Trouble shooting 5
OUTDOOR UNIT Error Method:
Indicate or Display:
Refer to error code table.
Detective Actuators:
Detective details:
Forecast of Cause :
Check Point 2 :
Check Point 3 :
4.89
77°F
(25°C)
6.10
68°F
(20°C)
7.679.7312.416.120.927.5Resistance Value (k )
59°F
(15°C)
50°F
(10°C)
41°F
(5°C)
32°F
(0°C)
23°F
(-5°C)
14°F
(-10°C)
Temperature
OKOK
OKOK
DC
3.95
86°F
(30°C)
THERMISTOR
(DISCHARGE)
THERMISTOR
(PIPE)
THERMISTOR
(OUTDOOR)
THERMISTOR
(COMPRESSOR)
THERMISTOR
(HEAT SINK)
BROWN
BLACK
BLACK
BLUE
BROWN
CN25 CN26 CN23 CN22 CN21
1 21 21 21 21 2
Outdoor Heat Exchanger Temperature
Thermistor Error
Outdoor Unit Main PCB Circuit
Heat Exchanger Temperature Thermistor
When Heat Exchanger Temperature Thermistor open or short-circuit is
detected at power ON or while running the compressor.
1. Connector connection failure 2.Thermistor failure 3. Main PCB failure
Check Point 1 : Check connection of Connector
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.
Check Point 2 : Remove connector and check Thermistor resistance value
Thermistor Characteristics (Approx. value)
If Thermistor is either open or shorted, replace it and reset the power.
Check Point 3 : Check voltage of Main PCB (DC5.0V)
Make sure circuit diagram of outdoor unit and check terminal voltage at Thermistor (DC5.0V)
If the voltage does not appear, replace Main PCB.
02-12
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