The alarm code cause and diagnosis method of the cabinet air conditioner of Rittal

Alarm code: A01

System message: Open the cabinet door

Air conditioning cause: The opening and closing position is incorrect

Diagnostic method: Check the transition position of the door and, if necessary, check the connection status

Alarm code: A02

System message: The temperature inside the cabinet is too high

Cause: The cooling capacity is too low or the sequence error message of smaller air conditioners is from A03 to A07

Diagnostic method: Check the cooling capacity

Alarm code: A03

System messages: Filter monitoring

Cause: The filter is dirty

Diagnosis: Clean or replace the air conditioner

Alarm code: A04

System message: Ambient temperature is too high/too low

Cause: The ambient temperature allowed range of 10 degrees to 60 degrees

Diagnosis: Raising or lowering the ambient temperature (e.g. heating or ventilating the room)

Alarm code: A05

System message: Ice

Cause: According to the operation mode, icing display

Diagnosis Method: Increase the normal temperature in the cabinet RITTAL cabinet (rittal cabinet)

Alarm code: A06

System message: PSA (High Voltage switch) monitor

Causes: The ambient temperature is too high, the condenser is dirty, the condensation filter is dirty, the condensation fan is broken, the expansion valve is broken, and the PSA (high pressure switch) monitor is broken

Diagnosis: The air conditioner high pressure exceeds the limit, clean the condenser or replace the filter, replace the condensing fan, expansion valve and PSA monitor should be repaired or replaced by engineers

Alarm Code: A07 System Message: Evaporator

Cause: Cooling failure

Diagnosis: Repair by refrigeration engineer

Alarm code: A08

System message: condensate alarm

Cause: Only some condensation in the air conditioner evaporates

Diagnosis: Check the condensate discharge and clean the foreign matter in the hose