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-   -   Snyder General 1990 GUH furnace ignition problem (http://www.diychatroom.com/f17/snyder-general-1990-guh-furnace-ignition-problem-120685/)

tkacer 10-20-2011 12:19 PM

Snyder General 1990 GUH furnace ignition problem
 
PROBLEM: Main burner shut off as soon as blower turns on :(

DISCUSSION: I've checked the users manual and installation instructions concerning the above problem. I replaced the flame sensor after cleaning it off did not solve the issue. As soon as the fan and limit switch (older dial type) clicks to turn the blower on, flame goes out. At this point am I left with replacing the ignition module as the only possible solution left????

Thanks for the help!!!

JJboy 10-20-2011 01:03 PM

fan limit swtch

tkacer 10-20-2011 01:20 PM

I thought the fan limit switch only controlled the blower fan. The main blower does turn on when it clicks at the on temp setpoint. Please elaborate - sorry for any obvious ignorance on my part....

JJboy 10-20-2011 06:25 PM

Quote:

Originally Posted by tkacer (Post 752876)
I thought the fan limit switch only controlled the blower fan. The main blower does turn on when it clicks at the on temp setpoint. Please elaborate - sorry for any obvious ignorance on my part....


Check this link ==> http://arnoldservice.com/fan_blower_controls.htm

thestig3 10-20-2011 08:42 PM

Your combo fan/limit does both. If your "fan on" setting is set too close to the limit setting it is possible to kill the burners and energize the fan. That's what it's designed to do.

ben's plumbing 10-20-2011 09:56 PM

you could jump out the limit and see if problem changes... i do not think you have a bad ignition since burnners lite as they should ????


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