PDA

View Full Version : Furnace will not ignite


lukeg1
Sep 22, 2009, 08:26 PM
I have a goodman furnace modle# gupi100-4 the problem that I am having is when you turn the furnace on the induce draft motor come on the ignition comes on for a couple seconds and goes off and it keeps going on and off and never lights the furnace.I have replaced the draft motor,pressure switch and limit switch.It worked for a day and started doing the came thing

hvac1000
Sep 22, 2009, 08:52 PM
Try cleaning the flame sensor well with sand paper or steel wool.

dac122
Sep 23, 2009, 06:22 AM
Couldn't hurt to verify you have no blockages in your intake or exhaust. Do you have power to the gas valve to actuate?