Error Codes - Thermia Itec Commissioning

Commissioning
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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.
It takes a minimum of 3 minutes for the compressor to start from a
N
standstill.
Display Explanation
Communication error between the indoor and outdoor unit (when indoor unit cannot receive
1
E101
signals)
Communication error due to indoor unit address incomplete
E109 1
1 Modbus communication error (when COMM KIT cannot receive signals)
E111
EEPROM H/W error
3
E162
Emergency error
1
E177
COMM KIT/OUTDOOR UNIT communication error (matching error)
E201 1
COMM KIT/OUTDOOR UNIT communication error (3 min)
E202 1
Communication error between INVERTER and MAIN MICOM (6 min)
1
E203
OUTDOOR UNIT temperature sensor error
1
E221
Condenser temperature sensor error
1
E231
Discharge temperature sensor error
E251 1
OLP sensor error
E320 1
Detection of OUTDOOR UNIT compressor freezing (during cooling operation)
1, 4
E403
Protection of OUTDOOR UNIT when it is overload (during Safety start, Normal operation state) OUTDOOR UNIT
1, 4
E404
Comp down due to high pressure
1, 4
E407
Discharge of compressor is overheated
E416 2
2 Power source line missing error (only for 3-phase models)
E425
Heating operation blocked (outdoor temperature over 35°C)
1, 4
E440
Cooling operation blocked (outdoor temperature below 9°C)
1, 4
E441
OUTDOOR UNIT fan 1 error
2
E458
[Inverter] Compressor startup error
E461 2
[Inverter] Total current error/PFC over current error
2
E462
OLP is overheated
2
E463
[Inverter] IPM over current error
2
E464
Compressor V limit error
E465 2
DC LINK over/low voltage error
E466 1, 4
[Inverter] Compressor rotation error
2
E467
[Inverter] Current sensor error
2
E468
[Inverter] DC LINK voltage sensor error
2
E469
Outdoor unit EEPROM Read/Write error
E470 3
3 Outdoor unit EEPROM Read/Write error (OTP error)
E471
IPM(IGBT Module) or PFCM temperature sensor error
1
E474
Thermia Värmepumpar
iTec
VIJSR102
Error source
COMM KIT
OUTDOOR UNIT
COMM KIT
OUTDOOR UNIT
COMM KIT
OUTDOOR UNIT
COMM KIT
COMM KIT
OUTDOOR UNIT
OUTDOOR UNIT
OUTDOOR UNIT
OUTDOOR UNIT
OUTDOOR UNIT
OUTDOOR UNIT
OUTDOOR UNIT
OUTDOOR UNIT
OUTDOOR UNIT
OUTDOOR UNIT
OUTDOOR UNIT
OUTDOOR UNIT
OUTDOOR UNIT
OUTDOOR UNIT
OUTDOOR UNIT
OUTDOOR UNIT
OUTDOOR UNIT
OUTDOOR UNIT
OUTDOOR UNIT
OUTDOOR UNIT
OUTDOOR UNIT
OUTDOOR UNIT
OUTDOOR UNIT
OUTDOOR UNIT
OUTDOOR UNIT
OUTDOOR UNIT
OUTDOOR UNIT
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