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Posted by KT on January 15, 2008, 3:55 pm
Have your technician check the defrost termination temperature. They set
them at 50º at the factory. In our area we've been setting them at 70º. The
available termination temperatures are 50º, 70º, 90º and 100º. The higher
the termination temperature the more energy will be used during defrost but
the defrost should be more complete.
> My lennox XP19 air to air heat pump is located outside. We had some
> freezing rain and the units drain holes plugged up causing ice to
> build up inside the unit to a depth of 12 inches. Does anyone know
> how to prevent this from happening in cold winter climates like
> Southern Ontario. This is an obvious design flaw for this unit. The
> unit has been installed correctly at the correct height and is level.
> The unit drains well as long as the drain holes are not plugged with
> ice.
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