230 V High 6 760 Nominal output W 20 Coil resistance Ambient temp 20 C Ω BRN WHT 256 7 YEL WHT 227 7 PNK YEL 103 7 Safety devices Type Internal protector Operating temp Open C 150 10 Close C Automatic reclosing Run capa...

Page 9: ...5 Operating amp Ambient temp 25 C Trip in 6 to 16 sec at 21A Run capacitor µF 25 0 VAC 400 Crank case heater 240 V 20 W Fan Fan Motor Type Propeller Q ty Dia 1 ø400 Fan motor model Q ty UE6T 21H5P S 1 No of poles rpm 230 V High 6 770 Nominal output W 20 Coil resistance Ambient temp 20 C Ω WHT BRN 264 5 WHT VLT 227 9 VLT YEL 22 53 YEL PNK 42 37 Safety devices Type Internal fuse Operating temp Open ...

Page 10: ...y 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 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 Thermistor Room sensor TH2 KTEC 35 S6 Resistance kΩ 10 C 10 0 4 30 C 4 0 4 15 C 7 9 4 35 C 3 3 4 20 C 6 3 4 40 C 2 7 4 25...

Page 11: ...0 C 2 1 5 Power Relay PR G7L 2A TUB Coil rating AC 200 240V 50 60Hz Coil resistance Ω at 23 C 21 15 Contact rating AC 220V 25A Transformer TR2 ATR J65 Rating Primary AC 230V 50Hz Secondary 19V 0 315A Capacity 6VA Coil resistance Ω at 22 C Primary WHT WHT 455 10 Secondary BRN BRN 2 85 10 Thermal cut off temp 145 C Outdoor Unit AE512SCL ...

Page 12: ...DIMENSIONAL DATA Indoor Unit FC512CL Remote control unit 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 18 5 61 172 5 Unit mm ...

Page 13: ...10 Outdoor Unit AE512SC 276 4 ø12 holes 312 Air intake Air discharge 608 60 530 380 88 17 750 380 273 4 ø3 3 holes 270 61 93 Wide tube service valve ø12 7 1 2 Narrow tube service valve ø6 35 1 4 Unit mm ...

Page 14: ...Unit AE512SCL 276 4 ø12 holes 312 Air intake Air discharge 608 60 530 380 88 17 750 380 273 4 ø3 3 holes Check port ø6 35 1 4 270 61 93 Wide tube service valve ø12 7 1 2 Narrow tube service valve ø6 35 1 4 Unit mm ...

Page 15: ...ss of the insulation should be a min 8 mm After a tube has been insulated never try to bend it into a narrow curve because it can cause the tube to break or crack IMPORTANT CAUTION Wide tube Thickness Min 8 mm Insulation Narrow tube Thickness Min 8 mm Capillary tube Compressor Accumulator Wide tube service valve Wide tube O D ø12 7 mm 1 2 Narrow tube service valve Narrow tube O D ø6 35 mm 1 4 Cond...

Page 16: ...1 10 9 8 7 6 5 4 3 25 30 35 40 45 50 Outdoor inlet air D B temp C Operating current A 12 Low pressure at wide tube service valve kg cm 2 G 32 27 21 32 27 21 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 Outdoor air temperature 35 C D B 24 C W B NOTE Indoor Unit FC512CL Outdoor Unit AE512CL or AE512SCL...

Page 17: ...7 3 4 2 1 0 1 0 2 3 4 Horizontal distance m Horizontal distance m Axis air velocity m s Vertical distance m Axis air velocity 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 ...

Page 18: ...C 3 78 3 62 3 45 3 29 3 09 2 85 TC 4 03 3 85 3 68 3 50 3 29 3 03 CM 0 97 1 05 1 12 1 20 1 30 1 40 21 SHC 1 77 1 69 1 62 1 55 1 46 1 36 19 23 SHC 2 11 2 04 1 97 1 89 1 81 1 71 25 SHC 2 46 2 39 2 31 2 24 2 16 2 05 27 SHC 2 81 2 73 2 66 2 59 2 50 2 40 29 SHC 3 15 3 08 3 01 2 93 2 85 2 74 31 SHC 3 50 3 42 3 35 3 28 3 19 3 03 TC 4 27 4 08 3 90 3 71 3 49 3 21 CM 1 00 1 08 1 15 1 24 1 34 1 44 23 SHC 1 74...

Page 19: ...nditions Indoor Air Temperature 32 C D B 23 C W B Outdoor Air Temperature 43 C D B Indoor Unit FC512CL Outdoor Unit AE512SCL Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compressor Performance at 220 240V 50Hz Rating Conditions Running Amps A 0 28 0 29 0 30 0 32 5 4 5 5 6 0 6 1 Power Input kW 0 060 0 070 0 066 0 076 1 14 1 20 1 27 1 35 Full Load Conditions Running Amps A 0 28 0 29 0 ...

Page 20: ...17 6 2 Electric Wiring Diagrams To avoid electrical shock hazard be sure to disconnect power before checking servicing and or cleaning any electrical parts WARNING Indoor Unit FC512CL ...

Page 21: ...18 To avoid electrical shock hazard be sure to disconnect power before checking servicing and or cleaning any electrical parts WARNING Outdoor Unit AE512SC ...

Page 22: ...19 To avoid electrical shock hazard be sure to disconnect power before checking servicing and or cleaning any electrical parts WARNING Outdoor Unit AE512SCL ...

Page 23: ...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...

Page 24: ...il 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 T C More than 10 minutes More than 6 minutes Set speed 21 ...

Page 25: ...vates to control the fan speed automatically If the outdoor temperature falls below 14 C the fan speed switches to MED If the outdoor temperature falls below 1 C the fan speed switches to LOW 22 Outdoor temperature 14 C 1 C Fan speed Fan motor output HIGH MEDIUM LOW 7 1 YEL BRN 3 1 WHT BRN 5 1 VLT BRN Line voltage 220 240V 1 2 1 Regardless of outdoor temperature outdoor fan motor operates at first...

Page 26: ...oltage is in specified range 10 of the rating Check that power is being supplied 8 1 4 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 firmly connected Check that wiring is correct Outdoor unit Indoor unit Power supply Single phase 220 240V 50Hz Ground Ground Inter unit power wiring Power plug Loca...

Page 27: ...stance of electrical parts in indoor unit 1 Remove 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 Then pull the power plug out of the wall outlet Measure insulation resistance of indoor unit Insulation of outdoor unit is defective Insulation of indoor unit is defective Set circuit break...

Page 28: ...1 YES NO OPERATION selector switch is set in ON position Set OPERATION selector switch to ON Indoor PCB Ass y is defective NO Check power supply Power is being supplied to the indoor unit Circuit breaker is tripped Power failure Reset breaker Wait for recovery or contact power company Replace with suitable one larger capacity NO Check capacity of circuit breaker Capacity of circuit breaker is suit...

Page 29: ...secondary winding of transformer TR Indoor PCB Ass y is defective OK OK Measure resistance of indoor and or outdoor fan motor winding FM Measure resistance of compressor motor winding CM OK Measure coil resistance of power relay in outdoor unit PR Replace the fuse If fuse has been blown OK Try to run with another remote control unit First remote control unit is defective Check for residue buildup ...

Page 30: ...oor unit OK Measure coil resistance of power relay Check indoor PCB Ass y PR OK NO Is room temperature too low Try to lower setting temperature by temperature setting button button Outdoor unit still does not run Remote control unit is defective Try to run using another remote control unit 27 ...

Page 31: ...urnout or foreign matter in bearings Remove foreign matter or repair Repair or replace Measure resistance of outdoor 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...

Page 32: ... y for AE512SCL Only 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 Measure resistance of primary and secondary winding TR2 29 ...

Page 33: ...r to 8 3 Outdoor Fan Speed Control Measure resistance of flap motor winding Check compressor motor capacitor Measure resistance of compressor motor winding Measure resistance of power relay PR NO YES YES Overload relay is working Either OLR T or OLR A YES Temperature of compressor is abnormally high Refrigerant gas shortage Charge refrigerant gas R22 Rotor may be locked up C1 Measure Power supply ...

Page 34: ...h approx 10 deg or more Possibility of gas shortage YES Check position of remote control unit Cool air from air conditioner reaches position directly Change position of remote control unit Wide and narrow tubes between indoor unit and outdoor unit are insulated Insulate both wide and narrow tubes separately and then tape together Measure temperature of suction and discharge air of air conditioner ...

Page 35: ...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 Co...

Page 36: ...ter and measure the resistance by placing a probe on each terminal screw on the terminal plate Fig 2 Note that the ground line terminal should be skipped for the check 9 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 connector Then measure the insulation resistance Figs ...

Page 37: ... 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 differ according to the cap...

Page 38: ...ompletely 10 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...

Page 39: ...val 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 Connectors Hazardous voltage can cause ELECTRIC SHOCK or DEATH Disconnect ...

Page 40: ...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 10 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 ...

Page 41: ... 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...

Page 42: ...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 ...

Page 43: ...21040 Oggiona con S Stefano VA Via Per Solbiate 49 Italy Direzione e Uffici Via Varese 90 21013 GALLARATE VA Tel 0331 755 111 Telex 331060 ARGO I FAX 0331 776 240 ...

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