Section 11: Fault Finding Page 55
11.4 Error Codes
Error
code
Error Method of check Troubleshooting
Figure/
table
Error
reset
- -
Power supply Check the power supply Confirm the power supply -
-
Fuse CF1
HPID6: 250V 15A
HPID10: 250V 25A
HPID16: 250V 30A
Check the electric continuity of Fuse CF1 by
tester
If CF1 is blown, Main PCB should be
replaced
Figure
11-3
Fuse CF3
(250V 3A)
Check the electric continuity of Fuse CF3 by
tester
If CF3 is blown, Main PCB should be
replaced
Fuse CF4
HPID6: 250V 3A
HPID10: 250V 3A
Check the electric continuity of
Fuse CF4 by tester
If CF4 is blown, Main PCB should be
replaced
Main PCB Other than described above Main PCB should be replaced -
A0 DC voltage error
Fan motor
Operate without lead wire for Fan motor
Check the electric continuity of Fuse by tester
If the same error code appears again,
Main PCB or Pump should be replaced
If other error codes appear, Fan motor
should be replaced
-
Power
OFF
Fuse CF6
HPID16: 250V 3A
If CF6 is blown,it should be replaced
Figure
11-4
Fuse CF7
HPID10: 250V 3A
HPID16: 250V 3A
If CF7 is blown,it should be replaced
Pump
Operate without lead wire for
Pump
If the same error code appears again,
Main PCB or Fan motor should be replaced
If other error codes appear, Pump should be
replaced
-
Reactor
Check the resistance by tester
(0.1Ω at 20°C)
If the reactor is faulty, is should be replaced. -
Main PCB
Check the voltage of Fan motor by tester
Check the voltage of Pump by tester
If the voltage is abnormal, PCB (Main should
be replaced
Figure 11-
4, 11-6
Power supply Check the power supply Confirm the power supply -
A1
Discharge
temperature error
Sensor, Temp.
Discharge
Check the resistance by tester If the sensor is faulty, it should be replaced
Figure
11-13
Auto
Gas leakage
Check the service valve and refrigerant circuit
(pipe)
Collect refrigerant once, then recharge with
prescribed mass
-
A2
Protective action
against excess
Current DC current
detection
Unreasonable
operation under/
overload
Check the place of installation (blockage of
air inlet & outlet)
Check the excess gas
Ensure the installation position to avoid
blockage of air inlet & outlet
- Manual
If excess gas is observed, collect all
refrigerant once, then recharge with
prescribed mass
Drop of power
voltage
Check the power voltage
(230V)
Confirm the power supply voltage
(230V)
Main PCB
Operate without the junction connector of
Compressor lead wire
If the same error code appears again,
Main PCB should be replaced
Momentary stop of
power
(In case of lightning)
- Restart operation
Compressor Other than described above Compressor should be replaced
A3 CT disconnection Main PCB - Main PCB should be replaced -
Manual
A4
Protective action
against excess
Current AC current
detection
Unreasonable
operation under/
overload
Check the place of installation (blockage of
air inlet & outlet)
Check the excess gas
Ensure the installation position to
avoid blockage of air inlet & outlet
-
If excess gas is observed, collect all
refrigerant once, then recharge with
prescribed mass
Drop of power
voltage
Check the power voltage
(230V)
Confirm the power supply voltage
(230V)
Momentary stop of
power (In case of
lightning)
- Restart operation
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