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Have a 7900 Coleman furnace/ac unit want to hook up Ecobee 3 stat ,it only has red and white to stat ,need to decode numbers to colors ,late 89' model in mobile home.

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6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: pilot light is out of

The thermo couple or the gas valve itself is most likely bad. Cheap enough to start with the thermo couple.

Posted on Sep 08, 2008

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SOURCE: Need replacement glass for pilot cover of Coleman Presidential II

the glass is there as a service tool to veiw pilot and flame or relite just get a peice of sheet metal and cover hole with it ,it will work short term or long term

Posted on Feb 05, 2009

  • 11 Answers

SOURCE: Furnace not cycling properly.

you might want to check the filter, if the filter is restricting the airflow the furnace will over heat and it will shut down. if you turn it off and on it will reset it and it will try again. Pull the filter out half way and try that, if it runs fine then clean the filter or get a less restrictive one.

Posted on Feb 11, 2009

  • 1 Answer

SOURCE: How to wire a Coleman proprane furnace

do anyone know anything about a coleman furnace modle number 9210

Posted on Jul 20, 2009

  • 588 Answers

SOURCE: Need a schematic for Coleman 6759 mach 3

COLEMAN R.V. PRODUCTS
GO TO rvcomfort.com
Click on RVP (RV PRODUCTS)
Click on type of AC, if you can’t find the information you want there,
then click on contact us on the Green Bar.
You can get Service Support or Email address and Phone numbers.

Posted on Aug 21, 2009

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Coleman mach 3 with airxcel t-stat that was plugged into a receptical with an ungrounded leg


possible feedback to control board try grounding whole unit and thermostat

May 20, 2018 | Coleman Heating & Cooling

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Do I need a outside cooling unit for a Coleman 7900 Presidential lll gas heat and cooling unit


Yeah, youd have to look at the model on the Indoor coil box, furnace will be setting on top of it. Youll need the model off that coil box to get the correct tonnage of the outdoor condensing unit, you can go 1/2 ton smaller on outdoor for greater efficiency.

Feb 12, 2015 | Coleman Heating & Cooling

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I upgraded my thermostat to a digital one. when i removedd the old one only the red and white wires were used. i also replaced the thermostat wires. i hooked up all the wires according to color red to r,...


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As your unit had just 2 wires, Red and White, you had just heat only with no AC and no fan on as described as you have no green circuit wired up at the furnace or thermostat, you can add a relay if not equipped but that would make your unit very old.

Oct 19, 2013 | Heating & Cooling

1 Answer

We are trying to install a HoneyWell programmable thermostat (model RTH6350) and the colors do not match up. We have an orange wire, blue wire and white wire without a connection. It says to wrap the O,...


T-stat wiring is commonly connected with the following color codes:

On a straight heat and cool system:
White = W on T-Stat
Yellow = Y on T-stat
Green = G on T-stat
Red = R on T-stat

On heat pump systems:
Blue = W2 on T-stat

There is no guarantee that your system is wired using this system so you will need to look in the furnace and see where the wires are connected to. You will have another set, probably 2 wires, going to your outside A/C unit. They are typically red and white but could be any color as long as they are hooked up to the same connections. I.E. blue on R at t-stat and to R on furnace would be OK, it just makes it harder to service the unit if you don't know what wire is for what.

Just check your furnace connections and connect the same wires to your t-stat no matter their colors.

Jun 14, 2011 | Honeywell Heating & Cooling

1 Answer

How do u wire athermostat to the furnance and ac unit on model e3eb-015h nordyne


You need to get low voltage wire known as 5 wire. run wires thru wall to stat and furnace Red wire goes to R terminal white to W terminal Green to G terminal Yellow to Y terminal on both the stat and furnace circuit board. Now you need a wire called 2 wire low voltage wire run that from furnace circuit board to outside A/C. At furnace hook red wire to Y terminal and white to C terminal doesnt matter which ones you hook up at outside unit. Do it just like i told you this will work properly.
If this helps please rate me.

May 20, 2011 | Heating & Cooling

1 Answer

I hooked up a coleman electric furnace to a janitrol condenser heat pump . The t-stat wires on electric furnace are red white green and yellow. I added a blue for common off of transformer for digital...


Hi, first of all you need to get a hand full of 5 amp auto type fuses and install one on the hot leg of the 24 volt secondary side of the transformer. Just use 2 female crimp on connectors and put the fuse in the middle of the hot wire. Saves $$$$ on replacing transformers when you have a dead short on the low or high voltage side of any transformer, just a trick of the trade, food for thought. Fuses are much cheaper. On your electric unit, you may not need the common on this to operate the digital stat if it has batteries. This may be your dead short. On the Janitrol condenser, the red is your 24v as you no. They are using blue in place of yellow for cooling. Red is hot, W is heat, G for fan, and blue is cooling on this Janitrol. Keep in mind you are connecting to a heat-pump also, so make sure the wiring is correct. Are you installing this for secondary Heat?? More then likely, the blue common you have added is the dead short as the janitrol uses the blue for a cooling relay in place of yellow. Anyway, use the 5 amp fuse, trick of the trade to save on the transformers. Please keep me posted, as I know know you have this under control.
Shastalaker7
A/C, Heating, & Refrigeration Contractor. Good Luck!

Feb 09, 2011 | Coleman Heating & Cooling

1 Answer

My honeywell t-stat reaches current temp setting and furnace kicks off...but within 1 minute the t-stat drops 1 degree and the freakin furnace kicks on! This can't be right as it has never happened with...


Your differential is set to close you can go into tstat and change differential setting. Your install manual for your thermostat will tell you how you can set 1.2.3 degrees differential

Dec 13, 2009 | Honeywell Electronic Programmable...

1 Answer

Thermostat Wiring Problems!!!


. your blue is probably common and if you hooked it to Y you shorted the transformer or blew the low voltage fuse. Green is fan, yellow is AC, Red is 24volt. Is it a heatpump or just ac? I think its probably a heat pump and your brown is your Reversing valve it needs to be hooked to O on the new stat. If its a heatpump your tstat must be a 2heat 1 cool stat w/ aux heat. Without knowing what terminals the wire were hooked to on the old stat you may have to look at whats hooked up at airhandler( furnace) and on A/C (heatpump) tobe able to determine what goes where on the new one.

Sep 20, 2009 | Heating & Cooling

1 Answer

My problem is....On my new Honeywell RTH230B thermostat the color code is Rh, Rc, W,Y and G. My wire colors are red, orange, blue, white and black. I can obviously match up 4 of them but where the heck...


First you are using abnormal wire colors for a furnace. Second.... if you have an air conditioner hooked up to this furnace, you will need to install a jumper wire between rh & rc. I am assuming this is a natural gas furnace. Usually the red wire to R terminals. Usaully the white wire to the W terminal. Take the door off of the furnace. Find the thermostat wire connection in the furnace. What ever color wire is on the R terminal in the furnace should hook to the R terminal on the t/stat. Whatever color is on the W in the furnace goes on the W on the t/stat. Whatever color is on the G terminal in the furnace goes to G on the t/stat. And the Y in the furnace to the Y on the stat. and the G in the furnace to the G on the stat. Most applications use only the R, W, G, & Y ( always put the jumper wire between Rh & Rc)
Good Luck
Hvac Teacher

Mar 26, 2009 | Honeywell Programmable Thermostat Heater

2 Answers

How to wire a Coleman proprane furnace


I just bought a houseboat with the same furnace in it.  I will check it this weekend and provide you with the wiring directions should you still need them.

Mar 07, 2009 | Coleman Propane Forced Air Heater...

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