Heater fan resistor testing

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Aziz
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Post Mon May 06, 2013 5:33 pm

Hi

Can anyone shed some light on how to test heater resistor?

Is it just continuity?

Thanks
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ranxerox
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Post Mon May 06, 2013 5:37 pm

delete
Last edited by ranxerox on Tue May 14, 2013 10:04 pm, edited 1 time in total.
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Aziz
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Post Mon May 06, 2013 6:49 pm

Thanks

I went over everything again check heater fan all ok there.
Checked fuse and it had blown possibly because of previous seized fan.

Replaced fuse all working

Thanks again

Imran :)
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Brianmoooore
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Post Mon May 06, 2013 7:26 pm

Heater resistor is a set of very low value resistors connected in series. They are wire wound resistors, so very unlikely to change value - they will either be correct or open circuit, so, as far as the average multimeter is concerned, just measure for continuity.
Note that there is a self resetting thermal cut out built into the resistor pack, and it's this part that gives the most trouble.
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