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5. TROUBLESHOOTING
5.1.
T roubles and causes of air conditioner
If one of the following malfunctions occur, stop operation, shut
off the power, and contact with your dealer.
The operation lamp is flashing rapidly (5Hz). This lamp is still
flashing rapidly after turn off the power and turn on again.
Remote controller receives malfunction or the button does not
work well.
A safety device such as a fuse, a breaker frequently actuates.
Obstacles and water enter the unit.
Water leaks from indoor unit.
Other malfunctions.
Table 5-1 Error codes
Code
Operation
Timer
E H 00
1
X
E H 0A
1
X
E L
01
2
X
E L
11
2
X
E H 12
2
X
E H 02
3
X
E H 31
4
X
E H 32
4
X
E H 33
4
X
E H 34
4
X
E H 35
4
X
E H 36
4
X
E H 37
4
X
E H 03
4
X
E H 3C
4
X
E C 50
5
X
E C 51
5
X
E C 52
5
X
E C 53
5
X
E C 54
5
X
E C 55
5
X
E C 56
5
X
E C 57
5
X
E C 05
5
X
E C 0d
14
X
E H 60
6
X
E H 61
6
X
E H 66
6
X
E C 71
12
X
E C 75
12
X
E C 72
12
X
E C 74
12
X
E C 73
12
X
E C 07
12
X
E H 0b
9
X
E H b1
9
X
E H b2
9
X
E H b3
9
X
E H b4
/
/
E H b5
10
X
E H b6
/
/
E L
0C
8
X
E H 0E
/
/
E H 0F
10
X
E H 0H
/
/
E H 0L
/
/
Indoor EEPROM error
Indoor unit EEPROM parameter error (Hardware is OK)
Indoor / outdoor units communication error
Master / Slave units communication error (TWINS)
Another unit is faulty (TWINS)
Zero-crossing signal detection error (PG motor only)
DC voltage is too low of indoor DC fan motor (with DC fan driver board)
DC voltage is too high of indoor DC fan motor (with DC fan driver board)
Over-current protection of indoor DC fan motor (with DC fan driver board)
IPM protection of indoor DC fan motor (with DC fan driver board)
Phase lack protection of indoor DC fan motor (with DC fan driver board)
Current checking circuit faulty of indoor DC fan motor (with DC fan driver board)
Zero speed protection of indoor DC fan motor (with DC fan driver board)
Indoor fan speed is out of control
Fresh air motor is faulty (Domestic models)
Temperature sensor faulty of outdoor unit (old program)
Outdoor EEPROM error
Condenser coil temperature sensor T3 open circuit or short circuit
Outdoor ambient temperature sensor T4 open circuit or short circuit
Compressor discharge temperature sensor Tp open circuit or short circuit
IPM temperature sensor T4 open circuit or short circuit
Evaporator outlet temperature sensor T2B (locates in outdoor unit) open circuit or short circuit (multi)
Gas cooler temperature sensor open circuit or short cirduit (Domestic mini VRF)
Outdoor temperature sensor fault or EEPROM fault
Outdoor fault (LCAC old program)
Indoor room temperature sensor T1 open circuit or short circuit
Evaporator coil temperature sensor T2 open circuit or short circuit
Evaporator outlet temperature sensor T2B open cirduit or shot circuit (Domestic mini VRF)
Over-current protection of outdoor DC fan motor
IPM protection of outdoor DC fan motor
Phase lack protection of outdoor DC fan motor
Current checking circuit faulty of outdoor DC fan motor
Zero speed protection of outdoor DC fan motor
Outdoor DC fan speed is out of control
Communication error between indoor PCB and display PCB
Communication error between display PCB and multi-function board
Wrong wiring of 24V controller
Communication error between indoor PCB and wired controller
Communication error between indoor PCB and voice module
Communication error between indoor PCB and smart eye
Communication error between indoor PCB and camera module
Refrigerant leakage detection
Water lever alarm
Smart eye fault
RF (Radio Frequency) module fault
Display EEPROM fault
If the system does not properly operate except the above
mentioned cases or the above mentioned malfunctions is
evident, investigate the system according to the following
procedures. (Refer to Table 5-2)
CAUTION
Please cut off the power supply when appearing the
above malfunction, check if the voltage provided is out of
range, check if the installation of air-conditioner is
correct, then electrify again after 3 minutes power off. If
the problem is still existent, please contact the local
service station or the equipment provider.
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