Lenny HB
LIFE MEMBER
- Oct 18, 2007
- 53,829
- 151,630
- Funster No
- 658
- MH
- Hymer B678 DL
- Exp
- Since 2008 & many years tugging
Those are pretty useless they have a 15 deg hysteresis, so effectively the fan will run all the time as they will never get cool enough to turn the fan off might as well just have a manual switch.OK, tempting fate here. Why is there a need for an expensive fan controller for fans mounted behind the top fridge vent? I bought 2 Arctic computer fans - which are indeed almost silent - and connected them to an existing permanently live feed to the fridge. They are connected with a 0.5amp inline fuse, the feed then going through a cheap temperature switch, a 35 degree normally open type, mounted up high behind the fridge.
You have no control to manually turn it off and on, but why does that matter? If the fridge is running you want the fans to be ready to come on anyway, they'll come on when it gets to 35 degrees above the back of the fridge, inside the vent.
If the fridge isn't running and the side of the van gets hot enough in the sun to turn the fans on, who cares? They use next to no power and my solar panel will easily cover the consumption in that heat. Living in the UK the chances of my van reaching 35 degrees are remote anyway! I've had it like this for a year now and it seems to work well.
Am I missing a downside? Just seems a simple, easy and cheap way to add fans and wire them in. You could use a different switch if you wanted a different temperature, they are after all only a couple of quid.
Also they are the same price as the cheaper PCB controller.
Last edited: