Troubleshooting 11
OUTDOOR UNIT Error Method:
Detective actuators:
Detective details:
Forecast of cause :
Check Point 2 :
Check Point 3 :
OK
OK
OK
OK
Discharge thermistor error
Outdoor unit main PCB
Discharge pipe temperature thermistor
When Discharge pipe 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.
02-15
THERMISTOR
(PIPE)
THERMISTOR
(DISCHARGE)
THERMISTOR
(OUTDOOR)
BLACK
BLACK
BLACK
BLACK
BLACK
BLACK
1
2
3
4
1
2
3
4
1
2
3
1
2
3
P1
P5
64.22
102.5
130.9
168.6
218.6
286.3
Resistance Value (k )
Temperature
41.33
1.956
3.430
4.639
6.375
8.909
Resistance Value (k )
Temperature
90°C
80°C
70°C
27.26
40°C
18.40
50°C
12.68
60°C
30°C
100°C
2.573
110°C
5°C
0°C
-5°C
-10°C
20°C
10°C
120°C
