Sanyo C4232, CL4232 service manual Service Procedures

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12. SERVICE PROCEDURES

(1)Troubleshooting

1)Check before and after Troubleshooting

Many problems may happen because of wiring or power supply problems, so you should check these areas first. Problems here can cause false results in some of the other tests, and so should be corrected first.

1Check power supply wiring

(a)Single-phase

Check that power supply wires are correctly connected to terminal No. 1 through No. 4 on the 4P terminal plate in the indoor unit and L1 and L2 on the 6P terminal in the outdoor unit.

2Check inter-unit wiring

Check that inter-unit control wiring (AC 230 - 208 V Line voltage) is cor- rectly connected between the indoor unit and outdoor unit.

Single-phase outdoor unit

 

Disconnect SW

 

 

(Field supply)

 

 

Indoor Unit

Outdoor Unit

 

B

 

 

1

 

1

 

2

 

2

 

G

Ground

G

 

 

 

Power supply

4

 

4

 

A

 

 

 

 

Inter-Unit

L1

 

 

Wiring

L2

 

 

(Line voltage)

 

 

 

 

 

 

G

Ground

 

 

 

 

Fig. 12

 

1089_M_I

3Check power supply

Check that voltage is within the specified range (±10 % of the rating).

Check that power is being supplied.

If the following troubleshooting must be done with power being supplied, be careful not to touch any uninsulated live part that can cause ELECTRIC SHOCK.

4Check the lead wires and connectors in indoor and outdoor units.

Check that the sheath of lead wires is not damaged.

Check that the lead wires are firmly connected at the terminal plate.

Check that the wiring is correct.

5Reference

Condition of general cooling operation (Thermo. ON) SWEEP .................. ON

Indoor fan speed .... HIGH

SM830078

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Contents TS4232 Indoor Unit Outdoor UnitXS4232 C4232 …In Moist or Uneven Locations Please Read Before Starting…In a Room Table of Contents Introduction Read Me First XS4232, TS4232 / CL4232 Operating RangeXS4232, TS4232 / C4232 Model No Indoor Unit XS4232 Outdoor Unit C4232 SpecificationsUnit Specifications Model No Indoor Unit XS4232 Outdoor Unit Cooling Low ambient control Major Component Specifications Indoor Unit Model No TS4232 Source Auto louver motorMajor Component Specifications Outdoor Unit Heat exchange Model No CL4232 SourceController P.C.B. Assy Float switch Other Component Specifications Indoor UnitModel No XS4232 Power Transformer Thermistor Coil sensorModel No TS4232 Power Transformer Model No C4232 Other Component Specifications Outdoor UnitPower Relay Thermostat Coil sensorModel No CL4232 Dimensional Data Indoor Unit XS4232Indoor Unit TS4232 19/32Outdoor Unit C4232, CL4232 Cooling Capacity Indoor Unit XS4232 Outdoor Unit C4232, CL4232208V / 1 phase / 60Hz Indoor Unit TS4232 Outdoor Unit C4232, CL4232 800 CFM 230V Performance ChartsOperating Current Indoor Unit XS4232 Outdoor Unit C4232 208VOperating Current Indoor Unit TS4232 Outdoor Unit C4232Operating Current Indoor Unit XS4232 Outdoor Unit CL4232 Operating Current Indoor Unit TS4232 Outdoor Unit CL4232 Low Pressure Suction Outdoor ambient temp. F C Indoor temp. F C 104 AIR Throw Distance Chart Model XS4232Refrigerant Flow Diagram Indoor Unit 4232 Type Outdoor Unit C4232, CL4232Installation Instructions Tubing LengthSelecting the Installation Site AvoidCase of multiple installations Wind Shield for CL Model Recommended outer dimensions of wind shield field supplyAir Discharge Chamber for Top Discharge GeneralOutdoor Unit C, CL models Single-phase 60 Hz, 208 / 230 Electrical Wiring General Precautions on WiringWiring System Diagram Electrical Data Indoor model TS4232 / Outdoor model C4232, CL4232Electric Wiring Diagram Electrical Wiring DiagramsSchematic Diagram 854-2-5268-593-00-0 TS3632 RY1~RY5 Diagram Compressor Motor Electric Wiring Diagram CL4232 Outdoor UnitFMO1 Room Temperature Control Processes and FunctionsFreeze Prevention Drain Pump ControlOutdoor Fan Speed Control C4232 Type CL4232 TypeService Procedures 1340XS Check remote control unit There is a possibility of short circuitTransformer in indoor unit Check Operation selector switch in the indoor unitCheck compressor motor protectors High pressure switch 63PH XS Type only Check. auxiliary relay Y or 2YCheck fuse on the P.C.B. Ass’y in the indoor unit Outdoor Unit does not Run Check Cool / FAN selector switch in the remote control unitCheck set temperature Check compressor motor magnetic contactor Check indoor unit P.C.B Check outdoor unit P.C.B CL3632 TypeSome Part does not Operate. A. Indoor fan does not run Indoor Unit does not RunIndoor fan and louver motor do not run Louver motor does not runOutdoor Fan does not Run Outdoor Fan does not Run for CL4232 Compressor does not RunPoor Cooling Excessive CoolingRoom temp. Sensor in the remote control unit is defective Operation of Major Electrical PartsPower Supply Wires Measurement of Insulation Resis- tance 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 unitMethod Used to Replace Fuse on PCB Ass’y Check for continuity using a multimeter as shown in FigContinuity of fuse on P.C.B. Ass’y Room temp. sensor KTEC-35Central Region

CL4232, C4232 specifications

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