Service Manual

Heat exchanger liquid outlet thermistor

Heat exchanger liquid pipe thermistor short or open detected

1. Connector connection failur, 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 (CN63:1-2) voltage value = 5V

Remove the thermistor from Main PCB, check the voltage.

Indoor Unit : Operation LED 8 times Flash, Timer LED 3 Times Flash,

Economy LED Continuous Flash.

Outdoor Unit : E. 83. 1

Error Code : 83

If the voltage does not appear, replace Main PCB

and execute the check operation again.

02-42

Liquid Pipe Thermistor Error

Trouble shooting 25

Indicate or Display:

Detective Actuators:

Detective details:

OUTDOOR UNIT Error Method:

Forecast of Cause :

Heat exchanger liquid outlet thermistor (CN63:1-2)

CN63

THERMISTOR

(SC. GAS. OUT.)

(HEX. PIPE. OUT.)

BLACK

123

BLACK