15 amp black fuse
That black fuse is for the furnace AND the on demand water heater in my unit.
I posted last week about my suburban on demand water heater's freeze protection cycle running continually during this current cold snap - as it is designed to do mind you! However the RV has been drained, gas is off and the freeze protection cycle just kept firing continually (anytime it senses 38* or lower). I called Suburban and there is a switch on the back of the unit to turn it off but I can't get to it without taking half of the stuff out of the basement and removing the bulkhead. The other option is to pull the 12 volt fuse. I have not yet labeled my fuses so I removed them one at a time until the water heater fan quit...and it was the black furnace fuse that did it.
I just did not want the thing firing the freeze protection cycle continually while it is sitting here at the house. I was thinking the thing will wear itself out prematurely.
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MikenDebbie Aggie ‘77 in the sticks near Austin TX
2019 Chevy 3500 High Country DRW
2018 Montana 3921FB
Aussie Gus + Texas Heeler Jimmy
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