Outdoor Temp Sensor Error<TH3>
OK
DC
CN144
(OUT TEMP.)
< TH3 >
THERMISTOR
1 2 3
1 2 3
BLACK
BLACK
Outdoor temperature thermistor
Outdoor temperature thermistor short or open detected
1. Connector connection defective, open
2. Thermistor defective
3. Main PCB defective
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 17".
Check Point 3 : Check voltage of Main PCB (DC5.0V)
Main PCB (CN144:1-3) voltage value = 5V
Remove the thermistor from Main PCB, check the voltage.
Outdoor temperature sensor (CN144:1-3)
Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash,
Filter LED Continuous Flash.
Outdoor Unit : E. 74. 1
Error Code : 74
If the voltage does not appear, replace Main PCB and set up orignal address.If the voltage does not appear, replace Main PCB and set up orignal address.
Trouble shooting 44
Indicate or Display:
Detective Actuators:
Detective details:
OUTDOOR UNIT Error Method:
Forecast of Cause :
E. 74.1
04-52
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