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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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.

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Check spark wire if OK bad module

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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...

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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 Heaters

1 Answer

I have a 75,000 btu mr heater and the spark ignition doesnt work . do i have a bad circuit board?


Hi clean the flame senser blow the dust out of the heater check the fan switch might be dusty jump out pressure switch see if that helps

Feb 02, 2010 | Mr. Heater Natural Gas Garage Heater -...

1 Answer

Burners are only lighting half way and then gas cuts out. Then the system repeats it' self. coleman heater mod #7995856, serial #1287658845. this is pretty close or just like heaters used in RV'S


OK, the burners will need to have flame on the entire surface or it will trigger a sensor and shut-off. Get a brush and maybe even one of thoes can of air and blow off the burner. Stay away from the glow ignitor because that is very delicate. Once you get flame on all surface of the burners, the unit should stay lit.

Oct 19, 2009 | Coleman Propane Forced Air Heater...

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.

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Fans and igniter light but not main burner green


Hi clean the flame senser , check out the pressure switch jump it out see if it lights . check you have power to the gas valve

Oct 10, 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.

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