Lennox CLIMATIC 60 User Manual page 78

COMMUNICATION
ALARM 071, 072:
EXPANSION BOARD LINK, FAILURE
Description
The link between the expansion board(s) 1 or 2 and the CLIMATIC™ 60 is disconnected.
• Alarm 71: the expansion board N°1 is disconnected from the CLIMATIC™ 60,
• Alarm 72: the expansion board N°2 is disconnected from the CLIMATIC™ 60.
Action
• Immediate shut down of the unit.
• The alarm is signalling.
Reset
Once the communication is re-established for 30 s, the alarm is automatically deleted. Up to 6 trips can occur during a day and are
saved in the alarm history. The fi ve fi rst trips don't give the alarm alert except if a trip is still present during 1 hour, and are automatically
reset every day at 6 am. The sixth trip activates the fault report and must be manually reset.
Possible cause(s)
• Problem with wiring connection,
• Wrong expansion board address,
• Expansion board damaged.
Remedies
• Check the wiring connections,
• Check the expansion board address (refer to the "FREE INPUT / OUTPUT" paragraph),
• Replace the expansion board.
ALARM 073, 074, 075, 076, 077, 078:
INVERTER LINK, FAILURE
Description
The link between the inverter and the CLIMATIC™ 60 has been disconnected for 5 s.
• 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 circuit 1 is disconnected from the CLIMATIC™ 60,
• Alarm 076: the condenser fan inverter of circuit 2 is disconnected from the CLIMATIC™ 60,
• Alarm 077: the condenser fan inverter of 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 circuit 1. The alarm is signalling,
• Alarm 076: immediate shut down of ircuit 2. The alarm is signalling,
• Alarm 077: doesn't stop 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 history. The fi ve fi rst trips don't give the alarm alert except if a trip is still present during 1 hour, and are
automatically reset every day at 6 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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CL60-AC CHILLER-IOM-1011-E