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DIAGNOSIS AND SOLUTION (CONT)
Main Parts Check
1 Temperature sensor checking
Disconnect the temperature sensor from PCB, measure the resistance value with a tester.
Temperature Sensors:
S
Room temp. (T1) sensor,
S
Indoor coil temp. (T2) sensor,
S
Outdoor coil temp. (T3) sensor,
S
Outdoor ambient temp. (T4) sensor,
S
Compressor discharge temp. (T5) sensor.
S
Measure the resistance value of each winding by using the multi−meter.
Fig. 25 – Tester
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