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Where do the wires for the thomastat go on the furnace

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Paul G

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There should be a terminal strip some where in the unit
You need to find this and tell me what you see or better still take a photo of it

Posted on Jan 15, 2014

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How do I wire a Coleman Evcon 3500A916 furnace Model


Wiring Diagram for a Coleman Furnace - RV-Coach Online

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... Furnace, Mark, 9-12-07. Need wiring diagram for coleman furnace Model # 7700B856 .... Amanda, 11-10-11. I need a wiring diagram for a Coleman evconpresidential model 7956c856 ... Need wireing diagram for coleman 3500a916 ... More results from www.rv-coach.com

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We are trying to install a new thermostat for our heating and ac. and the wiring colors are different.


Hello my name is Heath it will be my pleasure to assist you. Red wire to R terminal on the urnace and the thermostat. White furnace and the wire to W or w1 on the thermostat nd the furnace, Use the brown wire on the W2 terminal of the furnace and the thermostat., Yellow wire to the y or y1 terminal on the furnace and the thermostat, Green wire to the G terminal on the furnace and the thermostat, Use the black wire to common on the furnace and the C terminal of the thermostat, Use the blue wire on the Y2 terminal of the furnace and the thermostat if you have a two stage air conditioner.

Sep 11, 2011 | Heating & Cooling

1 Answer

How do you install the thermostat?


Hello my name is Heath it will be my pleasure to assist you. Red wire to R terminal on the urnace and the thermostat. White furnace and the wire to W or w1 on the thermostat nd the furnace, Use the brown wire on the W2 terminal of the furnace and the thermostat., Yellow wire to the y or y1 terminal on the furnace and the thermostat, Green wire to the G terminal on the furnace and the thermostat, Use the black wire to common on the furnace and the C terminal of the thermostat, Use the blue wire on the Y2 terminal of the furnace and the thermostat if you have a two stage air conditioner.

Sep 05, 2011 | Heating & Cooling

1 Answer

HELP!! New install of GMUH75-E3A - Main blower starts immediately on power up/ thermostat turn on. Burner never turns on/ignites. AC power is wired correctly and gas supply is connected. Switch is in the...


You need to find out if the problem is in the T-stat, T-stat wire or in the furnace you can do this in a few easy steps

 

Step 1- Unwire the low voltage from the furnace. Then turn the power back on and see if the blower comes on if it does then the problem is in the furnace and you will need to troubleshoot the furnace (see bottom of page for troubleshooting furnace) if it does not then proceed to step 2

 

Step 2- Wire the low voltage back up to the furnace (follow the wiring diagram below). And unwire the T-stat, make sure that no wires are touching each other, then turn the power back on to the furnace, if the blower starts then you have a short in the T-stat wire and you will need to pull a new wire. If it does not then proceed to step 3

 

Step 3- Turn the power back off at the furnace and wire the T-stat back up (follow the wiring diagram below). Turn the T-stat to auto heat 90 if the heat does not start but the blower just runs then you need to replace the T-stat.

 

 

troubleshooting furnace

 

http://www.hvac-for-beginners.com/furnace-troubleshooting.html

 

 

wiring diagram

 

 

 

 

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1 Answer

Water leak behind thomastat


check thermostat housing for cracks, also check for knicks in housing

Mar 17, 2010 | 2001 Pontiac Grand Am SE

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Hi Proper way on wiring furnace.


I can give you a start, For heat only, R terminal on furnace to Red wire to R or RH terminal on thermostat. W terminal to White wire to W terminal on thermostat. G terminal to Green wire to G terminal on thermostat. This will get you heat but not air conditioning.

Jan 06, 2010 | Goodman Heating & Cooling

1 Answer

I have a honeywell thermostat model # th5220d1003-0636 & need to know what connections to make for gas forced air heat.


This is a Focus Pro 2 heat,2 cool thermostat. If you are connecting this to a single stage(1 heat) residential furnace then your connections are: At the thermostat the R and Rc therminals are internally connected so you can connect your R terminal wire from the furnace to the R terminal at the thermostat(this is your 24 volt supply for both heating and cooling. The W or W1 wire (heating) from your furnace you connect to the W1 terminal at the thermostat. The W2 wire from your furnace(if your furnace is a 2 stage furnace) you connect to the W2 terminal at the thermostat. The G wire from your furnace(indoor fan) you connect to the G terminal at the thermostat. The Y1 wire(cooling) from your furnace you connect to the Y1 terminal at the thermostat. The C wire(common or neutral) from the furnace you connect to the C terminal at the thermostat.

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Where do i connect load wires to 240 volt baseboard heater


this is tricky to some you must connect heater to the load side of thermostat must will have a black set and a red set wires look at the directions to find the line side which you hook wires from panel to them I will tell you some switches are different so with out seeing the schmatics its hard to tell you email me a picof thomastat and i can tell you hope this helps

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I have a DuoTherm BriskAIr 13.5K BTU. The Dometic thermostat also controls my HydroFlame 8531-IV furnace. This morning, the furnace would not come on. I checked the wiring and there is no voltage at the...


If you look at control box at roof unit, they usually use a separate set of wires for furnace. See what colors they are attached to at harness to thermostat. Some just follow other harness, and come out at thermostat. (bypass control box) Once you've determined which 2 they are, join them together & see if furnace starts, as it should. If it does, thermostat is faulty. If not, pull outside cover off & check voltages at furnace. I'm guessing by furnace model that your unit is approx 30 ft , but if it's a park model, you may have 24 volt system on furnace or 12 volt. Another way of confirming is to go to back of furnace where air intake grille is inside your unit, and locate 2 blue wires going to furnace & remove whatever wires are attached to them & connect them together. Furnace should start up.

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Goodman GMP100-5 Rev Furnace Manual


I don't know where you are located, but there is a Goodman distributor in Sacramento, CA. Also in Ontario CA. They are a distributor so they may be able to help you or tell where to find someone who will help. Goodman is also known as GMC or Janitrol.

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