Or maybe not a problem at all

There is a set point where the system switches from heat pump to backup heat simply because the outdoor temperature is too low and the heat pump loses efficiency. This may have nothing to do with the power loss but only the normal operation at low temperature.

In response to this post by MP4VT2004

Posted: 01/22/2019 at 12:00PM

Ok resident HVAC techs, electrical engineers, DIYers, or... -- MP4VT2004 01/22/2019 09:00AM

Update... -- MP4VT2004 01/22/2019 1:57PM

Update #2...HOLY CRAP, what a day. -- MP4VT2004 01/23/2019 03:02AM

2 weeks ago, I noted my Auxiliary heat kept kicking in. It was in the 40s -- Stork 01/22/2019 4:35PM

Thanks for the replies, everyone! You guys are awesome. -- MP4VT2004 01/22/2019 12:23PM

This Business Major is sticking with the capacitor. ** -- Stork 01/22/2019 1:31PM

Still could be....see latest update above. -- MP4VT2004 01/22/2019 2:04PM

With the flux of replies, a reasonable call. ** -- MikeVT85 01/22/2019 1:55PM

Or maybe not a problem at all -- 81_Hokie 01/22/2019 12:00PM

I got this reply from a mechanical engineer friend who specializes... -- Spud 01/22/2019 10:45AM

...220/221 ** -- chumley 01/22/2019 10:39AM

Whatever it takes. ** -- Hokie CPA 01/22/2019 3:35PM

Take your thermostat off the wall and check for dust -- hoosnowahokie 01/22/2019 09:26AM

Blown capacitor ** -- Stork 01/22/2019 09:24AM

Or a johnson rod ** -- bigbadbird 01/22/2019 09:38AM

Or ball bearings. It's all ball bearings these days... ** -- EDGEMAN 01/22/2019 09:39AM

The refs. It's always the refs. ** -- TomTurkey 01/22/2019 10:05AM

It's the bypass line, not the Fetzer valve. ** -- Spud 01/22/2019 10:01AM

Most likely low pressure lockout due to extreme cold. Happened to me many -- pburg_hokie 01/22/2019 09:05AM

Guessing on electrical work is usually not worth it ** -- bigbadbird 01/22/2019 09:47AM

Could be outside breaker if there is one -- bigbadbird 01/22/2019 09:03AM

Or maybe not a problem at all

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