Service Manual

Compressor Temp. Error
OK
OK
OK
OK
1. 3-way valve not opened
2. EEV defective, strainer clogged
3. Outdoor unit operation failure, foreign matter on heat exchanger
4. Compressor temperature thermistor failure
5. Insufficient refrigerant
Compressor temperature thermistor
Compressor temperature thermistor characteristics check
(Check by disconnecting thermistor from PCB)
* For the characteristics of the thermistor, refer to the "Service Par
ts Information 5.
Check Point 4 : Check the compressor temperature thermistor
Check Point 3 : Outdoor unit fan, heat exchanger chek
Check for foreign object at heat exchanger
Check if fan can be rotated by hand.
Motor check(PARTS INFORMATION 7)
Check Point 5 : Check the refrigerant amount
Leak check
Indoor Unit : Operation LED 10 times Flash, Timer LED 3 Times Flash,
Econom
y LED Continuous Flash.
Outdoor Unit : E. A3. 1
Error Code : A3
02-52
<Cooling operation>
OK
<Heating operation>
Check Point 1 : Check if 3-way valve(gas side) is open.
EEV (EEV2, indoor unit EEV) open?
Strainer clogging check (before and after EEV, ACM
oil return)
Refer to "Service Parts Information 3, 4".
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 3,4 ".
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" 233degF during compressor
operation""generated 2 times within 24 hours
Trouble shooting 35
Indicate or Display:
Detective Actuators:
Detective details:
OUTDOOR UNIT Error Method:
Forecast of Cause :