12
Error codes
The error codes shown in the table below will be visible in the INDOOR UNIT display whenever an error is detected from the OUTDOOR
UNIT. ALL errors will stop the compressor from running until the error is solved. Some errors are automatically cleared, some needs man-
ual action and some severe errors might even need hardware to be replaced or serviced. Follow the superscript to below the table for
further information.
N
It takes a minimum of 3 minutes for the compressor to start from a
standstill.
Display
Explanation
Error source
E101
1
Communication error between the indoor and outdoor unit (when indoor unit cannot receive
signals)
COMM KIT
OUTDOOR UNIT
E109
1
Communication error due to indoor unit address incomplete
COMM KIT
OUTDOOR UNIT
E111
1
Modbus communication error (when COMM KIT cannot receive signals)
COMM KIT
OUTDOOR UNIT
E162
3
EEPROM H/W error
COMM KIT
E177
1
Emergency error
COMM KIT
OUTDOOR UNIT
E201
1
COMM KIT/OUTDOOR UNIT communication error (matching error)
OUTDOOR UNIT
E202
1
COMM KIT/OUTDOOR UNIT communication error (3 min)
OUTDOOR UNIT
E203
1
Communication error between INVERTER and MAIN MICOM (6 min)
OUTDOOR UNIT
E221
1
OUTDOOR UNIT temperature sensor error
OUTDOOR UNIT
E231
1
Condenser temperature sensor error
OUTDOOR UNIT
E251
1
Discharge temperature sensor error
OUTDOOR UNIT
E320
1
OLP sensor error
OUTDOOR UNIT
E403
1, 4
Detection of OUTDOOR UNIT compressor freezing (during cooling operation)
OUTDOOR UNIT
E404
1, 4
Protection of OUTDOOR UNIT when it is overload (during Safety start, Normal operation state) OUTDOOR UNIT
E407
1, 4
Comp down due to high pressure
OUTDOOR UNIT
E416
2
Discharge of compressor is overheated
OUTDOOR UNIT
E425
2
Power source line missing error (only for 3-phase models)
OUTDOOR UNIT
E440
1, 4
Heating operation blocked (outdoor temperature over 35°C)
OUTDOOR UNIT
E441
1, 4
Cooling operation blocked (outdoor temperature below 9°C)
OUTDOOR UNIT
E458
2
OUTDOOR UNIT fan 1 error
OUTDOOR UNIT
E461
2
[Inverter] Compressor startup error
OUTDOOR UNIT
E462
2
[Inverter] Total current error/PFC over current error
OUTDOOR UNIT
E463
2
OLP is overheated
OUTDOOR UNIT
E464
2
[Inverter] IPM over current error
OUTDOOR UNIT
E465
2
Compressor V limit error
OUTDOOR UNIT
E466
1, 4
DC LINK over/low voltage error
OUTDOOR UNIT
E467
2
[Inverter] Compressor rotation error
OUTDOOR UNIT
E468
2
[Inverter] Current sensor error
OUTDOOR UNIT
E469
2
[Inverter] DC LINK voltage sensor error
OUTDOOR UNIT
E470
3
Outdoor unit EEPROM Read/Write error
OUTDOOR UNIT
E471
3
Outdoor unit EEPROM Read/Write error (OTP error)
OUTDOOR UNIT
E474
1
IPM(IGBT Module) or PFCM temperature sensor error
OUTDOOR UNIT
Commissioning
iTec
Thermia Värmepumpar
VIJSR102
47
