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Suction Gas Thermistor Error

CN66

BLACK

BLA

1 2 3

Suction gas temperature thermistor

Suction gas temperature thermistor short or open detected

1. Connector connection defective, open

2. Thermistor failure3. 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 5".

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

Main PCB (CN66:1-3) voltage value = 5V

Remove the thermistor from Main PCB, check the voltage.

Suction gas temperature thermistor (CN66:1-3)

Indoor Unit : Operation LED 7 times Flash, Timer LED 5 Times Flash,

Economy LED Continuous Flash.

Outdoor Unit : E. 75. 1

Error Code : 75

If the voltage does not appear, replace Main PCB, and execute

the check operation.

THERMISTOR

(SUC. TEMP)

Trouble shooting 21

Indicate or Display:

Detective Actuators:

Detective details:

OUTDOOR UNIT Error Method:

Forecast of Cause :

02-37

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