Furnace fuse
I have a 2008 27ft bumper pull Prowler trailer. When I connect the battery, the furnace 15a fuse blows, this fuse provides 12v to the wall thermostat. With no power to the thermostat I have no heat or A/C. I can replace the furnace fuse sometimes as many as 15 times ,then it will quit blowing and the thermostat works and the heat and A/C works. I've gone thru this procedure for the last 2yrs. I've replaced the wall thermostat and had it in the shop 3 times, the shop tells me there's no problem, does anybody has any ideas
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