Lennox CLIMATIC 60 User Manual page 75

COMMUNICATION
ALARM 041, 042:
PUMP EVAPORATOR, ELECTRICAL FAILURE
Description
The thermal magnetic circuit breaker protection of the evaporator pump 1 or 2 has tripped for 5 s, whereas the pump was in demand
for at least 5 s.
• Alarm 41: thermal magnetic circuit breaker protection of the pump 1,
• Alarm 42: thermal magnetic circuit breaker protection of the pump 2.
Action
Case of single pump:
• Immediate shut down of the pump and the unit.
• The alarm is signalling.
Case of double pump:
• Immediate shut down of the current pump and the compressor(s).
• Time delay of 30 s,
• Start the second pump if possible (refers to the "PUMP EVAPORATOR MANAGEMENT" paragraph)
• The alarm is signalling.
Reset
These alarms are manually reset.
Possible cause(s)
• Problem with wiring connection,
• Circuit breaker wrong adjusted.
Remedies
• Check the pump(s) connections,
• Adjust the circuit breaker.
ALARM 043, 044:
PUMP CONDENSER, ELECTRICAL FAILURE
Description
The thermal magnetic circuit breaker protection of the condenser pump 1 or 2 has tripped for 5 s, whereas the pump was in demand
for at least 5 s.
• Alarm 43: thermal magnetic circuit breaker protection of the pump 1,
• Alarm 44: thermal magnetic circuit breaker protection of the pump 2.
Action
Case of single pump:
• Immediate shut down of the pump and the unit.
• The alarm is signalling.
Case of double pump:
• Immediate shut down of the current pump and the compressor(s).
• Time delay of 30 s,
• Start the second pump if possible (refers to the "PUMP CONDENSER MANAGEMENT" paragraph)
• The alarm is signalling.
Reset
These alarms are manually reset.
Possible cause(s)
• Problem with wiring connection,
• Circuit breaker wrong adjusted.
Remedies
• Check the pump(s) connections,
• Adjust the circuit breaker.
CL60-AC CHILLER-IOM-1011-E
• 73 •