Trouble shooting 34
OUTDOOR UNIT Error Method:
Compressor Temperature Error
Compressor temperature thermistor
Detective Actuators:
Detective details:
Indicate of Display:
<Cooling operation>
OK
<Heating operation>
Test 1 : Check if 3-way valve(gas side) is open.
Compressor thermistor characteristics check.
(Check by disconnecting thermistor from PCB.)
* For the characteristics of the thermistor, refer to the "Trouble shooting 21".
Test 4 : Check the compressor thermistor
Check for foreign object at heat exchanger
Test 5 : Check the refrigerant amount
Leak check
Test 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
EEV open?
Test 2 : Check the EEV, strainer
Test 2 : Check the EEV, strainer
Strainer clogging check
(SERVICE PARTS INFORMATION 3)
EEV open?
Strainer clogging check
(SERVICE PARTS INFORMATION 3)
If the 3-way valve(gas side) was closed, open the
3-way valve(gas side) and check operation.
Motor check (SERVICE PARTS INFORMATION 6)
Check if fan can be rotated by hand.
Test 3 : Check the outdoor unit fan,heat exchanger
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 6. Main PCB failure
=
Protection stop by Compressor temperature thermistor > 226.4°F(108°C)
during compressor operation generated 2 times within 24 hours.
Forecast of Cause:
02-38
Indoor Unit
Outdoor Unit
Operation lamp : 10 time Flash
ERROR CODE : [E : A3]
Timer lamp: 3 time Flash
Monitor
ABCDEF
110
: Light ON : Light OFF n : n time blinking
3
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