Question about Carrier XHB123D X/Y Series Heat/Cool Air Conditioner

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Code 7 on coleman furnace

What are the possible causes for no ignition?

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  • Ken Bledsoe May 11, 2010

    Faulty ignitor
    Faulty circuit board
    Faulty pressure switch
    Faulty Gas valve
    Faulty Thermostat
    Faulty transformer

    you get the idea there are a few things that can cause the problem. As the process of lighting the burners have to be satisfied for a safe ignition.


  • Perry Putnam
    Perry Putnam May 11, 2010

    what kind of igniter? Hot surface(glow coil) or spark? Explain step by step what it does.

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  • 462 Answers

Dont forget faulty ground too. But by now I bet hes got this going.

Posted on Mar 30, 2009

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BGU10016A BLINKS CODE 9


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I have a coleman evcon gas furnace that keeps giving me an error code (Limit switch open, and sometimes it wont kick on when i get this code, I have replaced the Lower Limit Switch, and workd fine for a...


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.

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My coleman furnace lights and then when the fan kicks in the flame goes out and i get a trouble code of ignition what could cause this


HI 2 things try jumping out the pressues switch see if it lights check out the hotsurface ignitor seeif it glowing or cracked and check the flame sensor is clean

Jan 24, 2010 | Tools & Hardware - Others

2 Answers

Coleman furnace -- fan runs, ingniter won't light,


Hi,
The chances are that the furnace was running when the power went out. This will cause the high limit switch to cutout and needs to be manually reset.
You will find that switch in the blower compartment near the blower. Usually somewher near the highest point of the cabinet.
Push the little red button firmly till it clicks.
When the power goes out while the furnace is running the heat builds up because the blower shuts down immediately and causes this limit switch to cut out.
If you have a electric tester you can also follow the low voltage circuit till you find the open switch. Ther is usually a wiring schematic on the door cover of most furnaces.

I hope that this will help you to solve your problem!

Thanks for using Fixya!!

Heatman101

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Check inside the door panel next to the wiring schematic, you should find the diagnostic codes. Look up 7 blinks. This should narrow down the problem. ( It sounds like a bad hot surface ignitor).
Good luck.....

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Coleman furnace ignition failure


the only thing you can do is turn it off for a couple minutes and try again sometimes you get it to lite off on retry otherwise call tech

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Defective combustion air switch. The 3 blinks are an error code. You didn't say, but I'm guessing you have a Coleman Evcon. They had alot of defective Combustion air switches. Your specialists were not that.

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