Question about Coleman Air Conditioners

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I have a Coleman Patio heater. The flames are very yellow & I don't believe it is sending as warm a flame as it should. Would like to know how to adjust air intake or similar to alter this. I am a plumber gasfitter by trade and do have an understanding of how it works.

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The primary air adjustment is located at the burner inlet. To little air and you have yellow flame. To much primary air and you get flame lift off from the burner. The adjustment may be locked in position by a screw. To change the adjustment you must loosen the locking screw.

Posted on Sep 14, 2008

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My Coleman Evcon furnace Model EB 12B will start out blowing warm air and then before it reaches the temp set on thermostat starts blowing cold air. We had the thermostat changed over the summer and the...


look at the furnace and turn it on to see if the flames come on. Watch and see if they stay on for a period of time. If they come on then go out you may have a dirty flame sensor, if it goes out and then relights it may be a high limit switch getting weak. hope this helps.

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Hi, I don't know if you are still having a problem, but it sound like the flame sensor on the unit is dirty and need to be cleaned. If it has a automatic pilot, it will have a flame sensor. Its made of porcelin with a metal rod coming out the end, laying next to the pilot flame. Just 1 screw holds it in place. Remove it and clean the tip with steel wool or a piece of sanding cloth. If you don't have this set up, I would need more info on the unit, model and serial number. You may also have a faulty thermostat, but I do believe it is a flame sensor.
Shastalaker7

Nov 21, 2011 | Coleman Mach III Air Conditioner

1 Answer

Our Rinnai Symmetry heater's flame will not go higher than 4 we have left it on for more than 3 hrs and nothing changes. It is only new with twice being lit, the smell is still there too.


If you are using the Thermostat Mode, the flame height automatically sets itself to the operate flame height and fan speed to maintain that temperature setting. However, when the pilot is lit each time, after having been turned OFF, the flame height automatically goes to the highest setting, then after a few moments adjust to what the microprocessor determines is the proper flame height, based on the thermostat setting. If the room is very cold, the flame height will remain on High until the room starts to warm up to the preset temperature. Gradually, the flame will lower, as the room reaches the set temperature, as will the blower speed.

As far as the odor is concerned. The unit may not have been continually burned on a high flame setting long enough (at least 1 hour) for all of the oils to burn Off and the unit cures. This should be done a fairly mild day, when a window can be opened to allow the odor to go out the window. If the odor continues, it may may be due to what Rinnia calls an "Abnormal Flame Pattern". Which can be caused by a misplaced log on the burner, poor gas pressure, a clogged burner or an obstructed exhaust vent. This requires a service call from your local Rinnai dealer to solve.

In case you have misplace your Owner's Manual, I have included a link to it that you can download & print for future reference. http://www.rinnai.com.au/images/stories/operating_instructions/Heating/Flames/Symmetry_Operation_Manual.pdf

I hope this helped you and thanks for choosing FixYa. Cheers...

Aug 05, 2011 | Rinnai Air Conditioners

1 Answer

Older coleman furnace in mobile home model 8631a was called by older couple who own it. Was told that standing pilot has gone out twice within two weeks never had problem before. Questioned owner if...


There is a coulpe of reasons that the pilot would go out.
1. Thermocouple is dirty, try cleaning it.
2. Thermocouple is no in the pilot flame. Look and make sure it is directly in flame.
3. Pilot dirty. Flame has to be blue not yellow.
4. At the gas valve the thermocouple comes to it. use a wrench, usally 5/16ths, or 3/8s in. and make sure thermocouple is tight going into gas valve.
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Sounds like a bad heat exchanger. The flame could be coming out, and throwing the Flame roll out limit switch. Could just be limit switches.

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I have a Dyna-Glo RMC-50LPT propane heater that is about 5 years old and I can't get rid of the yellow flames when it operates. I have tried: - removing the heater and blowing everything out with a...


Dennis easy fix what is your out going gas you will need a manometer to verify it accurately or adjust your gas valve til your blue flames are gone. Let me know what you find!

Dec 16, 2010 | Air Conditioners

1 Answer

The furnace will light up and the fan will blow but the flames cut out before my house reaches temp. i have the thermostat set at 70 and the house will not get above 55. i have tried turning the propane...


First, for those of you who might not know, "What is a flame sensor?" A flame sensor is a safety device. When your furnace's main burners ignite (light Up) the flame sensor picks up the heat from the furnace's main burning and says, "YES," and sends a signal back to the main furnace control board saying that it is OK to let the main burner stay on. Or if the main burners do not ignite, the flame sensor does not pick up the heat and says, "NO" to the main control board, Shut That Gas Valve and Main Burners Down! Thank God we have safety controls like the flame sensor. Most of the time, after turning your furnace's power off, you may clean the flame sensors with light sand cloth, emery cloth or steel wool. Reinstall the flame sensor and you are back in business! Over the years flame sensors can build up a light coating of burned-in dust and dirt. This insulates the flame sensor so that it doesn't sense the heat of the flame well enough, so by cleaning it you have almost restored it to its new condition. Seldom, but sometimes they do go out completely.

Dec 08, 2010 | Coleman Air Conditioners

1 Answer

OUR FURNACE IS DGAA077BDT AND IT IS PROPANE WITH ELECTRIC . IT WON'T STAY LIT. WE TURN IT ON. WE SEE THE YELLOW AND BLUE FLAMES AND THEN IT SHUTS OFF AND ONLY THE FAN WORKS. WHATS WRONG WITH IT?


sounds like a bad flame sensor try cleaning or replace if necessary it looks like a small metal tube on the side of the burner with 1 wire going to it .

Nov 16, 2010 | Coleman Air Conditioners

1 Answer

I have a vent-free Glo warm propane stove (as in fireplace type).Pilot is yellow and stays on enough to get fire going, but then whole thing shuts off. Does it need new part/cleaning?


Hi, and yes it does need to be cleaned. The pilot flame should be a nice strong blue with just a little yellow at the tip.You should have a flame sensor next to the pilot that should be engulfed by the pilot flame.Should be made of ceramic and have a metal rod coming from end into flame. Clean the metal gently with steel wool, not sand paper. Try this to see if it solves the problem and let me know if I am wrong as far as having this sensor. Clean pilot anyway, as flame is not correct.Get back to me, Sincerely,
Shastalaker7

Nov 18, 2009 | Air Conditioners

1 Answer

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Sounds like your flame proving device is not proving the flame. It is located on the last burner looks like a piece of thick wire sitting right beside the last burner. To Save you about 50 bucks service call take some steel wool and very gently clean the carbon that has built up on the surface of the device. Should only take 4 or 5 strokes.

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