Breaker panel need answer

[Donedroolin]

So we are spending the weekend in our camper in our buddy's driveway. Camper is hooked to shore power 15 or 20 amp breaker. We are only using minimal interior lights and propane heater set at low. Could someone please tell me why my breaker panel is squealing. The cooler fan in front is not on. But my breaker panel is squealing. Is this dangerous will it be ok. I will have it checked soon since I have purchased the extended warranty. But is it safe never heard it make noise before and there is only one fan right. Thank you

[Seann45]

first flip all the breakers off then back on again.. see if that helps
Do you have an EMS? Your buddys plug could be wired backwards.. a good EMS would protect you from damage caused by that
*Electrical Management Systems (EMS) protect your RV against voltage fluctuations, power surges and incorrectly wired pedestals which can damage RV appliances and electronics. - See more at: EMS-PT30X 30 Amp EMS with Surge Protection - Progressive EMS-PT30X - Surge Protectors - Camping World

[LiftedAWDAstro]

It probably is not an issue. It is the electronics built in. My daughters old 2010 22FB did it but I could not hear it. It drove her nuts! She would leave a light or 2 on all the time and it would put enough load on the system and eliminate the noise. Try turning on a few lights to put some load on it.

[Donedroolin]

So yes I do have a surge protector. That checks the voltage also don't have it. Did flip breakers on and off did not help. Turning on TV and lights seems to work. I will have to have it checked

[Daxton]

Mine is a 2010 BHS G2. We have the same noise. I warrantied the first panel, and the replacement does it as well. We usually find that it's doing it with no load on it. Sometimes its louder than other times. What we do now, is just leave a small night light plugged in right by the stove in the kitchen area which creates a minimal load, and the noise disappears. Must be in the electronics or the coils etc.

[Donedroolin]

Thank You!!!!!!!!!!!!!