Community Forums

TMarble · 12-10-2022, 11:21 AM

Wen to plug into 50amp and no power to coach. Tried 30amp, no power. Checked all breakers could hear clicking like was connecting, but no power, then after a few minutes, the power just came on. Finished camping, went home and plugged in to 50 amp and same thing, no power and after a few minutes it just came on. Can't find out why. Help?

**Lt Dan** · 12-10-2022, 01:11 PM

First off, Welcome to iRV2!

It sounds like your Automatic Transfer Switch (ATS) has gone bad and is either not making solid contact due to weak coils or burned contacts.

wolfe10 · 12-10-2022, 01:14 PM

Yup, check for power on the IN and OUT side of the ATS (assuming you are safe working around 240 VAC).

If not correct on the IN side, check for shore power cord or inlet or if power reel, check it CAREFULLY.

If power is correct coming in, but not out, ATS is the bad actor.

SuperGewl · 12-10-2022, 01:25 PM

First with this sort of issue you need to stop plugging it in to shore power. The ATS is faulty, and it could start a fire. If you don't feel confident enough to troubleshoot and repair, it then get to someone that can.
Most likely the ATS will need replacing along with the Shore power cable. While you are at it if you don't have one I would also add a Surge protector, either one built into the ATS or a separate one just before the surge protector. It's also very important to check the wires leading out of the ATS, they may be burnt also.
Trust me been there done that. 2 different MH's

twinboat · 12-10-2022, 02:39 PM

If you have a cord reel, that could be failing otherwise I'd be looking for burnt connections at the transfer switch.

House Husband · 12-10-2022, 04:45 PM

With the timing of the power, I suspect you have a surge guard going bad.
I don't see where the automatic transfer switch would be giving you a time out. It is in the normally closed position until the generator starts.
The ATS only times out with generator use.

Richard

Martind4 · 12-10-2022, 06:48 PM

Is it really a few minutes or just not instantaneous?

Our rig takes 30 seconds or so after being plugged in for the Progressive Industries EMS to insure the incoming power is good before passing it on to the coach.

If that's the case, your system could be working as designed.