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Trouble shooting 8
OUTDOOR UNIT Error Method:
Outdoor Discharge Pipe Temperature
Sensor Error
Detective Actuators:
Outdoor Unit Main PCB Circuit
Discharge Pipe Temperature Thermistor
Forecast of Cause :
1. Connector connection 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.
OK
OK
Check Point 2 : Remove connector and check Thermistor resistance value
Check Point 2 :
Thermistor Characteristics (Approx. value)
Temperature
Resistance Value (k )
Temperature
Resistance Value (k )
If Thermistor is either open or shorted, replace it and reset the power.
OK
OK
Check Point 3 :
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)
3 2 1
3 2 1
3 2 1
3 2 1
CN64
CN62
If the voltage does not appear, replace Main PCB.
Indicate or Display:
Indoor Unit : Operation LED: 3 times blink, Timer LED: 2 times blink,
Outdoor Unit : LED 0.1sec ON/ 0.1sec OFF
ERROR CODE : E : 0C
Detective details:
When Discharge Pipe Temperature Thermistor open or short-circuit
is detected at power ON or while running the compressor.
2.Thermistor failure
0°C
5°C
10°C
15°C
169
130
101
79.1
70°C
80°C
90°C
100°C
8.70
6.27
4.60
3.43
3 2 1
3 2 1
3 2 1
3 2 1
CN65
CN63
Filter LED
: OFF
3. Main PCB failure
20°C
30°C
40°C
62.6
40.0
26.3
120°C
140°C
2.00
1.22
07-12
50°C
60°C
17.8
12.3
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