:
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
17
TROUBLESHOOTING (CONT)
Error Display (Indoor Unit)
When the indoor unit encounters a recognized error, the indicator light flashes in a corresponding series, the timer display may turn on or begin
flashing, and the error code displays. See Table 9 for the error codes and meanings.
Table 9 — Error Codes
For other codes
The display board may show a garbled code or a code undefined by the service manual. Ensure that this code is not a temperature reading.
Troubleshooting
Test the indoor unit using the remote controller. If the unit display is working however will not respond to the remote, the indoor PCB needs
replacing. If there is no display after pressing
LED
and the unit responds, the display board needs replacing.
DISPLAY
ERROR INFORMATION
EH 00/EH 0A
Indoor unit EEPROM parameter error
EL 01
Indoor / outdoor unit communication error
EH 02
Zero-crossing signal detection error
EH 30
Over low voltage protection of indoor external fan
EH 31
Over voltage protection of indoor external fan
EH 03
The indoor fan speed is operating outside of the normal range
EC 51
Outdoor unit EEPROM parameter error
EC 52
Condenser coil temperature sensor T3 is in open circuit or has short circuited
EC 53
Outdoor room temperature sensor T4 is in open circuit or has short circuited
EC 54
Compressor discharge temperature sensor TP is in open circuit or has short circuited
EC 56
Evaporator coil outlet temperature sensor T2B is in open circuit or has short circuited
Eh 60
Indoor room temperature sensor T1 is in open circuit or has short circuited
Eh 61
Evaporator coil temperature sensor T2 is in open circuit or has short circuited
EC 07
The outdoor fan speed is operating outside of the normal range(
EH 0
Indoor PCB/Display board communication error
EL 0C
Refrigerant leak detected
PC 00
IPM malfunction or IGBT over-strong current protection
PC 10
Over low voltage protection
PC 11
Over voltage protection
PC 12
DC voltage protection
PC 02
Compressor top high temperature protection (OLP)
PC 03
Pressure protection
PC 40
Communication error between outdoor main chip and compressor driven chip
Pc 41
Current Input detection protection
PC 42
Compressor start error
PC 43
Lack of phase (3 phase) protection
PC 44
No speed protection
PC 45
341PWM error
PC 46
Compressor speed malfunction
PC 49
Compressor over current protection
--
Indoor units mode conflict (match with multi outdoor unit)
PC 0A
Condenser high temperature protection
PC 06
Compressor discharge temperature protection
PC 08
Outdoor current protection
PH 09
Anti-cold air in heating mode
PC 0F
PFC module malfunction
pc 0l
Outdoor ambient temperature too low
PH 90
Evaporator coil temperature over high protection
PH 91
Evaporator coil temperature over low Protection
LC 05
Frequency limit caused by voltage
LC 03
Frequency limit caused by current
LC 02
Frequency limit caused by TP
LC 01
Frequency limit caused by T3
LH 00
Frequency limit caused by T2
LC 06
Frequency limit caused by PFC
LH 07
Frequency limit caused by remote controller
nA
no malfunction or protection
