My Atwood Furnace will turn on, I hear the spark and that ignites the burner. I immediately begin to feel heat come from the exhaust outlet. This runs for 30 seconds, and then the 10amp breaker trips. I have tried several suggestions I have read on the board already. Here's what I know:It is not the propane tanks, they are fullIt is not the propane mixture, I have a solid blue flame on my stovetop.I have reset all the breakers, turned everything off and back on.I have two new batteries. They were installed earlier this week and are holding 13.4 volts running in series.I am plugged into 110V AC, but the same problem occurs if I disconnect and run only off battery.All my other propane appliances work as they are supposed to.I have used my air compressor to blow out the outlet. I have also disconnected the circuits on the board and checked them all. I cleaned them and reattached making sure everything was snug.It doesn't appear to be a faulty connection, or ground as it is working fine, then tripping the breaker about a minute later.Could it be the air intake? If so, where do I find that? Is that part of the AC on the roof?I'm stumped, and short of buying a new circuit board that may not solve the problem, I'm running out of ideas.Can anyone help?

There is a DC 10 amp breaker? Jim

If it is the 10 amp breaker in the furnace, your motor is failing.

I guess so. It's a breaker that's shaped like a cylinder inside of a square box. It's got the number 10 on it, and it pops out shutting down the whole module. It's located at the furnace next to the on/off switch at the furnace. Here's what else I know. I turned it on, waited until the burner lit up. Ran into the trailer and turned the furnace off at the thermostat. Then waited. The blower continued to run, but the burner kicked off. 20 seconds later the breaker popped again.

It's pretty hard to know what you're talking about without a furnace age/model number but from your description it sounds electric and not gas-related.Meanwhile, here are some RV furnace basics in case it's any help: Understand an RV furnace.

That is 12V DC circuit breaker for the blower motor.As suggested..your blower motor is the problem

Atwood RV Furnace keeps tripping 10amp breaker

Pyro101981
Explorer
Apr 03, 2020
I'm having the exact same problem but I just but a brand new motor in problem still continues trips my switch I'll replace switch and get back to ya
jlbias27
Explorer
Dec 09, 2017
Thanks. Yeah probably would have been better. But I eliminated the problem for the most part. Found a bad sail switch as well. Thanks
beemerphile1
Explorer
Dec 08, 2017
jlbias27 wrote:
I have an Atwood hydro flame furnace, 8535, and my fuses just started blowing on the breaker panel inside. Thought it might be the motor so I just replaced it. Even tried a new thermostat. I bypassed the fuses by putting in a piece of wire instead of the fuse and the circuit breaker on the motor tripped and continues to trip. I took my meter and did a continuity test at the panel in the trailer and found continuity between the negative and the load side of the fuse holder. I have a dead short somewhere. Will run a continuity test via the wiring diagram in the morning. The blower kicked on the moment I jumpered it across for around 5-10 seconds. The burner wanted to kick on and will still and try but without the blower, it won’t. Suggestions??

You would be better off starting your own thread rather than posting in a four year old thread. Many people won't realize it is an old thread and respond to the original poster.
tenbear
Explorer
Dec 08, 2017
It seems the problem has been solved, but the first thing I would have done is measure the current drawn by the heater. Of course not everyone has a clamp-on ammeter but I find that is a very useful tool. If you are considering buying one, get an AC DC meter. Sears sells a good meter at a reasonable price.
jlbias27
Explorer
Dec 08, 2017
I have an Atwood hydro flame furnace, 8535, and my fuses just started blowing on the breaker panel inside. Thought it might be the motor so I just replaced it. Even tried a new thermostat. I bypassed the fuses by putting in a piece of wire instead of the fuse and the circuit breaker on the motor tripped and continues to trip. I took my meter and did a continuity test at the panel in the trailer and found continuity between the negative and the load side of the fuse holder. I have a dead short somewhere. Will run a continuity test via the wiring diagram in the morning. The blower kicked on the moment I jumpered it across for around 5-10 seconds. The burner wanted to kick on and will still and try but without the blower, it won’t. Suggestions??
Jibba
Explorer
May 19, 2013
I ran the new breaker in parallel with the old one. I figured if it was a power issue, it would trip both breakers at the same time.

The first breaker tripped, but the second one continued without any issues. So I just disconnected the old one and stuck the new one in its place. Furnace is working again.

Thanks for all the ideas!
enblethen
Nomad
May 19, 2013
Take the wires loose at the terminals on the circuit breaker. Look closely for any discoloration on the terminals. This should show if the circuit breaker is overheating, not necessarily from load but loose internal connection which causes it to trip.
Francesca_Knowl
Explorer
May 19, 2013
I presume you've already looked at or have a copy of the manual, but here's a link to it just in case.

I'm with those that suggest starting with replacing the circuit breaker - seems like if it immediately blows again you'll know you've got a bigger problem and can go from there.
Jibba
Explorer
May 19, 2013
I don't either, but if that is the problem....

The breaker is what my buddy suggested last night after describing the problem, and it is a cheaper solution that replacing the DCI or Blower (Yikes!).

I will give this a try, but am still welcome to any other suggestions.
enblethen
Nomad
May 19, 2013
The bushings warm up and then adds friction.
It is possible that the circuit breaker is going bad.
You could try replacing the circuit breaker.( I don't like throwing parts at a problem)