If it is a Dometic AC unit the control box can be accessed from below. You should be able to check that by removing the cover over the AC inside the RV. Not sure about other brands. There is a 12v lead that is required for the AC thermostat/controls on most types of units.I have not yet, do I need to get on the roof to check that?
Maybe depends on make of AC unit. But on our rig, I can get to the junction box from the inside of the RV.I have not yet, do I need to get on the roof to check that?
So got the m26 back Thursday. I went to use the jack and had no power, the service advisor said “oh the probably left the battery on” they plugged it into shore power and I checked everything. Everything seems to work fine. Got home plugged it in to 110v and was happy. Had it plugged in for two days, I unplugged from 110v to move the camper back to my storage lot. Went to use the power jack dead. I have no 12v power at all? I replaced the 50amp fuse thinking it was bad, nope no dice. Checked all the fuses on the panel all are good. I’m at a loss for words. When I originally dropped it off the camper,the jack, stabilizers 80% of it worked. Don’t know what else to check. Battery was tested is good?CW called this morning. All is fixed. Looks like they found a short in the lines behind the fuse panel. I’m scheduled to pick it up Thursday at 9am. I will be testing everything before I take it home.
It sounds like you are getting close to finding the problem. If I were you, I would get out my voltmeter, sharpen one of the probe tips to enable you to prick through wire insulation, and start wire testing from battery to jack. I hope it is just a fuse, but wires have been known to pull apart inside the wire insulation and look normal on the outside due to mechanical stress - Jacking???i know the powerjack works I hooked it up directly to the battery and works as it should. I check the 30amp fuse and 50amp fuse both were good. Is there any other fuses I need to check?
I’m out of ideas back to camping world I go.It sounds like you are getting close to finding the problem. If I were you, I would get out my voltmeter, sharpen one of the probe tips to enable you to prick through wire insulation, and start wire testing from battery to jack. I hope it is just a fuse, but wires have been known to pull apart inside the wire insulation and look normal on the outside due to mechanical stress - Jacking???