Originally Posted by divie20
I recently made a post about my dometic refrigerator model rm2812 there was a humming noise when I turned on the breaker for the unit I have since found out that it was my converter/charger that was making the humming sound it functions great until the refer breaker is clicked. after pulling out to get a model number I realized it is a 50amp converter charger is this common in a motor home that is marked as 30amp power I'm thinking someone might have changed the unit prior to me getting it
any info would be helpful. also is there any reason why it might hum only on the refrigerator. thank you
A 50 amp converter is pretty normal.
The 50 amp rating is 12 volt output, used to charge your batteries and power the lights, water pump and other items.
It is not the 120 volt AC input. It probably will use 6 to 8 amps AC.
When you flip on the refrigerator breaker, is it a 120 volt breaker ?
I'm wondering if you have a 3 way fridge and are turning on the 12 volt funtion. That would add a load on the converter and possibly make it humm.