Dometic Ac keeps blowing 12 volt fuse
I have a roof top dometic ac unit and the 12 volt 15 amp fuse keeps blowing immediately upon inserting a new one, it has the duo-therm t stat, any one have any experience with this issue? Or advice? ...
Forum Discussion
Tjpries1 wrote:
Thank you dougrainer for your help. I was able to get the ac and the furnace both working. I simply hooked it back up but left the one white/orange ,the one that must be shorting out, disconnected . Since I had two of the 12volt - wires . I checked and had 12 volt, not really sure why they have 2 of the same wires, you were right the control box was good.thanks again for walking me thru the process !
There are EXTRA wires that are NOT used coming out of the control box. You have Red Pos IN from the fuse supply. You then have a Pos output to the tstat. You found that someone had combined 2 wires and should not have and should have had a wire nut installed to prevent shorting. SOMEONE had to have combined those wires or you would have had this problem from when the unit was new. Doug
