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Tgrisham's avatar
Tgrisham
Explorer
Jun 29, 2019

Norcold fridge and furnace fuses keep blowing.

Hooked up to Generator everything worked well for about 1 hr. Then ac and fridge stopped. Checked fuse for fridge/furnace and it was blown put another one in and it blew also. Everything else works. ...
Old-Biscuit's avatar
Old-Biscuit
Explorer III
Jun 29, 2019
It appears that fridge AND Furnace are supplied DC form SAME FUSE.....

Fridge disconnected...fuse still blows so that eliminates fridge
Thermostat disconnected...fuse still blows so that eliminates the thermstat but NOT the furnace

SO....
Need to disconnect 12VDC at furnace....should be RED wire and see if a new fuse still blows
If it does.short in DC wire to furnace
If it doesn't...short in furnace (could be relay, circuit board, switch etc)

Brand/Model of furnace??????

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