My Goodman furnace will light, but only stay on for a few seconds. I have cleaned the flame sensor and tried a different one. Everything else seems to work normal (exhaust and blower fan), and there are no codes (light is steady). Any suggestions?


I can't say for sure, but it could be a high limit/fan switch....maybe the board? Might try the limit since it's cheap and if that doesn't work call a tech.

Updated on January 8, 2018

Original Article:

How to Diagnose Furnace Problems & Why Red Light Is Blinking
By Dan Robbins

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