Replies

1. 
   Dana1 | Jan 02, 2017 02:41pm | #1

   Is it possible to supply any LESS information about your heat pump? ;-)

   Different makes & models use different approaches for controlling defrost modes.

2. 
   83cj7jeep | Jan 02, 2017 02:50pm | #2

   Sorry bout that it's a Revolv and it is about 4 yrs old never gave a problem before. Think 4.5 ton unit everything is clean coils inside an out

3. GBA Editor
   Martin Holladay | Jan 03, 2017 05:52am | #3

   Stephen,
   The problem you describe can't be solved over the internet. You need to call up a service technician.

4. 
   DIYJester | Jan 03, 2017 11:17am | #4

   Is it possible it is low on refrigerant causing lower pressures and possibly freezing? I know A-coils will freeze over if this is the case on regular A/C units. I would think it could work in reverse and freeze the condenser in heating mode.