Question about Honeywell Programmable Thermostat Heater

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Heat will not turn on after I took it down to paint the wall

I think I might have put it together wrong or maybe shorted out the wiring but the heat or air will not come on. What do I do?

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If you didnot shut thew power off to your furnace before taking the t-stat off the wall then you probably shorted out the transformer in the furnace. the transformer supplies the system with 24v including the t-stat and can short out easily without sparks.

Posted on Nov 26, 2008

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I need to know if a double pole 30 breaker acts as a jumper from 1 hot bar to the other.


1) Copy following links:
http://waterheatertimer.org/See-inside-main-breaker-box.html
http://waterheatertimer.org/images/Inside-Main-Breaker-Box-8-8.jpg
http://waterheatertimer.org/Color-codewire.html

2) Double-pole circuit breaker snaps down over both hot busbars.
Each busbar supplies 120Volts, and each busbar is out-of-phase with the other busbar. Together, the two 120volt out-of-phase wires have 240Volt potential.

3) Does the double-pole breaker act as a jumper?
No.
Typically a 'jumper' wire bonds two electrical connections together so power flows between the things that are jumpered together.
If you 'jumper' one busbar to the other busbar in live 240V split phase panel, it will short out.

4) 240Volt circuit requires two hot wires. One hot from each busbar.
When the two hots are applied to two screws on a heating element, that action will complete circuit, and element will heat.
Instead of shorting out, the element has resistance in the form of a coil of wire that impedes the flow of current and converts the electric current into heat at the element.
This is same as filament inside light bulb.
If the element does not have resistance to impede current, then the two hot wires in the 240Volt circuit will short out and cause flash of overheating and burning that will burn out element. If element does not burn out immediately, and short continues, then the wire connected to circuit breaker begins to heat. When heat on wire exceeds circuit breaker rating, then the breaker trips off.
Circuit breakers are triggered by heat.
This is why wire size and breaker size must match.., to avoid overheated wire inside wall that will catch house on fire.

Dec 23, 2012 | Electrical Supplies

1 Answer

Have a overhead natural gas Hot Dawg heater, came with garage no previous owner help, no book it is a 48000 btu I believe. Prevoius owner had done some painting and heater had paint residue on it. I tried...


Remove all the burner tubes. Get a soft bristle brush and clean the orifices real good for each burner. Then remove the rust from all the burners with a wire brush and blow them out. That is what I would try first.

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Polohunt1@aol.com my bionaire bch9221 120 volt heater does not produce heat anymore.....i'm thinking that maybe an element within the unit is burned out.


Mine was doing the same thing. Took it apart and found that the white wire which hooked up from the circuit board to the heating element had burnt which broke the connection...hence no heat....replaced burnt wire and resoldered to heating element...put it back together and voila I have heat once more....still doesn't solve why the wire fried though....

Oct 13, 2010 | Bionaire Heating & Cooling

2 Answers

My Cozy Wall Heater won't turn off! Even when the thermostat is in the off position it just keeps running. I need to physically turn off the gas supply to get it to stop. When it turn it back on i need to...


If the unit has a wall thermostat, remove one of the wires from the thermostat. If the unit stops it indicates a bad thermostat. If it continues to heat, remove one of the wires coming from the thermostat going to the gas valve inside the heater. If it continues to heat you have a bad gas valve. If the heater shuts off, you have a bad thermostat wire (short).

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1 Answer

RTH2520B Honeywell Programable Thermostat wires


Hi soozankrayg!
Your problem should be pretty simple. (assuming that it is a typical 24volt system) you should hook up the black wire to the "RH" terminal and the white wire on the "w" terminal. Make sure that you turn off the power to the furnace at the breaker or the furnace itself before attempting this. The reason for this is that you can cause a short and either break the fuse at the furnace or burn up the circuit board. This can happen very quickly and is very common when a thermostat is removed.

Jan 28, 2009 | Honeywell Programmable Thermostat Heater

1 Answer

Maytag Dryer working but not heating up.


possible air flow problem,, check exhaust hose and sure not clogged up needs air flow, if long dry times repl/ coils/ only on gas models /if electric./ repl/ hi limit thermostat,// and safety thermostat ,,u need 240 volts 120 to turn on dryer and another 120 to heat ......

Nov 30, 2008 | Maytag PYE2300AY Electric Dryer

1 Answer

Wall heater does not work


Hello drfixsit,
I can only make assumptions on your setup based on your description. I am assuming you are referring to a gas wall heater that has an electronic ignitor and that you shorted the thermostat wire leads together to simulate 'calling for heat' .. If that's correct, then here's a few things you can try.. If you can open the wall heater access panel to see where the burner is, you should see some kind of igniter there too.. Rather than short the wires at the thermostat, why not ,...make a wire jumper at the heater itself and short across the contacts of where that thermostat would plug in? By doing that, you take the wiring out of the equation.. A short across the thermostat terminals at the heater should turn th eheater on and call for heat.. If everythings working, you should get gas into the burner and the ignitor should provide a spark to get a flame established.. I hope I helped you.. if not.. please elaborate on whats actually happening or where I am wrong..
Regards,
Rick

Nov 29, 2008 | Heating & Cooling

4 Answers

Keeps shutting off


I have a LASKO 5565 model fan and had a similiar problem. Cleaned the whole unit, thinking it was tripping the safety breakers, and it still would turn on and off. The control console was completely unusable. So then I thought that it was maybe the squat switch located on the bottom of the unit. I quickly deduced that not to be the problem and continued following the wiring. Just above the fan there is a 1/2"X1/2" thermostat. Upon touching it I almost burned myself. For some reason the unit was grounding here and cause the thermostat to heat up and shut the unit off. I took the thermostat out of the equation and the unit works great.

CAUTION: If you pursue this action you must understand that you no longer have a thermostat and the unit is now simply just a heater. It will either be on at full blast heat or it will be off. Good luck.

Dec 23, 2007 | Lasko 5540 Ceramic Compact Heater

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