Fujitsu AB*A12, Service Manual

Page: 114 / 322

Trouble shooting 14
OUTDOOR UNIT Error Method:
Compressor 2 Abnormal
(Constant Speed)
Indicate or Display:
Outdoor Unit : LED1 Flash, LED2
2 Time Blink
Indoor Unit : Operation LED Flash, Timer LED 3 Time Blinks,
ERROR CODE : E : 32
Detective Actuators:
Outdoor Unit Controller PCB circuit
Discharge Thermistor
Detective details:
Compressor 2 detects 5 times of cases that discharge temperature
does not rise to more than 5 °C within 10 minutes after start.
Check Point 2 : Check Magnet Relay
Check Point 3 : Check Compressor
If the symptom does not change with Check Point 1 and 2, a failure of
Constant speed Compressor can be suspected. (PARTS INFORMATION 1,2)
OK
OK
Check Point 1 : Check Discharge Thermistor
p
Check if other type of thermistor is wrongly installed.
p
Check if the thermistor is removed from the holder.
p
Check if the cable of the thermistor is pinched.
>>Check characteristics of Thermistor (Refer to Trouble shooting 22, 23, 24)
If defective, replace the thermistor.
Forecast of Cause :
1. Discharge Thermistor mis-installed 2. Magnet Relay failure 3. Constant speed Compressor failure
p
Check if the connector between Magnet Relay and PCB is loose.
p
Check if the connector between Magnet Relay and PCB is reversed.
p
Check the operation by pressing the Magnet Relay.
>>If it does not operate, check if it is corrected by replacing with other magnet
relay, and if it operates, replace the Magnet Relay.
06-23
Swing LED 3 Time Blinks
When Discharge temp protection operates 3 times within 40 minutes,
the compressor stops permanently.
[ CHECK 1 ]