I have a Coleman Evcon gas (propane) furnace. When the t-stat is switched to heat the furnace heats up but the blower will never turn on. The unit then shuts down and tries to cycle again. I have replaced the wall t-stat, but no change. Any solutions? Thanks
I forgot to mention that the blower works when the fan control is moved from auto to on and works when the t-stat is place in the cool mode.I forgot to mention that the blower works when the fan control is moved from auto to on and works when the t-stat is place in the cool mode.
I forgot to mention that the blower works when the fan control is moved from auto to on and works when the t-stat is place in the cool mode.I forgot to mention that the blower works when the fan control is moved from auto to on and works when the t-stat is place in the cool mode.
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Re: I have a Coleman Evcon gas (propane) furnace. When...
If the unit fires but the main blower fan doesn't come on the the unit is shutting off on a temp high limit switch and it sounds like the problem is the main blower fan motor or control
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i hope the heater doesnt come on when a limit switch is open,you really have problems. so a limit is telling you that your furnace it over heating. first check filter and heat vents and returns they must be clean and open. closing heat vent or blocked returns will cause over heating. after chacking this look at firing rate. furnace could be overfired. you would need a "u" gauge to check manifold pressure. your name plate will tell you what this should be. find the tap on the burner manifold or outlet of gas valve. fire furnace and see what it is. 3.5"wc for nat and 10" wc for propane maybe.
I have 2 of these furnaces in my mobile homes. The booster assembly that has thea clear hose attached to it has a small wheel in it. Remove the 4 screws to this assembly and give the wheel a push. For some reason these tend to hang up after a few years. Freeing this wheel will allow the motor to engage. Simple solution to spending big bucks on unneeded parts :)
If you are not getting any codes from the board, then the furnace is not getting a call for heat from the thermostat. A wire may have come off, the thermostat not properly wired, or a break in the stat wire. On a call for heat, you should have 24vac between W and C on the circuit board. This will let you know if you are getting a call for heat all the way back to the furnace.
put the just the fan on turn off the ac and the heat and just fan on make sure the blower motor works cause thats really the only thing you utilize from the furnace in the summer and let me know
then if so does your heat work fine
I forgot to mention that the blower works when the fan control is moved from auto to on and works when the t-stat is place in the cool mode.
I forgot to mention that the blower works when the fan control is moved from auto to on and works when the t-stat is place in the cool mode.
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