Caravan brake controller

Yes throw it in the bin and buy the new Redarc Pro which is a proportional controller and you will have no more trouble.

Like the Tekonsha models its a a set and forget.

The one you have only dials in a certain amount of force and applies it regardless of how you want it to work.

Re Tom's comment.........Redarc Tow-Pro

A cheaper option id the Tekonsha Primus IQ at under $80 on eBay. As long as it is a proportional unit they are fine.

HI
FIRST
The best controllers are ones which have a gimble which can proportion the brake power to the G forces that it measures .
SECOND
Punch control / first initial brake power can be adjusted to be 10% 20% 30%

Summary
A proportional controller with punch control allows great operation without lock up
NB brakes must be clean adjusted ,lubed ,basically in good order

Teknoshia Prodigy or P3

As u would expect my own machinery trailer 14x6 1600kgs brakes better than my 8x5
The control has to be adjust at around 200kgs lighter or heavier trailer weight
Trailer brakes, city use last approx. 50,000km

swampfox

Reads like a faulty proportion control to me. Have you put a meter across the magnets and checked that the voltage proportionally increases across the range? Could also be a sticky levering system in the brakes themselves.

I have used a remote head unit for a couple of years now and the Panic button has saved us a couple of times when things get out of shape behind. Beware the Set-n-Forget attitude; identified as a factor in analysis of several crashes investigated by the Canadian Mounties, a few years ago.

Iza