Fridge Ventilation Fans

bognormike · Moderator

I had this problem a while ago (3 years ago!)

http://www.motorhomefacts.com/ftopic-6666-0-days0-orderasc- hot.html

I had an exchange of PMs and one of the kind members (can't remember who Rolling Eyes

) sent me a computer fan, which I fitted inside the top vent with a separate switch. I now put it on when the fridge struggles to cope - no problems since Smile

Chausson

Hi

I have just purchased one of those thermometer kits that's talked of, I have assembled the kit but for the life of me I cant figure out how to use it, can someone please point me in the right direction to stop me going mad wondering how to wire the thing up.

Ron Rolling Eyes

pippin

Right Ron - pay attention!

I made my kit up this afternoon, have bench tested it but have not yet fitted it into the vents.

Make a short wire link and join the +12V terminal to the COM terminal.

Connect the +12V input wire to that same +12V terminal.

Connect the -12V (it isn't - it is zero volts really) input wire to the -12V terminal.

Connect the black lead to the fan to that same -12V terminal.

Connect the red lead to the fan to the NC terminal.

Turning the temperature control knob back and forth should make the fan stop and start.

Experiment with the knob setting when the fridge is on to get a feel of how hot you want it to get before the fan switches on.

E&OE

Chausson

Hi Pippin

Thanks for the info, I would never have got there without the help, you izzz top man.

Regards Ron

Autoquest

Thanks Zebedee

mark_2cv

I have one of these fitted above the fridge freezer, and just behind the Smev oven and it works well, if a little noisy.
I am thinking of changing the single fan for two "silent" models with a further mod which I would welcome opinions on -

The oven has a frame all around the front which is entirely grille. A lot of heat (unwanted) comes out of this.
Has anyone blocked this off and relied on loosing the waste heat out of the exterior vent by fan or deflection?

Mark.

pippin

I made a fan unit for the roof window over our bed area.

I used two 120mm computer fans.

By use of a DPCO switch I can operate them at full speed or at half speed by putting them in series.

They blast out (well in actually) quite a lot of air at full speed but are noisy.
That is the setting we use during the day when we are not in the van.

On the half speed setting they are virtually silent and give just enough breeze for night-time use.

I tried a 60mm fan for the fridge unit but it is really noisy.

I am going to get two 80mm fans and wire them in series.
That way they will run nice and quietly.
The other advantage is that two fans (or even two pairs) will cover the vent area more effectively.
Remember also that two fans in series take half the current of just one fan.

Watch this space!