Trouble shooting 23
OUTDOOR UNIT Error Method:
Indicate or Display:
Detective Actuators:
Detective details:
Forecast of Cause :
Check Point 2 :
Check Point 3 :
OKOK
OKOK
Heat sink thermistor error
Outdoor unit Main PCB
Heat sink temperature thermistor
When the heat sink 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
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.
02-26
THERMISTOR
(DISCHARGE)
THERMISTOR
(PIPE)
THERMISTOR
(OUTDOOR)
THERMISTOR
(HEAT SINK)
BROWN
BLACK
BLACK
BLUE
CN25 CN26 CN23 CN22 CN21
1 21 21 21 2
Refer to error code table.
THERMISTOR
(COMPRESSOR)
BROWN
1 2
40
Resistance Value (k )
3020100-10-30 -20Temperature(°C)
Resistance Value (k )
60
70 80 90 100
50
Temperature(°C)
92.3 49.2 27.5 16.1 9.7 6.1 3.9 2.6
1.8 1.2 0.9 0.6 0.5 0.4
Thermistor Characteristics (Approx. value)
If Thermistor is either open or shorted, replace it and reset the power.
To Next Page
Loading...
