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dturn85
Apr 18, 2012, 10:37 AM
goodman furnace approx 20 yrs old! wont come on to heat! its like its not getting command to heat! replaced thermostat! same thing! one time i recycled power from circuit board and it fired up while i was holding in safety switch! once i let go and put cover back on same thing! any thoughts????? thanks
Stratmando
Apr 18, 2012, 10:46 AM
If you hold the switch and it heats, looks like the element is good.
The thermostat usually connects the red(24 volts)to the w or white wire/terminal. I would jump at thermostat for a test or verify switching of thermostat contacts.
I wonder if the safety switch is to disable the unit if the cover is removed. check any switches and look for a diagram. 20 years ago the boards wern't too complicated.