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bbarnesy's avatar
bbarnesy
Explorer
Sep 12, 2025

Suburban NT-20seq furnace will not light at all.

Fan and motor seems to be working fine, I have good spark at the igniter. Furnace will cycle 3 times than lockout. I hear a click from the gas valve when igniter starts but no gas/flame. Exhaust is c...
Asking for Advice
bbarnesy's avatar
bbarnesy
Explorer
Sep 13, 2025

Bought the camper new in 2019. So 6 years old. I have taken it all apart and have not seen any evidence of bugs. Will try actually blowing it out. Thinking of replacing gas valve next.

StirCrazy's avatar
StirCrazy
Moderator
Sep 14, 2025

ya, if you can't smell gas outside at the exhaust, that's a good place to start looking, does the igniter fire when you try to start it? 

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