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11. Service and Maintenance
11.4 List of Error codes
Error
codes
Appearance, Portion, Parts
seemed wrong
Method of check
Troubleshooting
Figure/
Table
Error
reset
Power supply
Check the power supply
Confirm the power supply
Fuse CF1
0639U
:
250V 15A
1039U
:
250V 25A
1639U
:
250V 30A
Check the electric continuity of
Fuse CF1 by tester
If CF1 is blown, PCB (Main) should be
replaced
Fig. 1
Fuse CF3
(250V 3A)
Check the electric continuity of
Fuse CF3 by tester
If CF3 is blown, PCB (Main) should be
replaced
Fig. 1
Fuse CF4
0639U
:
250V 3A
1039U
:
250V 3A
Check the electric continuity of
Fuse CF4 by tester
If CF4 is blown, PCB (Main) should be
replaced
Fig. 1
PCB (Main)
Other than described above
PCB (Main) 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,
PCB (Main) or Pump should be
replaced
If other error codes appear, Fan motor
should be replaced
Power
OFF
Fuse CF6
(1639U : 250V 3A)
If CF6 is blown,it should be replaced
Fig. 2
Fuse CF7
1039U
:
250V 3A
1639U
:
250V 3A
If CF7 is blown,it should be replaced
Fig. 2
Pump
Operate without lead wire for
Pump
If the same error code appears again,
PCB (Main) 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, it should be
replaced
PCB (Main)
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
Fig. 2,4
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 Table 2
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)
PCB (Main)
Operate without the junction
connector of Compressor lead wire
If the same error code appears again,
PCB (Main) should be replaced
Momentary stop of
power
(In case of lightning)
Restart operation
Compressor
Other than described above
Compressor should be replaced
HP unit alarms
Содержание AEYC-0639U-CH
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