Thetford Fridge 630543 Cooling Kit (1 Viewer)

[Brian Thompson]

Has anyone fitted a Thetford Fridge cooling Fan Kit (630543) i fitted one i can't get it to run .I've had a hair dryer on the thermal sensor until it was proper hot . Any idea what temperature they are supposed to cut in at please .

 

[Two on Tour]

Don't know about the Thetford kit, but I have my home brew fridge fans come on at 43c.
Are you sure that you have a picked up a working 12 volt positive and a negative to ground?

 

[Stealaway]

Where do you fit the thermal sensor?

 

[tonka]

I made a DIY one from computer fans and an adjustable thermal switch.
Just seen the instructions for the Thetford and note that it says connect red to red and black to black.. That's fine if your van uses that wiring BUT on my Burstner it is totally different. So i would make sure you have the correct wires for the 12v connection

 

[Two on Tour]

Where do you fit the thermal sensor?

Who is your question directed at ? the OP or me ?

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[Stealaway]

Who is your question directed at ? the OP or me ?

Sorry - The OP

 

[Brian Thompson]

Don't know about the Thetford kit, but I have my home brew fridge fans come on at 43c.
Are you sure that you have a picked up a working 12 volt positive and a negative to ground?

Yes iv'e tested for live feed and negative .

 

[Brian Thompson]

Where do you fit the thermal sensor?

On the pipe as indicated in the instructions . I took the sensor of and applied heat with a hair dryer , i couldn't get the fan to cut in

 

[Brian Thompson]

I made a DIY one from computer fans and an adjustable thermal switch.
Just seen the instructions for the Thetford and note that it says connect red to red and black to black.. That's fine if your van uses that wiring BUT on my Burstner it is totally different. So i would make sure you have the correct wires for the 12v connection

Ok fair comment i'll check that out Thanks

 

[Brian Thompson]

I made a DIY one from computer fans and an adjustable thermal switch.
Just seen the instructions for the Thetford and note that it says connect red to red and black to black.. That's fine if your van uses that wiring BUT on my Burstner it is totally different. So i would make sure you have the correct wires for the 12v connection

Just a thought but as the thermal sensor is effectively just a switch if I take the connectors of it and touch them together it should complete the circuit and the fan should cut in . am I right do you think

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[tonka]

Not familiar with your kit and its been a while since i did mine but yes in theory it is just a switch.
However before doing anything i would ensure you have a PERMENANT LIVE 12v feed, test with a meter

Mine has an adjustable temperate control, just a few pounds off ebay.. I can change it to suit..

 

[Brian Thompson]

Not familiar with your kit and its been a while since i did mine but yes in theory it is just a switch.
However before doing anything i would ensure you have a PERMENANT LIVE 12v feed, test with a meter

Mine has an adjustable temperate control, just a few pounds off ebay.. I can change it to suit..



View attachment 866537

I have checked the feed and its all good I'll have a look at fitting a temperature controller , seems like a better system . thanks for your help , much appreciated

 

[StillGoing]

Just a thought but as the thermal sensor is effectively just a switch if I take the connectors of it and touch them together it should complete the circuit and the fan should cut in . am I right do you think

Yes.

 

[Landy Andy]

I have checked the feed and its all good I'll have a look at fitting a temperature controller , seems like a better system . thanks for your help , much appreciated

Are you sure the positive is the positive, and neg is neg. Not just 12v. Moho wire colours can be very odd.

 

[Stealaway]

On the pipe as indicated in the instructions . I took the sensor of and applied heat with a hair dryer , i couldn't get the fan to cut in

I have mine pushed into the fins at the right hand end of the heat exchanger and they do get bloody hot

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[Brian Thompson]

I have mine pushed into the fins at the right hand end of the heat exchanger and they do get bloody hot

Ok i'll try that . thanks

 

[Diabalo]

Brian Thompson The thermo switch/sensor should be open circuit when cold and closed circuit when hot so just bridging it to test the fan should be ok.