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Sound strange Thermostat is low voltage. The surge is from the wall panel

to the breakers at your heat pump. They're there so the unit can be serviced without getting into the house.

While there may be a short, it will have nothing to do with the thermostat. If the outside breakers break, there is a surge that pops the breakers.

OTOH, why would the larger amp breakers blow? Seems like if anything, they'd stay closed. Maybe the wires are now getting overheated between the panel and the heat pump breakers.

(In response to this post by Hokie Golfer)

Posted: 01/05/2018 at 1:48PM

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Current Thread:

Electrical question -- Hokie Golfer 01/05/2018 1:27PM

My fix for that one time was tightening the breaker connections. The -- IB4TECH 01/05/2018 8:57PM

If they are telling you have a short somewhere that is bad as -- fordham 01/05/2018 3:00PM

I think you need to give it some 220.... -- Freddyburg Hokie 01/05/2018 2:52PM

Rule these out.... -- No1Hokie 01/05/2018 1:57PM

Good googling! ** -- HokieSignGuy 01/05/2018 2:14PM

Just send the wifey out next time? ** -- FfxStationHokie 01/05/2018 1:55PM

I would at least suggest you make sure the circuit breaker is rated -- HokieSignGuy 01/05/2018 1:48PM

Sound strange Thermostat is low voltage. The surge is from the wall panel -- 48zip 01/05/2018 1:48PM

Those breakers will blow anytime eitehr a short to ground happens, or -- HokieSignGuy 01/05/2018 1:50PM

Agree, but larger breakers shouldn't be smaller than required for HP. -- 48zip 01/05/2018 1:56PM

When the breakers were changed to a higher rating, was the wire changed too -- Tafkam Hokie 01/05/2018 5:04PM

The key is the fact that is only fails during extreme weather -- NWHokie 01/05/2018 1:42PM

If it was only winter, a lot of heat pumps have auxiliary -- RTFC 01/05/2018 4:19PM

I can’t help you & I’m sorry for your trouble but that seems like a crazy -- Hoakie82 01/05/2018 1:37PM