<Cooling operation>
OK
<Heating operation>
Test 1 : Check if 3-way valve(gas side) is open.
Discharger thermistor characteristics check.
(Check by disconnecting thermistor from PCB.)
*
For the characteristics of the thermistor, refer to the "Trouble shooting 25".
Test 4 : Check the discharge 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
1. 3-way valve not opened
2. EEV defective, strainer clogged
=
3. Outdoor unit operation failure, foreign matter on heat exchanger
4. Discharge temperature thermistor failure
5. Insufficient refrigerant
6. Main PCB failure
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
Trouble shooting 38
OUTDOOR UNIT Error Method:
Discharge Temperature Error
Outdoor unit main PCB
Discharge pipe temperature thermistor
Protection stop by Discharge pipe temperature thermistor > 110
°C
during compressor operation generated 2 times within 24 hours.
Detective Actuators:
Detective details:
Indicate of Display:
Forecast of Cause:
02-53
Indoor Unit
Outdoor Unit
Operation lamp : 10 time Flash
ERROR CODE : [E : A1]
Timer lamp
: 1 time Flash
Monitor
A
B
C
D
E
F
1
10
: Light ON
: Light OFF
n : n time blinking
1
