I am hearing a humming noise in the compartment that stores my 50 amp cable and it's reel. I unplugged from shore power and the noise is still there. You can hear it from inside the bedroom. My coach is a 2004 Dutch Star. Any ideas what this is ? Normal ? Thanks.
Jim & Carmel
2016 Escape 17b 2017 Jeep Cherokee Trailhawk With Factory Tow Package
If you have a generator then I'm sure its the transfer switch (gen/shore switch) making a humming noise. Pretty common for some transfer switch models. Sometimes you can take the contact points apart and clean them up to see if that helps (power off obviously) or look for a better model less likely to hum.
I had a Dutch Star for a few years, I had similar, It was the Power Converter/charger - that rig has a seperate Inverter/Batt Charger. The Charger was in a compartment under the bedroom slide. The fan was going and making a noise - I replaced the charger.
Fan on converter trying to cool it down, Fan is a 12 volt device.
Crickets
Home was where I park it. but alas the. 2005 Damon Intruder 377 Alas declared a total loss after a semi "nicked" it. Still have the radios Kenwood TS-2000, ICOM ID-5100, ID-51A+2, ID-880 REF030C most times
Battery disconnect Switch? Neighbors Jayco has a relay disconnect switch.Needs power to hold it closed. Quite (no power) when off.Should have been a latching relay so power is only needed to make the switch. Don"t know if that is what you are hearing though
Possible the Converter Fan is running which will run even after 120 disconnected until the converter cools down. If you have an Inverter/Charger, you will not have a Converter. The standard Converter is in the shore cord Compartment on a Newmar. The optional Inverter is on the Passenger side. On your Newmar in that compartment you have The Transfer box The Converter/s if you have them, your model may have 2 converters The Power Cord reel The BIRD control relay(this will not make any noise) The Emergency Start solenoid The Battery disconnect Solenoid Doug