Greetings,
We are having an intermittent problem with our furnace on our 3055 Big Horn. After having a mobile tech come out to troubleshoot it when it was completely dead the tech replaced the thermostat and everything seemed good. Fast forward a few weeks and we were packing things for the winter trip. I left the furnace on and set it to about 50 overnight. Next morning I went out and checked it and it was 25 degrees inside.
I called the mobile tech and he came out and looked at it again. Sometimes it would work OK and other times it would fire up 3 times and then need to have the thermostat turned off and back on to reset the furnace. When it starts it usually has a fairly loud howl until it starts and keeps going. The tech pulled the furnace (a suburban 35k btu unit) and took it back to his shop to bench test it. He said it worked fine on the bench and he couldn't find anything wrong with it.
He re-installed the furnace and I told him I would leave it on overnight as we were planning on leaving the next morning. When I checked it then next morning the trailer was 30 degrees inside so I called the tech again. He came over and called suburban tech support and they had no idea what was wrong either.
It lights every time and I can feel heat coming out of the exhaust but if it howls it won't stay lit. If it lights and howls and the howl goes away it will stay running until the thermostat tells it to turn off. In the week and a half that we have been gone it has only failed to stay running one time but it is annoying to not have it work properly.
It does the same thing as a residential furnace does when the flame sensor gets dirty but the tech told me everything looks good. In fact the furnace looked like it had never been run at all. It is a 2010 Big Horn.
Does anybody have any ideas what could be going on with this furnace?
Thanks,
Brian
We are having an intermittent problem with our furnace on our 3055 Big Horn. After having a mobile tech come out to troubleshoot it when it was completely dead the tech replaced the thermostat and everything seemed good. Fast forward a few weeks and we were packing things for the winter trip. I left the furnace on and set it to about 50 overnight. Next morning I went out and checked it and it was 25 degrees inside.
I called the mobile tech and he came out and looked at it again. Sometimes it would work OK and other times it would fire up 3 times and then need to have the thermostat turned off and back on to reset the furnace. When it starts it usually has a fairly loud howl until it starts and keeps going. The tech pulled the furnace (a suburban 35k btu unit) and took it back to his shop to bench test it. He said it worked fine on the bench and he couldn't find anything wrong with it.
He re-installed the furnace and I told him I would leave it on overnight as we were planning on leaving the next morning. When I checked it then next morning the trailer was 30 degrees inside so I called the tech again. He came over and called suburban tech support and they had no idea what was wrong either.
It lights every time and I can feel heat coming out of the exhaust but if it howls it won't stay lit. If it lights and howls and the howl goes away it will stay running until the thermostat tells it to turn off. In the week and a half that we have been gone it has only failed to stay running one time but it is annoying to not have it work properly.
It does the same thing as a residential furnace does when the flame sensor gets dirty but the tech told me everything looks good. In fact the furnace looked like it had never been run at all. It is a 2010 Big Horn.
Does anybody have any ideas what could be going on with this furnace?
Thanks,
Brian