Compressor 1 Tempreture Abnormal - Fujitsu Airstage V-II Service Manual

Trouble shooting 54
OUTDOOR UNIT Error Method:

Compressor 1 Tempreture Abnormal

Detective Actuators:
Compressor temperature thermistor 1
Forecast of Cause : 1. 3-way valve not opened
2. EEV defective, strainer clogged
3. Outdoor unit operation defective, foreign matter on heat exchanger
4. Compressor 1 temperature thermistor defective
5. Insufficient refrigerant
<Cooling operation>
Check Point 1 : Check if 3-way valve(gas side) is open.
If the 3-way valve(gas side) was closed, open the
3-way valve(gas side) and check operation.
OK
Check Point 2 : Check the EEV, strainer
EEV (EEV2, indoor unit EEV) open?
Strainer clogging check (before and after EEV, ACM
oil return)
Refer to "Service Parts Information 14, 16".
OK
Check Point 3 : Outdoor unit fan, heat exchanger chek
Check for foreign matter at heat exchanger
Check if fan can be rotated by hand.
Motor check
OK
Check Point 4 : Check the compressor 1 temperature thermistor
Compressor 1 temperature thermistor characteristics check
(Check by disconnecting thermistor from PCB)
* For the characteristics of the thermistor, refer to the "Service Parts Information 22.
OK
Check Point 5 : Check the refrigerant amount
Leak check
After fixing the problem and for canceling the Error, Error Reset (F3-40) will be required after power reset
Indicate or Display:
Outdoor Unit : E. A3. 1
Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash,
Filter LED Continuous Flash.
Error Code : A3
Detective details:
"Protection stop by "compressor 1 tempreture"
operation""generated 2 times within 40 minutes
<Heating operation>
Check Point 1 : Check if 3-way valve(liquid side) is open.
If the 3-way valve(liquid side) was closed, open the
3-way valve(liquid side) and check operation.
Check Point 2 : Check the EEV, strainer
EEV (EEV1, EEV2) open?
Strainer clogging check (before and after EEV, ACM
oil return)
Refer to "Service Parts Information 15, 16".
OK
04-62
112 during compressor 1
OK