Heat Pump system with auxillary/back-up heat

Curious12February 1, 2013

I have a heat pump system with auxillary/back-up electric heat. The heat pump works great, but how can I tell the auxillary/back-up heat is working?

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tigerdunes

If you have modern type HP thermostat, there should be a light indicator that shows when your heat strip is activated. If your thermostat does not have that indicator, check your electric meter. When heat strip is activated, the meter wheel/disc should be spinning faster than you can see.

IMO

    Bookmark   February 1, 2013 at 1:42PM
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fsq4cw

If you have an in-door/out-door thermometer, stick the out-door sensor down a supply vent. When the aux/backup is on, the temperature should be higher than when just the HP alone is running. However, if your heat strips are staged, this may or may not be true.

SR

    Bookmark   February 1, 2013 at 4:04PM
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weedmeister

Set the thermostat to Emergency mode. That will activate the aux heating and deactivate the HP. If it blows warm air, you're ok.

    Bookmark   February 4, 2013 at 6:00PM
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tigerdunes

Good suggestion by weed...

    Bookmark   February 4, 2013 at 8:34PM
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cas20

Alternatively to weed's suggestion, you can crank up the heat by 5 or 10 degrees...this should also kick on the Emergency Heat.

    Bookmark   February 10, 2013 at 12:48PM
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countryboymo

Not always Cas20. I am sure there are some people that have thermostats with advanced settings and no idea about it. Some stats with outdoor temp sensing can have lockouts on the strips and pump at different temperatures. Right now its above the 35 degrees my strips are locked out at so they will not come on no matter what I set the temp.

Emergency mode is probably the easiest for sure test.

    Bookmark   February 10, 2013 at 6:07PM
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