Advertisement
Trouble shooting 26-1
OUTDOOR UNIT Error Method:
2-way Valve Thermistor Error
Detective Actuators:
Outdoor temperature thermistor
Forecast of Cause :
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
OK
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 8".
OK
Check Point 3 : Check voltage of Main PCB (DC5.0V)
Main PCB P6:1-2 voltage value =5V
Main PCB P6:5-6 voltage value =5V
Remove the thermistor from Main PCB, check the voltage.
THERMISTOR(VALVE)
2WV-A 3WV-A 2WV-B 3WV-B
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
P6
If the voltage does not appear, replace Main PCB,
and execute the check operation again.
Indicate or Display:
Error code : 76
Detective details:
Outdoor temperature thermistor short or open detected
02-27
Outdoor unit : No indication
DC
Advertisement
