Heater fan resistor

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grahamwatson
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Heater fan resistor

#1 Post by grahamwatson »

Is there a more elegant alternative for the heater fan resistor?

I assume it is there to give two fan speeds, but it seems like a bit of an afterthought. At the very least, is there any reason why it cannot be hidden behind the dashboard or bulkhead?
dollyman
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Re: Heater fan resistor

#2 Post by dollyman »

they are better exposed as they get very warm :(
look what happens to zafiras :snivel:
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Galileo
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Re: Heater fan resistor

#3 Post by Galileo »

Get a PWM module, preset it to whatever second speed you want and then place instead of the resistor. Need to be able to handle the current of the blower fan, 10amp might do but best to measure the current draw, e.g. https://www.amazon.co.uk/12V-40V-Motor- ... B007TH4EN6

Edit: A 20A one https://www.amazon.co.uk/uniquegoods-Co ... ds=pwm+20a - and of course you could put the module in the car and have a speed dial for the fan if you wanted!
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grahamwatson
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Re: Heater fan resistor

#4 Post by grahamwatson »

Thank you both. I may well go for one of those PWM thingys.
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