A/C Capacitor Exploded

[Martind4]

Originally Posted by bddadles

Tell the son in law to double check that the connections on the capacitors are tight when he replaces them. I had a not tight enough connection once and had to tear things apart a second time. Things worked fine after that.

Thanks, I'll pass that suggestion along to him.

[OldJohnT]

Originally Posted by Dom

You are correct. For years MH a/c's used potential relays. Failures were very common as potential relays work off of pick up voltage off the run windings. For example, pick up voltage could be say 165v. When you were in a campground with say 102 volts, the relay would stay in start relay mode, as the pickup voltage would not be enough to keep capacitor out of the circuit during operation. Nowadays almost all are using solid state replays that are not voltage sensitive

WOW Thanks for that information, Im never too old to learn and appreciate your post

John T BSEE,JD Electrical Engineer

[Xmcdog]

Change all the starting electrics. I always did. It's cheap, it saves call backs and the customer is happy. It also saves explaining why the compressor has now burnt out.

A little trivia, the start windings can not be in the circuit longer than 4 seconds before burning out.

[Martind4]

It works! The new capacitor makes everything work as it should.

Thanks for all the tips.

[MarvinG]

[Xmcdog]

Well done.