Immergas MAGIS COMBO 4 V2 Instructions And Recommendations page 53

Error Code
A403 Freezing detection (during cooling operation)
Protection of outdoor unit when in overload
A404
(during safety start-up, normal operating status)
A407 Compressor not working due to high pressure
A416 The compressor discharge is overheated
A430 Outdoor unit EEV operation error
A425 Not used on this model
Central heating blocked (outdoor temperature
A440
beyond 35°C)
A441 Cooling blocked (outdoor temperature below 9°C) (1)
A458 Error of outdoor unit fan no.1
A461 Compressor start-up error (Inverter)
A462 Inverter total current overload error
A463 Compressor overheated sensor
A464 Inverter IPM current overload error
A465 Compressor overload error
A466 Low voltage error of DC circuit
A467 Compressor rotation error
A468 Current sensor error (inverter)
(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 chiller cycle.
Check the temperatures of the plate heat exchanger
(1)
Check the chiller cycle.
Check the compressor connections.
Check the resistances between the different phases of the compres-
sor
(1)
Check the chiller cycle
(1)
(1)
(1)
(1)
(1)
1
Check the chiller cycle.
Check the compressor connections.
Check the resistances between the different phases of the compres-
sor
(1)
Check the inlet current.
Check the refrigerant charge.
Check normal operation of the fan.
(1)
Check the compressor sensor.
(1)
Check the compressor connections and its normal operation.
Check the refrigerant charge.
Check whether there are obstacles around the outdoor unit.
Check whether the service valve is open.
Check whether the installation pipes are mounted properly.
(1)
Check the compressor connections and its normal operation.
Check the resistances between the different phases of the compres-
sor.
(1)
Check the input voltage.
Check the power connections.
(1)
Check the compressor connections.
Check the resistances between the different phases of the compres-
sor.
(1)
Check the main board.
(1)
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