108 replies to this topic

[Vic Harder]

I don't play an EE in real life and I didn't stay at the Holiday Inn last night, but I'm thinking that some of the PWM's switching high frequency is bleeding into the power supply. Maybe try a small capacitor across power & ground at the light controller?

You are the winner!  I put the capacitor across the input to the PWM (it was already exposed) and bingo.... no spurious lights going on.

 

Thanks a bunch!

Edited by Vic Harder, 02 September 2020 - 03:05 AM.

[ntsqd]

You're welcome.

 

At the PWM is probably a better location, protects everything else and not just the lights.

[pvstoy]

Thumbs up Thom....!!!

[CoreyTrevor]

Nice long distance diagnosis! 

[Monkey]

Could someone that's installed this with a fan with a direction control please show how they wired it? I just tried with a part I saw recommended on a Youtube video, but I've blown the 7.5 amp fuse three times trying to make it work (slow learner).  At first I was fooled by the black vs white is the Negative issue, and that's how I blew the fuse the first two times. The third time I had the previous issue fixed. The item they recommended was a 15 Amp version, which could be the problem, or it could be the way I've tried wiring it.

https://www.amazon.c...0?ie=UTF8&psc=1

Thanks!

[PaulT]

That unit doesn’t have direction control. You will have to take the motor outputs to a DPDT switch like something shown on this website to get direction control.

https://electroconce...ng-dpdt-switch/

The fan uses only about 3 amps so blowing 7 amp fuses implies a wiring error.

 

Good luck.
Paul

 

[Vic Harder]

I left the direction control switch that was already part of my fan in place.  Does yours not have one?

[oldhotrod]

The std #1200 fan unit does not reverse

[ski3pin]

I began to have problems - fluctuation in speed - with the speed control I installed in our fantastic fan as documented previously in this thread. I replaced it with this unit from Amazon -

 

Speed Control

 

It is much smaller and has a definitive on off click and an led light that reminds you it is on. The red light is behind the mounting panel but I can still see the glow. So far, so good. And I now have an extra unit in the camper spare parts drawer.