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Gas heating/electric a/c unit

Can a gas heat/elect a/c central unit t-stat be temporarily bypassed until it can be replaced, and controled maybe by a circuit breaker? To get temp relief from this heat? Thanks

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YES! just remove the cover and you'll see 4-wires r-red=power g-green=fan w-white=heat &y-yellow=cool: just take a jumper wire and connect r-to- g and y...!_

Posted on Sep 09, 2008

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How do I wire a central heating room thermostat


You didn't mention if you had electric heat or gas heat. If you have electric heat you must move a wire on the thermostat to make the fan come on. Most all wall stats come ready for gas heat. No need to make a wire change for gas. Anyway I have a diagram of a typical central unit HERE

Nov 19, 2010 | Heating & Cooling

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Connect my 24 milivolt gas (between the studs) wall furnace ( in my hall) to my thermostat that operates my electric heat central unit. problem: to sync both units to give home more balance ( hall is...


the first problem is you need a milli-volt t-stat and your central has a 24volt t-stat if you connect the 2 it will fry the controlls in the wall heater the second problem is t-stat location if the wall heater is near the central heats t-stat it will shut off the central to soon . maybe relocate wall unit to coldest room ?

Nov 16, 2010 | Honeywell Heating & Cooling

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I have a heating unit and trying to wire thermostat got 2 white wires, a red and a clear. where do they go


Hi, with just a heater and no air, the red would be the hot wire which goes to the R terminal on thermostat and clear which are normally white will go to W on the stat. If you have a heat only stat, it should have only the R and W connections. If a central heat and air stat, wire it the same, but you may need a third wire for the fan if it is forced air. You would be better off running down to the hardware store and getting a 24 volt heat only stat. I don't know what kind of heater you have, but make sure of the control voltage of the unit. Most gas, heat-pumps, gas & electric are 24 volts ac. Some heat only units are milivolts. Anyway, connect the 2 as I have said. Before you wire the 2 wires to the stat, touch the 2 together and watch to see if it fires up. It may have a delay, but should fire right up if the heater is working right. No danger of shock as this is very low voltage, nothing to worry about when testing. If it is a central type gas furnace, the voltage will be 24 volts. Please rate me on this as I know you will be kind. I chose not to charge you for my time on this thread. Keep me posted.
Sincerely,
Shastalaker7
A/C, & Heating Contractor

Oct 22, 2010 | Heating & Cooling

1 Answer

Replacing a Coleman with a Duotherm, can the same thermostat and controls be used?


Hi, yes you can use the same thermostat if you are replacing the unit that has the same sequence of operation. What I mean is, if the old unit is a gas fired furnace and outdoor condenser split system for the a/c you can use the same controls, or if its a package unit. Now, if you are installing a heat-pump unit in place of a gas fired central unit, you will need to pull more stat wire and buy a heat-pump thermostat to make it run.
Shastalaker7
A/C, Heating Contractor

Oct 12, 2010 | Coleman Mach III Air Conditioner

1 Answer

I replaced a Lennox DSL-450LX heat pump thermostat with a Honeywell RTH3100C. Everything works except the gas does not ignite when set to emergency heat. The Lennox was wired as follows: W = white wire Y1...


Hi, If indeed you do have a heat pump, there wouldn't be any gas involved as a heat pump runs on freon with a reversing valve and heat strips for aux and emerg. heat. For gas electric operation thermostat terminals are rc to rh with factory jumper. Red wire to either.W to W for Heat, Y to Y for cooling G to G for Fan. If you have a blue, you wont need it unless this is a commercial stat useing a common for the Led lights on the stat. The unit will get its 24volts through R terminal in combination with y,w,and,g. Cant be a heat-pump if you have a gas furnace.Wrong t-stat. You need a gas /elect stat. And on a 24volt programmable t-stat, the batterys are used for the program only.If the batterys die, than you will loose the program on most residential stats. On commercial stats with the common in play, when batters die the stat defaults back to the factory settings.If you had a Lennox heat-pump stat on a gas/elect unit, you need to change it. Someone was using what they had on hand. Let me know if this has helped you.I will be here if you need me. Sincerely,
Shastalaker7

Nov 17, 2009 | Air Purifiers

1 Answer

I had a vulcan central heating unit that was made in 1990. Could you please tell me what the model number is on a 1990 vulcan central heating unit. Thanks, Rob


Hi Rob, The number you have listed AUW230A may be the model number. You say its a central heat so, If it is a package unit, the model, serial, and all of the ratings would be on the unit near the elect box on a package unit.I do know by the # you gave me it is a Vulcan 3000 watt thermostatically controlled Immersion heater. Here is a link I can give you, they deal with this heater for parts Ect. that maybe of help to you, it is www.grainger.com. There are many model # and I believe this is it, AUW230A. I hope this helps Rob, Sincerely,
Shastalaker7

Nov 17, 2009 | Vulcan AUW230A Heater

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I suspect a bad fan relay or bad fan control. Maybe the longer the control or relay is in the on position the more chance of it sticking on.

Oct 17, 2009 | Bryant 462AJC021BA Air Conditioner

1 Answer

No heat coming from central air unit when heat is turned on.


check t stat make sure its set up for you system some stats have to be set up for a heatpump or iits gas or electric heat

Feb 25, 2009 | Heating & Cooling

1 Answer

Thermostat not firing central heating


the stat works using a bi metalic strip so that click you here is making a contact and telling the boiler to call for heating so if you getting no click you need a new room stat. Replace with same model and note the wiring most stats only use 2/3 wires depending on system

Dec 08, 2008 | Dayton Electric Heater

1 Answer

Maytag Neptune Gas Dryer


You have a Hi-Limit t'stat located at 12 o'clock on the flame shroud. A safety fuse is also located on the flame shroud at 1 o'clock. The flame sensor is located at 9 o'clock on the flame shroud. The Hi-Limit can be temporarily bypasses for a quick check, as well as the fuse, but do 1 at a time. Be sure to unplug the dryer before testing.

If that doesn't help, let me know if you need more assistance.

Dave E. (Illeagle)

May 30, 2008 | Maytag Neptune MDE5500AY Electric Dryer

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