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Trouble shooting 20
OUTDOOR UNIT Error Method:
Discharge Thermistor Error
Detective Actuators:
Outdoor unit Main PCB
Discharge pipe temperature thermistor
Forecast of Cause :
1. Connector connection 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.
OK
OK
Check Point 2 : Remove connector and check thermistor resistance value
Thermistor characteristics (Approx. value)
Temperature
(°C )
Resistance value (k )
Temperature
(°C )
Resistance value (k )
If Thermistor is either open or shorted, replace it and reset the power.
OK
OK
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)
Thermistor
(Compressor temp.)
BROWN
3
3
CN64
2
2
BROWN
1
1
Thermistor
(Outdoor temp.)
BLUE
3
3
CN62
2
2
BLUE
1
1
Thermistor
(Heat exchanger)
BLACK
3
3
CN65
2
2
BLACK
1
1
Thermistor
(Discharge pipe)
BROWN
3
3
2
2
CN63
BROWN
1
1
If the voltage does not appear, replace Main PCB.
AMP Air Conditioning
Indicate or Display:
Indoor Unit :
Operation lamp: 7 times Flash,
Timer lamp
Detective details:
When Discharge pipe temperature thermistor open or short-circuit
is detected at power ON or while running the compressor.
2. Thermistor failure
-30
-20
-10
-5
1013.1
531.6
292.9
221.1
30
4
0
5
0
60
40.0
26.3
17.8
12.3
02-23
Wired Remote Controller :
ERROR CODE : [E : 71]
: 1 times Flash
3. Main PCB failure
0
5
1
0
1
168.6
129.8
100.9
79.1
7
0
8
0
9
0
100
8.7
6.3
4.6
3.4
www.ampair.co.uk | sales@ampair.co.uk
5
20
62.6
120
2.0
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Table of Contents
Troubleshooting
