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

1 Answer

Coleman furnace blower runs continuously

Have a Coleman Evcon Propane unit and the blower runs continuously (and combustion blower). I have done the following.
-Disconnected thermostat wiring.
-Check function of both limit switches.
-Centrifugal switch on combustion blower working.
-Gas valve working.
-Not sure about glow igniter. Reads resistance. Circuit board sending about 2V. Doesn't heat up.
-Circuit board LED indicates no problem (continuous).

Any ideas or other checks?

Thanks
Russ

Only way to make blower stop is to turn off power.

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  • 4 more comments 
  • BillyGunn Jan 18, 2008

    I have the problem with my Coleman Evcon furnace and like Rusty went thru the same diognostic test and still can't find the problem. Any answers?

  • Bob Meinholz
    Bob Meinholz Nov 07, 2008

    I too like Rusy and Billy Have this same problem and I have gone through the extensive diagnostics that Rusty has. Let me add the main blower will cycle (shut down when up to temp) for a couple of seconds and then restart again but never completely shuts off or cycles like it shoud.(Yes I thought High/low limit switches the same way and both test good). Is this problem in that circuit board somewhere or ????????? Let me know I've been chasing this one for over a month now and the hours on that motor are piling up.

  • benazlin Dec 06, 2008

    I have a similar problem. I've just replaced the circuit board on my coleman model #BRCS0241BB with a retrofit. It didn't come with a diagram, of course. I got the heater to work, but when it hits the setpoint the gas shuts off, like its supposed to do, but the fan keeps running. It'll blink 4 times, which is supposed to be open limit switch. I bypassed that switch and the same thing happens. I'm at my wits end. Any suggestions?

  • tart5 Dec 09, 2008

    have the same problem,mine is still under warenty should i just insist that thay replace it.

  • Anonymous Dec 18, 2008

    I too have the same problem as Rusty, Billy, and the other two. Have replaced the limit switches to no avail. (My furnace in not fuled by propane) Please help!

  • Anonymous Mar 26, 2014

    I have a travel trailer furnace that was working properly until I changed the propane tank and now it will not ignite. the thermostat is working, the blower comes on but no heat.

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You should be seeing 120 volts to the igniter. Anything less requires either a replacement of the transformer, start relay or control module.

Posted on May 30, 2008

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