Question about Coleman Propane Forced Air Heater w/Electronic Ignition (50,000-80,000 BTU)

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I have a coleman natural gas furnance 75,000 btu model number 2865c666 the ignitor glows but don't ignite natural gas

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Gas valve if smart valve or sensor if it is not the control board

Posted on Dec 17, 2008

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Heater will not ignite


  1. Do you have a standing pilot style heater = Milivolt
  2. or is it an IID = Spark style ignitor
  3. Or... Hot surface Ignitor = glows red hot like an auto cigarette lighter?

Most common problem I have come across over the last few weeks, is pressure switch not closing, meaning - dirty filter. Try cleaning your filter: backwash or rinse cartridges.

  1. is pilot staying on, and burning well?
    1. If so, is htr's gas valve in ON position?
  2. Do you hear sparking?
    1. If No, then one of the safety switches is keeping heater from firing...
      1. Toggle switch - on/off
      2. Thermostat - turned up high?
      3. Pressure switch - closes circuit when pump comes on
      4. 2 each high limits
      5. Fusible link / roll out switch
    2. If yes, either gas valve is off, is bad or the Ignition module is bad? Some call it grey box.
      1. You will need to test for voltage at the common and MV posts of the gas valve - 24 to 28 volts. If voltage = bad gas valve; if no voltage = bad IID Module (Intermittent Ignition Device)
  3. Do you see a bright red glow in the burner tray area?
    1. If yes, either fuel supply is off, or Ignitor has worn out and the glow is not hot enough to ignite raw fuel.
    2. If no, check voltage at Ignitor - depends on make and model of heater- could be as low as 24 volts and as much as 110 volts. So... No voltage at the supply wires = bad sending component, again depend on brand and model, could be ignition module, could be circuit board?
    3. If yes voltage, bad Ignitor
      1. Again, this is if fuel supply is confirmed.
Good Luck

May 08, 2015 | Teledyne Laars Laars Lite 2 Pool Heater...

1 Answer

MY FURNACE MAKES A HUMMING SOUND WHEN IT COMES ON


Could be gas valve when energized
Make sure filter is clean,plugged filter will increase amp draw on MTR.

Jun 09, 2014 | Coleman Propane Forced Air Heater...

1 Answer

Hayward H400 error code IF (Ignition Failure)


yes, make sure you order the correct part, youll need the model number and serial number. the ignitor has 2 wires wrapped with white fibers, usually 2 screws to remove it, and theres only one way to plug it back in. NOTE: Ignition failure does not always mean the ignitor needs replaced. make sure your ignitor doesnt turn on and glow when you start the heater. if it does, youll want to clean out the gas orifices.

Apr 10, 2014 | Hayward H Series Pool & Spa Heater 400k...

1 Answer

Bake does not work


most likely you have a bad ignitor,this is the first thing that goes,if it glows and doesn't ignite the flame within 40 seconds after it starts to glow the ignitor is still bad even though it glows orange.if it's a flat ignitor it takes 3.2 amps for the ignitor to open the gas valve and ignite the flame,if it's a round ignitor it takes 2.5 amps to fire it up.you don't have to shut the gas down,if it's a fairly new machine no electricity will go to the ignitor either if it's shut off but you can shut the breaker down if you want.the machines are not like the older machines where you lite it with a match,they are electronic ignition so check the ignitor first,if it doesn't glow at all you can check the ignitor for continuity with a meter.if you need any more help send the full model number off of the machine,open the bottom draw under the oven door,look on the frame,left or right side and you'll see a tag with the model number on it.good luck and happy new year.

Dec 30, 2011 | Kenmore 79012 / 79014 / 79019 Gas Kitchen...

1 Answer

Heater blower goes on an smells like gas and doesn't light


The ignitor is not working. I don't know what kind of ignition your heater has but it is either a thermal ignitor or a spark ignitor. In either case the problem could be in the ignitor or the board that supplies the power to the ignotor.

First of all, be careful while looking into the system when the gas comes on because it could unexpectedly ignite and burn you.

If your unit contains an ignitor it should glow brightly when the gas starts. If it is glowing then it is probably not glowing brightly enough or not in the right place and therefore needs to be either replaced or repositioned. If it is not glowing then you should measure the voltage using a volt/ohm meter going to the ignitor. If it reads about 115 then the ignitor is broken and needs to be replaced. If it reads much lower voltage then the board that supplies power to it probably has a problem on it. It may be a defective relay, bad solder joint or some other problem. I would first re-solder the relay connections to the board and see if that fixes it. Otherwise the board will need to be replaced.

If the unit has a spark ignitor and you hear a spark sound it may be too low power or the spark probe might be in the wrong place and therefore not delivering the spark to the fuel air mixture. If you don't hear the spark then you may have a bad relay or bad solder joint to it.

Please let me know how this works out. Thank you.

Sep 03, 2011 | Hayward Gas Swimming Pool Heater 100k Btu...

1 Answer

Igniter was working fine my swquirrel cage blower was not working now blower is workig but igniter is not


Hi see if the ignitor is glowing , or has a crack in it jump out pressure switch see if it glows then , possable new ignitor

Feb 24, 2010 | Coleman Propane Forced Air Heater...

1 Answer

Heater sometimes ignites and goes out. it repeats this step several times. then it will ignite and the blower comes on. it is a natural gas 80,000 btu furnance/AC. about 5 years old. make Coleman


The flame sensor rod should be cleaned, if that doesn't fix it check the combustion air switch. There should be an error code, look for a blinking light and code chart under the filter door.  

Feb 11, 2010 | Coleman Heating & Cooling

1 Answer

Turn on green light flashes


Count the flashes before a pause. A steady on is bad ground or loose igniter. 2 flashes is either low gas pressure, bad flame sensor, gas valve wires loose or bad ignitor. 3 flashes is a bad pressure switch, or blocked vent. 4 flashes is a bad roll-out switch or open contact. 5 flashes is bad wiring to gas valve or flame sensor, 6 flashes is either a bad control board or bad thermostat.

Oct 13, 2009 | Sterling RF75 Natural Gas Heater (75,000...

1 Answer

Fan in furnance


any furnace with a blower will go on your electric bill but it really should'nt draw enough power to raise your bill noticably unless it's running constantly.

Jan 24, 2009 | Coleman Propane Forced Air Heater...

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