Sanyo C1852, XS1852, CL1852 service manual Check fuse on the P.C.B. Ass’y in the indoor unit, Fmi

Page 34

11. SERVICE PROCEDURES

F.Check indoor fan motor thermal protector (49FMI)

• Disconnect the socket from 9P (WHT) connector.

• Check the continuity between No. 8 and No.9 poles of the 9P socket.

No continuity.

The thermal protector (49FMI)

 

 

 

 

 

 

 

is operated.

 

 

 

 

 

 

 

 

 

 

Check fan casing

 

 

 

 

 

 

Fan cannot

 

 

 

 

Remove foreign

 

 

 

 

 

for foreign matter

 

 

• Check fan rotation.

 

 

 

 

 

 

matter or repair.

be rotated.

 

 

on the inside.

 

 

Rotate the fan gently once

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

or twice by hand.

 

 

 

 

 

 

 

 

 

 

Fan motor burnout

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OK

 

 

 

or foreign matter

 

 

Repair or replace.

 

 

 

 

 

 

 

 

 

 

in bearing.

 

 

 

• Check fan motor capacitor.

 

 

 

 

 

 

0621_X_S

 

 

 

 

 

 

 

 

 

 

G. Check fuse on the P.C.B. Ass’y in the indoor unit.

Check fuse on the P.C.B. Ass'y in the indoor unit for continuity.

When the fuse blows.

Check transformer. (TR1)

OK

Check resistance of indoor fan motor winding.

(FMI)

OK

• Check resistance of louver

motor winding.

(LM)

• Check resistance of drain

pump winding.

(DP)

 

 

 

 

OK

 

Check coil of compressor motor magnetic contactor.

(PR)

OK

• P.C.B. Ass'y is defective.

OK

1895_X_S

SM830079

– 34 –

Image 34
Contents Technical Data Indoor Unit Outdoor Unit XS1852 C1852Please Read Before Starting If Necessary, Get HelpTable of Contents Introduction Read Me First XS1852 / C1852 Operating RangeXS1852 / CL1852 Specifications Unit SpecificationsData Subject to Change Without Notice Major Component Specifications Indoor Unit Fan motorMajor Component Specifications Outdoor Unit CompressorOther Component Specifications Indoor Unit Model No XS1852 Power TransformerOther Component Specifications Outdoor Unit Model No CL1852Dimensional Data Indoor Unit XS1852Outdoor Unit C1852, CL1852 Performance Charts 230VAIR Throw Distance Chart Model XS1852Insulation of Refrigerant Tubing Refrigerant Flow DiagramTo prevent heat loss and wet floors due to dripping Installation Instructions Tubing LengthSelecting the Installation Site AvoidChoose a place that is well ventilated ÃInstall the outdoor unitBaffle Plates for the Outdoor Unit CL×× models only Electrical Wiring General Precautions on Wiring Wiring System Diagram ModelsElectrical Data Electric Wiring Diagram Electrical Wiring DiagramsSchematic Diagram Outdoor Unit C1852 Outdoor Unit CL1852 Room Temperature Control Processes and FunctionsFreeze Prevention Drain Pump ControlMedium Service Procedures 1334XS Check remote control unit There is a possibility of short circuitTransformer in indoor unit Check Operation selector switch in the indoor unitCheck. auxiliary relay Check fuse on the P.C.B. Ass’y in the indoor unit FMICheck set temperature Check Cool / FAN selector switch in the remote control unitOutdoor Unit does not Run Check float switch Refer to 11 Drain Pump Control Check compressor motor magnetic contactorSome Part does not Operate Indoor Unit does not RunIndoor fan and louver motor do not run Indoor fan does not runOutdoor Fan does not Run for CL1852 Outdoor Fan does not RunCompressor does not Run Poor Cooling Excessive CoolingRoom temp. Sensor in the remote control unit is defective Operation of Major Electrical PartsPower Supply Wires Measurement of Insulation Re- sistance for Electrical partsChecking the Protective Devices Compressor motor thermal protector . . . . . . Outdoor unitIndoor fan motor FMI Indoor unit Measure the coil resistance Motor capacitor Both in indoor and outdoor unitContinuity of fuse on P.C.B. Ass’y Thermistor Characteristic CurveMethod Used to Replace Fuse on PCB Ass’y Central Region
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XS1852, CL1852, C1852 specifications

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