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Turn the temperature feeler gauge so that the holes are parallel with the heat
exchanger. This will help the fan switch to remain cool and not overheat. See
following:
If supply air is cold (under -5ºC):
Turn the temperature feeler gauge so that the holes are closed off as the air goes
over the heat exchanger. This will reduce fan cycling and the unit from shutting
down. See following:
In extreme cold conditions, cover the holes on the temperature feeler gauge using
foil tape. Ensure that the temperature feeler gauge is readjusted for warmer
weather conditions. Failure to do so may result in burning out fan switches- not
covered under warranty.
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