Immergas MAGIS PRO 12 V2 Instructions And Recommendations page 43

Error Code
Compressor rotation error
A467
Current sensor error (inverter)
A468
Voltage sensor error of DC circuit (inverter)
A469
A470 EEPROM reading/writing error of outdoor unit
EEPROM reading/writing error of outdoor unit
A471
A474 Inverter temperature sensor error
Error of outdoor unit fan no.2 (where present)
A475
A484 PFC overload
Incoming current sensor error
A485
IPM overheated
A500
Gas leak error
A554
A590 Inverter board error
Not present
A601
Not present
A604
Not present
A653
Not present
A654
Not present
A899
Not present
A900
Not used
A901
Not used
A902
(1) If the shutdown or fault persists, contact an authorised company (e.g. Authorised After-Sales Technical Assistance Centre).
Anomaly signalled Indoor unit status / Solution
Check the compressor connections.
Check the resistances between the different phases of the compres-
sor.
(1)
Check the main board.
(1)
Check the power connector of the inverter board.
Check the connectors RY21 and R200 of the inverter board.
(1)
Check the main board.
(1)
Check the main board.
(1)
Replace inverter board (1)
Check the wiring.
Check that the fan is powered.
Check the board fuses.
(1)
Check inductances.
Replace inverter board.
(1)
Replace inverter board.
(1)
Check temperature of inverter board. Switch the machine off. Wait
for the inverter to cool down. Switch the machine back on.
(1)
Check that the coolant is charged
Check the liquid sensor of the indoor unit
Check whether the service valve is open
Check whether the installation pipes are mounted properly.
(1)
Check normal operation of the main board.
Replace the main board
(1)
(1)
(1)
(1)
(1)
(1)
(1)
Indoor unit error
Check indoor unit
(1)
Indoor unit error
Check indoor unit
(1)
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