Page 84 MUL41E-0610/06-2011
ALARM 073, 074, 075, 076, 077, 078:
INVERTER LINK, FAILURE
Description
The link between the inverter and the CLIMATIC™ 60 has been disconnected for 5s.
• Alarm 073: The evaporator pump inverter is disconnected from the CLIMATIC™ 60,
• Alarm 074: The condenser pump inverter is disconnected from the CLIMATIC™ 60,
• Alarm 075: The condenser fan inverter of the circuit 1 is disconnected from the CLIMATIC™ 60,
• Alarm 076: The condenser fan inverter of the circuit 2 is disconnected from the CLIMATIC™ 60,
• Alarm 077: The condenser fan inverter of the circuit 1/2 is disconnected from the CLIMATIC™ 60,
• Alarm 078: The condenser fan inverter of the freecooling is disconnected from the CLIMATIC™ 60.
Action
• Alarm 073: Immediate shut down of the complete unit. The alarm is signalling,
• Alarm 074: Immediate shut down of the complete unit. The alarm is signalling,
• Alarm 075: Immediate shut down of the circuit 1. The alarm is signalling,
• Alarm 076: Immediate shut down of the circuit 2. The alarm is signalling,
• Alarm 077: Doesn’t stop the circuit 1 or 2. The alarm is signalling,
• Alarm 078: Doesn’t stop the unit. The alarm is signalling.
Reset
Once the communication is re-established for 2 minutes, the alarm is automatically deleted. Up to 6 trips can occur
during a day and are saved in the alarm historic. The five first trips don’t give the alarm alert except if a trip is still
present during 1 hour, and are automatically reset every day at 6h00 am. The sixth trip activates the fault report
and must be manually reset.
Possible cause(s)
• Problem with wiring connection,
• Wrong inverter address,
• Inverter damaged.
Remedies
• Check the wiring connections,
• Check the inverter address,
• Replace the inverter.
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