Yes it does. Last winter in one of coldest night it was running in heat
mode and I found out it quit some time during the night. When summer
came it was working fine in cooling and when I checked heating then it
worked. Now heat won't come on again. I have to pull the unit out from
wall mounted sleeve to do some trouble-shooting. One thing I noticed is
the temperature control knob when turned end to end I don't think it
does not click any where. According to schematics it has 3 terminals for
heat or cool. I'd start looking there first. Any thing electrical I can
tackle being an EE, if it leads to compressor or refrigerant I am no
good with them at all. Thanks much for responding. I wonder where I can
see IPB (illistrated parts breakdown) of this unit?
I think I located a parts breakdown searching on "user manual" or "tech
manual" along with the name of the product. Try both. IIRC, I was only
able to view one page at a time, but I found it in minutes. Good luck!
Maybe, hopefully, there is a fuse somewhere?
Thanks, indeed the capillary thermostat STDP switch is bad. Heating side
contacs must be burnt out, there is no continuity but cooling side still
works OK. p/n of the unit is HH22UC075.
Now I have to find a replacement B4 it gets cold up here. One
disadvantage living in Canada when one needs some thing like this. I am
looking for an outfit who will ship one
to Canada. If I jumper across burnt out terminals heating element(6 KW
rated) comes on
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