Service Manual

Compressor Thermistor Error

Compressor temperature thermistor

Compressor temperature thermistor short detected

Compressor thermistor open detected

1. Connector connection failure, open

2. Thermistor failure

3. Main PCB failure

Check Point 1 : Check the connector connection and cable open

Connector connection state check

Cable open check

Check Point 2 : Check the thermistor

Thermistor characteristics check (Disconnect the thermistor from the PCB and check.)

* For the thermistor characteristics, refer to the "Service Parts Information 14".

Check Point 3 : Check voltage of Main PCB (DC5.0V)

Main PCB (CN62:3-4) voltage value = 5V

Remove the thermistor from Main PCB, check the voltage.

Compressor temperature thermistor (CN62:3-4)

Indoor Unit : Operation LED 7 times Flash, Timer LED 2 Times Flash,

Economy LED Continuous Flash.

Outdoor Unit : E. 72. 1

Error Code : 72

If the voltage does not appear, replace Main PCB

, and execute

the check operation again.

02-35

Trouble shooting 18

Indicate or Display:

Detective Actuators:

Detective details:

OUTDOOR UNIT Error Method:

Forecast of Cause :

CN62

THERMISTOR

(COMP SHELL1)

THERMISTOR

(DIS.TEMP.1)

BLACK

1234