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Nest E worked but then flipped breaker for Handler, which will not flip back on

Nest E worked but then flipped breaker for Handler, which will not flip back on


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Old 01-02-18, 04:12 PM
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Nest E worked but then flipped breaker for Handler, which will not flip back on

We installed the Nest E today. It worked fine but then when we went to retrieve the KEY code, it said error 195 and our breaker for the air handler was flipped to off and will not stay on. Had all wires connected except C and O/G. Any ideas on how to fix this?
 
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Old 01-02-18, 04:19 PM
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What type of system ?
Heat pump with or without backup electric.
Gas furnace with split A/C.

The nest E wiring cannot cause the air handler to trip a breaker. It could blow a local control fuse but not the main power protection.

Did you have the breaker off to do the wiring and now it won't reset ?
Make sure to push it to off and then turn on.
 
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Old 01-02-18, 04:26 PM
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We have an electric A/C and heater with handler next to thermostat. I am not familiar with your terms (sorry)

We had the breaker off while installing and then turned it back on and all was working fine...then got error 195 code for Red wire and noticed the breaker was flipped. It will not go back on. It immediately flips back to off.
 
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Old 01-02-18, 05:01 PM
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What do you have for wiring on the nest ?
Should be at least using the R, G, W1 and Y1.

Y1 is for the A/C compressor. Not used for heat.
O/B is only for a heat pump.

The nest wiring shouldn't be causing a problem. You may have incurred a short in the electric furnace coils. Strictly a co-incidence.
 
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Old 01-02-18, 05:24 PM
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Yes those are all wired. It is so odd becuase it literally worked when we installed it, but with the cooler weather today (in south florida), it was not running a lot and then I went to look for the key code, and the error code 195 was there for the red wire. Then, we noticed the breaker not turning on. We did the troubleshooting for the red wire and because the compressor will not go on, we cannot get rid of the error code. Do you have any suggestions on what we should do next?
 
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Old 01-02-18, 06:18 PM
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When you say "breaker not turning on" you mean when you try to turn it on it won't stay on. Is that correct ? It keeps tripping ? There should be a big breaker in the electric panel for the furnace and one on the front of the furnace.

The compressor has nothing to do with the problem. If you can't reset the large breaker that runs the electric furnace then there will not be any 24vac for the thermostat. Something caused that large breaker.... I'm guessing a two pole 40A breaker to trip. It's not the thermostat wiring. A shorted electric heating coil could do it.
 
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Old 01-03-18, 05:38 AM
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Yes, that is what I meant. We put the old thermostat back on and everythign is fine now so it was the Nest causing the issue. We are going to return it but thank you so much for your help!
 
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Old 01-03-18, 08:28 AM
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Sorry.... but something is not making any sense there.
 
 

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