CLIMATIC™ 50 User manual - Lennox
CLIMATIC™ 50 User manual - Lennox
CLIMATIC™ 50 User manual - Lennox
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Blowing temperature, outside limits<br />
Description<br />
Error code: 012, 022<br />
The temperature of the blown air measured by the sensor is outside the permitted range or the hot water system frost<br />
thermostat is activated.<br />
Lower blower temperature limit: Blower temperature < safety thresholds<br />
Upper blower temperature limit: Blower temperature > safety thresholds<br />
2113 � Ambient temperature<br />
3373 � 1st safety threshold, lower blower temperature limit<br />
3374 � 2nd safety threshold, lower blower temperature limit<br />
3375 � 3rd safety threshold, lower blower temperature limit<br />
3376 � 1st safety threshold, upper blower temperature limit<br />
3377 � 2nd safety threshold, upper blower temperature limit<br />
Action<br />
� 1st lower limit safety threshold:<br />
One compressor stops immediately, then the others progressively.<br />
Fresh air regulator set to minimum opening.<br />
� 2nd lower limit safety threshold:<br />
All compressors stop.<br />
Fresh air regulator closes.<br />
� 3rd lower limit safety threshold or activation of frost thermostat:<br />
If there is a hot water unit; the complete unit stops immediately.<br />
Otherwise; the unit stops after 15 minutes.<br />
� 1st upper limit safety threshold:<br />
One compressor or back-up heating stage stops immediately, then the others progressively.<br />
� 2nd lower limit safety threshold:<br />
All the compressors and all the back-up heating stages stop.<br />
� Fault signalling. Memorisation is displayed.<br />
� Display of fault.<br />
012, 2nd upper blower temperature limit threshold.<br />
022, 3rd lower blower temperature limit threshold or activation of frost thermostat.<br />
Reset<br />
Automatic resetting of fault as soon as the temperature returns to within the permitted operating range, except 3rd safety<br />
threshold lower limit which requires a <strong>manual</strong> reset.<br />
Possible causes Solving the problem<br />
Insufficient airflow Check the air system<br />
Air damper jammed open Check the air damper, mechanically and electrically<br />
Frost safety thermostat activated Manually reset the pressure switch<br />
Probe failure. Replace the probe.<br />
Wiring problem with the probe Check the probe connections<br />
CLIMATIC<strong>50</strong> – IOM – Rooftops/ Aircoolair CL<strong>50</strong>-ROOFTOPS-IOM-1107-E 31
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