AirStage AO54FJ, Service Manual

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Trouble shooting 22
OUTDOOR UNIT OUTDOOR UNIT Error Method: Error Method:
OUTDOOR TEMPERATURE
THERMISTOR ABNORMAL
Check Point 2 : Remove CN26, measure the thermistor resistance Check Point 2 : Remove CN26, measure the thermistor resistance
If its open or short, replace the thermistor and turn on the main power.
8.0
30
12.5
20
15.8
15
5.3
40
20.2 25.9 33.6 44.0 58.2 105 Resistance Value ( ) k
k
10 5 0 -5 -10 -20 Temperature ( )
1.8 2.5 3.6 Resistance Value ( )
70 60 50 Temperature ( )
P/No.
9703516078
(Outdoor temperature thermistor)
Check Point 3 : Check control PCB CN26 Voltage DC 5.0V Check Point 3 : Check control PCB CN26 Voltage DC 5.0V
If CN26 voltage can not be measured, replace Control PCB.
Thermistor characteristics (Approx)
Check Point 1 : Check Point 1 :
Checking wiring of Connector CN25 Checking wiring of Connector CN25
Loose connector
Incorrect wiring
Thermistor cable is cut off
When reworking on the loose connector, erroneous connection, keep the power shut off.
Indicate or Display: Indicate or Display:
Indoor Unit : Operation LED Flash Flash , , Timer LED 3 Times Blink 3 Times Blink
Swing LED 3 Times Blink 3 Times Blink
Outdoor Unit : LED1 Flash Flash , , LED3 11 11 Times Blink Times Blink
ERROR CODE: E:32
Detective Actuators: Detective Actuators:
Outdoor temperature thermistor
Open or Short
Detective details: Detective details:
When thermistor open or short detected during the compressor is in
operation, the compressor stops, indicates error and output the error
information to the network.
Forecast of Cause Forecast of Cause:
1. Connector wiring defective
2. Thermistor defective
3. Control PCB defective
06-26
HEX OUTLET TEMP THERMISTOR
HEX CENTER TEMP THERMISTOR
DC5V
CN21
CN22
CN24
CN25
CN26
YELLOW
BLUE
RED
RED
1
2
1
2
1
2
1
2
1
2
BROWN
BROWN
BLUE
BLUE
GREEN
GREEN
BLACK
BLACK
BLACK
BLACK
DISCHARGED TEMP THERMISTOR
SUCTION TEMP THERMISTOR
OUTDOOR TEMP THERMISTOR