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larry 34
Nov 1, 2008, 05:01 PM
Why would my heat pump freez in the heating mode ?

hvac1000
Nov 1, 2008, 10:52 PM
It is not defrosting if the outside unit freezes up.

There can be mechanical controls
Circuit boards
Defective reversing valves or reversing valve coils
Best to call for ON SITE service or you will spend big $$$ for parts you may not need.