User manual

41
ENGLISH
No. Error Code Meaning Remarks
18 E422 Blockage detected on high pressure pipe
1. Check if the service valve is
open
2.
Check for refrigerant
leakage(pipe connections,
heat exchanger) and charge
refrigerant if necessary
3.
Check if there's any blockage
on refrigerant cycle(indoor
unit/outdoor unit)
4.
Check if additional refrigerant
has been added after pipe
extension
19 E425 Reverse phase or open phase
Check whether 3 phase is
reversed or opened.
20 E440
Heating operation restricted at outdoor temperature over Theat_
high value (default: 30 °C)
HEATING
21 E441
Cooling operation restricted at outdoor temperature below
Tcool_low value (default: 0 °C)
COOLING
22 E458 Fan speed error FAN1 ERROR
23 E461 Error due to operation failure of inverter compressor -
24 E462 System stop due to full current control -
25 E463 Over current trip / PFC over current error Check OLP sensor
26 E464 IPM Over Current(O.C) IPM
27 E465 Comp. Over load error
-
28 E466 DC-Link voltage under/over error
Check AC Power and DC Link
Voltage
29 E467
Error due to abnormal rotation of the compressor or uncon-
nected wire of compressor
Check Comp wire
30 E468 Error on current sensor (Short or Open)
Check Outdoor Inverter PBA.
31 E469 Error on DC-Link voltage sensor (Short or Open)
-
32 E470 Outdoor unit EEPROM Read/Write error (Option)
Check Outdoor EEPROM Data
33 E471 Outdoor unit EEPROM Read/Write error (H/W)
Check Outdoor EEPROM PBA
34 E472 AC Line Zero Cross Signal out
-
35 E473 Comp Lock error
-
36 E474 Error on IPM Heat Sink sensor of inverter 1 (Short or Open)
Check Outdoor Inverter PBA.