Protection Codes

Technical Data Sheet

Hitachi Protection Codes

Display

Description



Pressure ratio fall control,



Suction pressure increasing protection



Pressure ratio increase control



Pressure ratio fall control



Discharge pressure increase protection



Inverter current protection



Inverter fin temperature protection

 . 

Fan inverter fin temperature protection



Discharge gas temperature increase protection



Frost protection



Suction pressure fall protection



Inverter overcurrent (unit stopped - retry)



4 Way valve switching protection



Insufficient/Excessive voltage (unit stopped - retry)



Oil return control protection



Unbalance power source



Discharge pressure decrease protection



External input controling max frequency



External input controling max frequency



Suction pressure decrease protection



Cold draught protection



Suction pressure increase protection



Pressure ratio fall protection (unit stopped - retry)



Suction pressure increase protection (unit stopped - retry)



Discharge pressure increase protection (unit stopped - retry)



Constant speed compressor over current (unit stopped - retry)



Suction pressure/High discharge temperature protection



Discharge superheat decreasing (unit stopped - retry)



Inverter overcurrent (unit stopped - retry)

 . 

Fan inverter overcurrent (unit stopped - retry)



Insufficient/Excessive voltage (unit stopped - retry)



Discharge pressure falling (unit stopped - retry)

Hitachi Air Conditioning Europe SAS.

Whitebrook Park, Lower Cookham Road, Maidenhead, Berkshire SL6 8YA Tel: 01628 585393, Fax: 01628 585500 Email: aircon.technical@hitachi-eu.com

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