However you can test for a bad fuse to verify that is the problem.
Rv 12 volt fuse panel.
The 12 volt output of your converter likely goes through two 30 amp fuses that feed your 12 volt fuse panel.
The biggest issue with older rv distribution panel models is that the converter is noisier which can be very distracting when running.
The 12 volt dc power goes to the lights switches and slides and to the controls of many appliances including the heater air conditioner and refrigerator.
Test both sides of the fuse for 12 volt power.
Determine which fuse is for the appliance circuit fuses are normally labeled and find a suitable ground for the 12 volt test light.
The first thing you need to do is identify what components operate on 120 volt power and what draws from the 12 volt dc system.
Customer service techs december 8th 2015.
Fuses are not like breakers meaning once they blow they have to be replaced.
Place a 12 volt meter at the bare metal section on the top of the fuse.
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If there is 12 volt power to the interior of the rv you need to check the fuse for the appliance in the power distribution center.
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The fuses in older models protect 12 volt battery powered systems which power lights roof vents water pump and several of the appliance on the lp mode of operation inside the coach of the rv.
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