Forum Discussion
Walkerfam7
Feb 03, 2016Explorer
Old-Biscuit wrote:
DC fuse supplies power to fan motor....fan motor has run first before anything else can happen.
Looking at a fuse does not prove that 12V DC is available....need to test that you have 12V DC to and THRU fuse (fuse could be good but have bad contacts etc.)
Click at t-stat is contacts making up......DC is then sent to a timed delay relay where DC power is then allowed to go to fan motor.
Bad Fuse, bad timed delay relay, bad motor
You didn't state which brand/model of furnace so here is a 'generic' guide (all rv furnaces basically work same/same components etc)
***Link Removed***
This is good info, thank you! So, maybe it is the fuse, but I'm not really sure how to check it right now, as I am stuck in the RV while my hubby has he car at work today. I don't have any spare fuses. Would it be bad for me to remove a fuse from another spot and just try it in the furnace spot to see if that fixes things, or would that not be wise? Please don't flame me if this is a big Nono, like I said I am new at this and electrical stuff is something I don't know a whole lot about, but I am very good at learning if I can just come across some helpful people. Please be helpful to me and not condescending...not saying that anyone has been, I just know how people can be on forums.
For whoever asked...yes the propane is on. The rear furnace is working just perfectly and he front was working as of yesterday.
He furnace is an Excalibur 8500-III series propane furnace, if that makes anything more helpful. Oh, and the previous owner installed a dinosaur furnace control board on it just a few months ago.
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