Trouble shooting 5
INDOOR UNIT
INDOOR UNIT Error Method:
Detective Actuators:
Detective details:
Forecast of Cause :
Check Point 1 : Check connection of Connector
Indoor room thermistor error
Indoor unit Controller PCB
Room temperature thermistor
When Room Temperature Thermistor open or short-circuit is detected.
1. Connector connection failure 2.Thermistor failure 3. Controller PCB failure
Check if connector is removed.
Check erroneous connection.
Check if thermistor cable is open.
>>Upon correcting the removed connector or mis-wiring, reset the power.
02-08
Indicate or Display:
Refer to error code table.
Check Point 2 : Check Point 2 : Check the voltage value between the terminals at Thermistor
OK
Thermistor Characteristics (Approx. value)
If the voltage does not appear, replace Controller PCB.
THERMISTOR
(PIPE)
GRAY
CN3
1
2
1
2
GRAY
THERMISTOR
(ROOM TEMP.)
CN1
1
2
BLACK
BLACK
Check Voltage at CN1 (terminal 1-2) of Controller PCB.
2.502.783.063.343.613.854.074.27
Voltage value (V)
Voltage value (V)
Temperature
1.731.97
Temperature
77°F 68°F59°F50°F41°F32°F23°F14°F
104°F
1.52
113°F95°F
2.23
86°F
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