AirStage ARXB07LALH, Service Manual

Page: 116 / 207

Compressor Tempreture Abnormal
OK
OK
OK
OK
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
Compressor 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.
Check Point 4 : Check the compressor 1 temperature thermistor
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
Check Point 5 : Check the refrigerant amount
Leak check
Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash,
Filter LED Continuous Flash.
Outdoor Unit : E. A3. 1
Error Code : A3
04-52
<Cooling operation>
OK
<Heating operation>
Check Point 1 : Check if 3-way valve(gas side) is open.
EEV (EEV1, EEV2, indoor unit EEV) open?
Strainer clogging check (before and after EEV, 3Way Valve
oil return)
Refer to "Service Parts Information 14, 15,16".
Check Point 2 : Check the EEV, strainer
EEV (EEV1, EEV2) open?
Strainer clogging check (before and after EEV, 3 Way Valve
oil return)
Refer to "Service Parts Information 15, 16".
Check Point 2 : Check the EEV, strainer
If the 3-way valve(gas side) was closed, open the
3-way valve(gas side) and check 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.
OK
"Protection stop by "compressor tempreture" 110 during compressor
operation""generated 2 times within 40 minutes
Trouble shooting 42
Indicate or Display:
Detective Actuators:
Detective details:
OUTDOOR UNIT Error Method:
Forecast of Cause :