Trouble shooting 14
OUTDOOR UNIT Error Method:
Indicate or Display:
Detective Actuators:
Detective details:
Forecast of Cause :
OK
OK
OK
OK
12.5
15.7
5
20.0
25.6
32.9
42.8
56.1
98.9
Resistance value (k )
0
-5
-10
-20
Temperature (°C )
10
20
15
1.74
2.48
3.59
5.31
8.05
Resistance value (k )
70
60
50
40
30
Temperature (°C )
Outdoor Thermistor Error
Outdoor Unit Main PCB
Outdoor Temperature Thermistor
When Outdoor 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 if connector is 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.
02-16
Refer to error code table.
BLACK
BLACK
BROWN
BROWN
BROWN
BROWN
BLUE
BLUE
C
N
64
C
N
62
C
N
65
C
N
63
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
THERMISTOR
( DISCHARGE PIPE )
THERMISTOR
( HEAT EXCHANGER )
THERMISTOR
( OUTDOOR TEMP. )
THERMISTOR
( COMPRESSOR TEMP. )
Temperature (°F ) -4 14 23 32 41 50 59 68
Temperature (°F ) 86 104 122 140 158
