Forum Discussion

stacaz822's avatar
stacaz822
Explorer
Sep 04, 2019

Air Conditioner in toy hauler keeps drawing more amps

Anyone have any reason why a roof mounted A/C unit would draw more amps than normal? I have had it for over two years (its on the camper that I bought used, was built in 2009), and it worked great from my house when plugged into a 30amp outlet, and also worked great with my Yamaha EF3000SEB inverter generator. Lately, it has been popping the house circuit breaker, as well as just shutting off when camping on the genny. No other loads on those circuits. Thanks! I have background in EE and other engineering fields, I cleaned the filter, it blows fine, no air restriction. Maybe a start or run capacitor? It blows great cold air still (while it's on!)
  • stacaz822's avatar
    stacaz822
    Explorer
    Sep 05, 2019
    Well, I think I found the culprit, a Start/Run Cap over 10 years old.

    https://photos.google.com/album/AF1QipMco9_SO150ddEYmeSp06Yy0FVbJ1f14Y5E7vDz

    Ugh! I hate how you have to post photos here!!! Why can't you just copy and paste!!
  • stacaz822's avatar
    stacaz822
    Explorer
    Sep 07, 2019
    I replaced the (45+5) CAP for about $15. I checked the evaporator and condenser fins and all was very clean. Blowing 60 degree air now, while outside temp is 103 in PHX. Running volts inside the camper while A/C is on full blast are back up to 122 volts, where it should be! Thanks, Guys, as always!!

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,188 PostsLatest Activity: Jan 17, 2025