My inverter is controlled by a Heart Interface 2000 controller. When I disconnect shore power and want to invert AC power, there is an "Invert" button on the contoller that I can press and AC power will feed to the boat's wall plugs. I tested this out for the first time last night and discovered I did indeed gain AC power to the plugs as expected, however my fridge compressor suddenly started making a humming/buzzing sound the second I switched on the plugs. I tried disconnecting power to the fridge but it continued to buzz until the wall plugs were switched off again. This leads me to think it may have to do with grounding? (fridge and wall plugs should or shouldn't share a common ground?) My fridge runs normally when the "invert" button is switched off or on as long as the wall plugs are not activated. I want to use the inverter but I don't want to kill my fridge compressor - Is this buzzing normal? any help?
Dan Breakaweigh I C&C44 Halifax, NS
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