Lennox CLIMATIC series User Manual page 54

COMMUNICATION
ALARM 092, 094, 103, 203:
FAN INVERTER, FAILURE
Description
The CLIMATIC has detected an alarm on the pump inverter or the fan inverter.
• Alarm 092: inverter failure of the blower fan,
• Alarm 094: inverter failure of the exhaust fan,
• Alarm 103: inverter failure of the condenser fan on circuit 1,
• Alarm 203: inverter failure of the condenser fan on circuit 2.
Action
• Alarm 092: immediate shut down of the complete unit. The alarm is signalling,
• Alarm 094: immediate shut down of the complete unit. The alarm is signalling,
• Alarm 103: immediate shut down of the circuit 1. The alarm is signalling,
• Alarm 203: immediate shut down of the circuit 2. The alarm is signalling.
Reset
Once the communication is re-established for 2 minutes, the alarms 094 / 103 / 203 are automatically reset.
For the alarm 092, once the communication is re-established for 2 minutes, the alarm is automatically reset. Up to 3 trips can occur
during a day and are saved in the alarm history. The two fi rst trips don't give the alarm alert, and the alarm counter is reset every day
at 11 am. The third trip activates the fault report and must be manually reset.
Possible cause(s)
• Problem with wiring connection,
• Pump or fan damaged,
• Inverter damaged.
Remedies
• Check the inverter connection,
• Replace the pump or fan,
• Replace the inverter.
ALARM 102, 202:
CONDENSER FAN, ELECTRICAL FAILURE
Description
The thermal motor protection of the condenser fan has detected an over temperature for 5 s, while the fan motor was in demand for
at least 5 s.
• Alarm 102: thermal motor protection of the condenser fan on circuit 1,
• Alarm 202: thermal motor protection of the condenser fan on circuit 2.
Action
• Alarm 102: the alarm is signalling,
• Alarm 202: the alarm is signalling
Reset
Once the data read is coherent for 2 minutes, the alarm is automatically deleted. Up to 3 trips can occur during a day and are saved in
the alarm history. The two fi rst trips don't give the alarm alert, and the alarm counter is reset every day at 11 am. The third trip activates
the fault report and must be manually reset.
Possible cause(s)
• Wrong air fl ow operating,
• Problem with wiring connection,
• Fan motor damaged.
Remedies
• Check the air system,
• Check the connection,
• Replace the fan motor.
• 52 • CLIMATIC RT_UNITARY-IOM-1508-E