I'm having a vibration problem while stationary with no coach engine or generator running, and no shore power on that must be similar to the vibration some Forum members are having with their inverters and Keurig Coffee machines. I have a 2000, U-320 with a Pro Sine. I first encountered the problem about 9 day ago enroute to the FMCA rally at Perry. I plugged into shore power at an RV park, coach engine off, generator off, and when the shore power kicked in, I turned the battery charger on, but not the inverter. After a period of time I felt this vibration that I had not been aware of. I check around the coach and could feel it in the ground, and it was somewhat similar to the vibration the generator makes just after a cold weather start. I turned off the charger, then the shore power and then the DC switch by the entrance stairs, but the vibration would not stop (inverter switch was not on, and refrigerator was off). I finally gave up, tuned shore and DC power, refrigerator and charger back on. I finally got to sleep and when I woke up the next morning, the vibration had stopped. For the past 7 days I've been running on generator or batteries, starting the gen several times during the day and the coach engine every other day, and using the inverter when I needed to, but no more vibration. Started home today, pulled into an RV park tonight, shut down the coach and generator, plugged into shore power, turned on battery charger and refrigerator after the shore power came up, and went to dinner. When I returned, I noticed the vibration was back. Again, I turned off shore power, DC power at the stair switch, unplugged coffee machine and portable oven and turned off the frig. Vibration is still there, although somewhat less intense. Any suggestions?
Is it your aux compressor running (to help maintain level)?
Satellite dish searching?
I think you need to start over and tell us what is vibrating,the coffee maker,the inverter, the whole coach or what.Do you hear a
vibration or feel one?Open all your basement doors and try and pinpoint the "vibration".The only things that can be vibrating
are things that move.
I would go with Michelle's Aux air compressor as the source. Go open your bay door and listen if you feel it.
Do you feel it in the ground outside? Could it be from an outside source?
If the OP was parked anywhere in Texas, he might be experiencing the
mini-quakes believed to be caused by FRACKING. No, I'm not joking...
Might also check if the cooling fan in the inverter compartment is running, ours is mounted to the ceiling of that compartment and sometimes when it runs we get a vibration