Lennox CLIMATIC 60 User Manual page 76

COMMUNICATION
ALARM 045, 046:
PUMP EVAPORATOR, FAULTY PRESSURE SENSOR
Description
The evaporator water pressure (in or out) measured by the sensor is outside of the permitted range. This alarm is managed only if the
"evaporator variable fl ow" option is selected.
• Alarm 45: water evaporator pressure sensor IN faulty,
• Alarm 46: water evaporator pressure sensor OUT faulty.
Action
• Immediate shut down of the pump and the unit.
• The alarm is signalling.
Reset
Once the CLIMATIC™ 60 has read correct pressure values 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 except if a trip is still present during 1 hour,
and are automatically reset every day at 6 am. The third trip activates the fault report and must be manually reset.
Possible cause(s)
• Problem with wiring connection (sensor in short circuit or disconnected),
• Sensor damaged.
Remedies
• Check the wiring connections,
• Replace the sensor.
ALARM 047, 048:
PUMP CONDENSER, FAULTY PRESSURE SENSOR
Description
The water pressure of the condenser pump (in or out) measured by the sensor is outside of the permitted range. This alarm is managed
only when the condenser variable fl ow option is selected.
• Alarm 47: water condenser pressure sensor IN faulty,
• Alarm 48: water condenser pressure sensor OUT faulty.
Action
• Immediate shut down of the pump and the unit.
• The alarm is signalling.
Reset
Once the CLIMATIC™ 60 has read correct pressure values 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 except if a trip is still present during 1 hour,
and are automatically reset every day at 6 am. The third trip activates the fault report and must be manually reset.
Possible cause(s)
• Problem with wiring connection (sensor in short circuit or disconnected),
• Sensor damaged.
Remedies
• Check the wiring connections,
• Replace the sensor.
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CL60-AC CHILLER-IOM-1011-E