Heat exchanger liquid temperature
thermistor
Heat exchanger outlet temperature thermistor short or open detected
1. Connector connection defective, open
2. Thermistor failure
3. Main PCB failure
OK
OK
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.
Heat exchanger outlet temperature thermistor (CN63:1-2)
Indoor Unit : Operation LED 7 times Flash, Timer LED 3 Times Flash,
Economy LED Continuous Flash.
Outdoor Unit : E. 73. 3
Error Code : 73
If the voltage does not appear, replace Main PCB, and execute
the check operation again.
If the voltage does not appear,
Outdoor Unit Heat Ex. Outlet Temp.
Thermistor Error
Trouble shooting 19
Indicate or Display:
Detective Actuators:
Detective details:
OUTDOOR UNIT Error Method:
Forecast of Cause :
5
5
02-35
To Next Page
Loading...
Need help?
General
