Auxillary Heat

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Old 12-11-13, 06:54 AM
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Auxillary Heat

I recently installed a Honeywell TH5220d1029 thermostat. The thermostat is running the auxillary heat even when the indoor temp is where I have it set at. It is running this along with the heat pump, and now we're having some issues with the heat sensor and fuses within the auxillary heat system. Any advice is appreciated.
 
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Old 12-11-13, 07:14 AM
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By the way, here is how we've got the setup programmed. It did not give us all the options, it skipped over a few numbers I assume because of the setting we chose.

1-5
2-0
6-9 (I just changed this to 3 before posting this second comment)
9-3
12-0
14-0
15-5
26-1
27-90
28-50
 
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Old 12-11-13, 05:55 PM
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Sounds alot like a failing heat sequencer in your air handler to me.

How long ago did you install the stat?
Did this problem immediately occur when you installed the stat?

I see that you set 2 to 0.
What brand is your outdoor unit? (This would be an incorrect setting for Rheem, Ruud and Weatherking heat pumps)
 
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Old 12-14-13, 08:35 AM
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We have a Trane system. It is an ongoing problem. We have replaced the fan, capacitor, and the heat sequencer. At this point, Our fuse links are blowing at an average of around every 3 days, and the cost is starting to add up.
 
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Old 12-14-13, 09:11 AM
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On our air handler, our supplementary electric heater is BAYHTR1405
 
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Old 12-14-13, 10:24 AM
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The problem should be diagnosed with a meter before throwing more parts at it.
Is 24 volts present between W and C at the air handler with the stat turned off?

If it is present we must find out if this voltage is coming from the heat pump or thermostat wiring.

After that it should be proven if the wiring or control is the problem...
 
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