:
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
To Next Page
Loading...
