Why does my Suburban furnace refuse to ignite?

10 ) I figure the sail switch and any limit switches are okay OTHERWISE the gas valve would never open nor would the HV create a spark. Fan runs, gas valve opens, HV ignitor throws a spark (albeit looks weak), get smell of gas out exhaust BUT THE DARN THING REFUSES TO IGNITE. I’m thinking maybe an ignitor problem?????????

Is there a manual for igniting a suburban furnace?

THIS IS NEW BOARD THAT ACTED SAME AS OLD ONE. 6) I tested continuity from HV wire end to igniter tip and it was good with no breaks as wire was flexed around. 7) YES I have a manual but its troubleshooting isn’t much help other then needs a new board.

How does the furnace work in a suburban RV?

When the furnace does light, it runs normal and runs until the desired temp is reached and then shuts off like it should, however it only does this for 5 or 6 cycles and then at some point the blower comes on you can hear the igniter clicking but the burner does not ignite it runs thru its normal 3 attempts to ignite and then the furnace locks out.

Why is the spark rod on my Suburban furnace not igniting?

It sounds something like the spark rod is a little dirty. The 1/8″ gap is normally not real critical, but try to get the gap as close to it as you can. You can also make sure the ground wire has good connections on both ends.

What should I do if my Suburban furnace wont ignite?

Here’s what I’ve tried so far prior to giving up and drinking but that time is getting close lol 1) Turn T stat on and raise temp, so it delays then fan runs, gas valve opens (smell gas outside) but it failed to light after a couple tries then locks out and gas valve closed.

Do you have a bad gas valve on a suburban furnace?

You probably have a bad gas valve. Getting to the gas valve on Suburban furnaces is a real pain, not so bad on the Atwoods, but you still have to check it, not simply throw parts at it. By the way, never take a gas valve apart, unless working as part of a demolition team.

It sounds something like the spark rod is a little dirty. The 1/8″ gap is normally not real critical, but try to get the gap as close to it as you can. You can also make sure the ground wire has good connections on both ends.

How big of a gap does a suburban furnace need?

The 1/8″ gap is normally not real critical, but try to get the gap as close to it as you can. You can also make sure the ground wire has good connections on both ends. Thanks Tom, after I took a nap I went back down and this time fully removed the ignitor assembly and burner so I could get at things.