Lennox CLIMATIC 60 User Manual page 73

COMMUNICATION
ALARM 021, 022, 023, 024:
WATER EVAPORATOR, OUT OF RANGE
Description
The water evaporator temperature (inlet or outlet) measured by the probe is outside of the permitted range. This operating range can
vary according to the presence or not of glycol with the chilled water.
• Alarm 021: the outlet water temperature is higher than the safety limit setting (3274) in heating mode,
• Alarm 022: the outlet water temperature is lower than the safety limit setting (3271) in cooling mode,
• Alarm 023: the inlet water temperature is higher than the safety limit setting (3272) in cooling mode,
• Alarm 024: the inlet water temperature is lower than the safety limit setting (3273) in heating mode.
Action
Immediate shut down of the complete unit. The alarm is signalling 5 min after if the water evaporator temperature is still out of the
permitted range.
Reset
The alarm is automatically deleted once the temperature has reached the permitted operating range for 2 min. After a change over
mode (cool / heat), these alarms are disabled during 15 min.
Possible cause(s)
• Temperature probe failed
• Problem with wiring of probe.
Remedies
• Replace probe
• Check the connections of the probe.
ALARM 025, 026, 027, 028:
WATER CONDENSER, OUT OF RANGE
Description
The water condenser temperature (Inlet or Outlet) measured by the probe is outside of the permitted range.
• Alarm 025: the outlet water temperature is higher than the safety limit setting (3574) in heating mode,
• Alarm 026: the outlet water temperature is lower than the safety limit setting (3571) in cooling mode,
• Alarm 027: the inlet water temperature is higher than the safety limit setting (3572) in cooling mode,
• Alarm 028: the inlet water temperature is lower than the safety limit setting (3573) in heating mode.
Action
Immediate shut down of the complete unit. The alarm is signalling 5 min after if the condenser temperature is still out of range.
Reset
The alarm is automatically deleted once the temperature has reached the permitted operating range for 2 min. After a change over
mode, these alarms are reset during 15 min.
Possible cause(s)
• Problem with wiring of probe,
• Temperature probe failed.
Remedies
• Check the connections of the probe,
• Replace probe.
CL60-AC CHILLER-IOM-1011-E
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