Service Manual

Outdoor Thermistor Error

CN61

(OUT TEMP.)

THERMISTOR

123

BLACK

Outdoor temperature thermistor

Outdoor temperature thermistor short or open detected

1. Connector connection defective, 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

5".

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

Main PCB (CN61:1-3) voltage value = 5V

Remove the thermistor from Main PCB, check the voltage.

Outdoor temperature thermistor (CN61:1-3)

Indoor Unit : Operation LED 7 times Flash, Timer LED 4 Times Flash,

Economy LED Continuous Flash.

Outdoor Unit : E. 74. 1

Error Code : 74

If the voltage does not appear, replace Main PCB

, and execute

the check operation again.

If the voltage does not appear, replace Main PCB

02-37

Trouble shooting 20

Indicate or Display:

Detective Actuators:

Detective details:

OUTDOOR UNIT Error Method:

Forecast of Cause :