Vibration in ac------------
I also had vibration in my AC. It was extremely loud in the back of the fifth wheel. Upon investigating, I found the rear of the metal case was just touching the roof. Apparently the four large bolts that hold the unit to the dough nut on the roof had been tightened too much, especially the two rear bolts. I purchased a 1/4" thick foam door mat from Lowe's, cut 8" from one end of the mat, raised the rear of the AC unit just enough to insert the foam
rubber mat under the case between the roof and case. Let unit set back down on to foam mat. Presto, vibration gone!
The vibration is being generated where the case just touches the roof at the rear of the AC. You do not even have to remove the plastic cover to see
the problem. I first tried a rubber computer mouse pad by folding in half, inserting it under the case on one side. When the pad removed the noise
I then purchase a "DUCK DYNASTY" kitchen or door foam mat. It is about 1/4"
thick, cost about $4.99 on sale at Lowe's. Fixed my problem. The AC has never been so quite.
Sid, Lois & HRH MISSY Terrible 2s SHIH TZU
2011 ROCKWOOD 8285 WS
2014 F-250 KING RANCH PS/SD/6R140/BFT
BOLIY PRO 3600SI GEN
DAYS CAMPED 2016 57 DAYS