Immergas MAGIS COMBO PLUS V2 Series Instructions And Recommendations For The Installer page 57

Error Code
A469 Voltage sensor error of DC circuit (inverter)
A470 EEPROM reading/writing error of outdoor unit
A471 EEPROM reading/writing error of outdoor unit
A474 Inverter temperature sensor error
A475 Error of outdoor unit fan no.2 (where present)
A484 PFC overload
A485 Incoming current sensor error
A500 IPM overheated
A554 Gas leak error
A590 Inverter board error
A601 Not present
A604 Not present
A653 Not present
A654 Not present
A899 Not present
A900 Not present
A901 Not used
A902 Not used
A903 Not used
A904 Not used
(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 / Solution
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)
Indoor unit error
Check indoor unit
(1)
Indoor unit error
Check indoor unit
(1)
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