MAXA i-32V5C MIDI 0121 - ALARM Menu[Err]; Troubleshooting

i-32V5 MIDI Chillers and Inverter Air/Water heat pumps with axial fan
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The menu only appears if there are acve alarms and lists the errors present. In the case of a mul-circuit machine, the alarms are subdivided by
circuit (label ALCx grants access to the alarms of circuit number x).
15. TROUBLESHOOTING
PROBLEM CAUSE SOLUTION
The unit does not start
Failure of power supply
Check fuses
Check system voltage
Check the protecon systems upstream of the unit
Damaged electronic board
Damaged contactor
Compressor damaged
Replace the damage component
Poor heang/cooling capacity
Insucient amount of refrigerant
Palnt system not properly sized
Check
Noisy compressor
Not adequately xed
Wrong installaon
Reversed phases
Check
Compressor does not start be-
cause of protecve devices
Increase in discharge pressure
Low inlet pressure
Incorrect power supply
Incorrect wiring
Incorrect working condions
Thermal protecon intervenon
Check
Damaged pressure switch Replace
High exhaust pressure
Temperatura aria esterna alta
Temperatura acqua ritorno impianto elevata
Aria nel circuito idraulico
Carica gas refrigerante eccessiva
Check
Portata aria scarsa
Portata acqua scarsa
Check the fan and pump operaon
Low exhaust pressure
High outdoor air temperature
Low plant return water temperature
Residual humidity in the cooling circuit
Air in the hydraulic circuit
Insucient refrigerant gas charge
Check
High sucon pressure
High outdoor air temperature
Low plant return water temperature
Expansion valve remains too opened / dam-
aged
Check
Low compressor sucon pressure
Low outdoor air temperature
Low plant return water temperature
Expansion valve remains too closed / clogged/
damaged
Dirty plate heat exchanger
Check
Low air ow rate
Low water ow rate
Check the fan and pump operaon