Forum Discussion

hiii98's avatar
hiii98
Explorer
Jul 01, 2019

power convert how to diagnose.

I bought a camper and i noticed the fan on the power converter never turns on. put a tester on everything internally all the fuses internal and external...all good. However i noticed when i test the voltage on the negative cable it shows 12v, same with the positive cable. Any idea whats up? I remove a cable from battery (there are literally about 14 cables..this is on a semi)...and both sides show 0, put the cable back on...12v on both neg and positive again. Any advice? I assume the cables are bad and the unit is good?
  • hiii98's avatar
    hiii98
    Explorer
    Jul 01, 2019
    jkwilson wrote:
    Measures 12V with the negative lead connected where? The main reading to be concerned with is from the negative to positive lead. If the negative lead is 12V above something, then the positive lead will be 24V above that point.


    if i put the black multimeter terminal to a metal ground and the other red on my negative cable i get 12v. i dont think i should be getting any volt on neg, only on the positive side i assume. Both pos and neg cable show 12v, also fan never spins on the converter.
  • jkwilson's avatar
    jkwilson
    Explorer III
    Jul 01, 2019
    Measures 12V with the negative lead connected where? The main reading to be concerned with is from the negative to positive lead. If the negative lead is 12V above something, then the positive lead will be 24V above that point.
  • hiii98's avatar
    hiii98
    Explorer
    Jul 01, 2019
    it actually should show 12v...had to wiggle the tester.

    wont let me post the link! I guess copy and paste in browser if you want to see a pic, or just read my problem. No clue why i cant post pics or even a link...grrr

    https://ibb.co/K91pMW2

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,203 PostsLatest Activity: Feb 22, 2025