Troubleshooting
4-21
NO
Error code
Remarks Remarks
23
E440
Heating operation restricted at outdoor
temperature over Theat_ high value
1. Check the range of temperature
limited for heating operation
2. Check the outdoor temperature sensor
24 E441
Cooling operation restricted at outdoor
temperature below Tcool_low value
1. Check the range of temperature limited
for cooling operation
2. Check the outdoor temperature sensor
25 E458 Fan speed error Check the fan1 and outdoor inverter PBA
26 E461
Error due to operation failure
of inverter compressor
1. Check the outdoor Inverter PBA
2. Check the compressor
27 E462 System stop due to full current control Relocate the outdoor unit
28 E463
Over current trip / PFC over
current error
Check the OLP sensor
29 E464 IPM Over Current
1. Check the state of refrigerant
2. Check the compressor
3. Check if the service valve is open
30 E465 Comp. Over load error
1. Check if the service valve is open
2. Check the pressure of refrigerant
3. Check it the Fan Motor is running
4. Check the outdoor inverter PBA and
the compressor
31 E466 DC-Link voltage under/over error Check AC Power and DC Link Voltage
32 E467
Error due to abnormal rotation of the compressor
or unconnected wire of compressor
Check the compressor wire
33 E468 Error on current sensor (Short or Open) Check the outdoor inverter PBA
34 E469
Error on DC-Link voltage sensor
(Short or Open)
1. Check AC Power and DC Link Voltage
2. Check the outdoor inverter PBA
35 E470
Outdoor unit EEPROM Read/
Write error (Option)
Check the outdoor EEPROM data
36 E471
Outdoor unit EEPROM Read/
Write error (H/W)
Check the outdoor EEPROM PBA
37 E474
Error on IPM Heat Sink sensor of
inverter 1 (Short or Open)
Check the outdoor inverter PBA
38 E475 Error on inverter fan 2 Check the fan2 and outdoor inverter PBA
39 E483 H/W DC_Link Over Voltage Error Check AC Power and DC Link Voltage
40 E484 PFC Overload (Over current) Error Check the outdoor inverter PBA
41 E485
Error on input current sensor of inverter 1
(Short or Open)
Check the outdoor inverter PBA
42 E488 AC Input Voltage Sensor Error Check AC Power and DC Link Voltage
43 E500 IPM over heat error on inverter 1 Check Outdoor Inverter PBA.
44 E554 Gas leak detected Check the refrigerant leakage
45 E556
Error due to mismatching capacity of
indoor and outdoor unit
Check the indoor and Outdoor unit Capacity
46
E590 Inverter EEPROM CheckSum error
1. Reboot the EEPROM
2. Check the outdoor inverter PBA and
the main PBA
Error code [outdoor] (cont.)
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