Cooker hood fan stopped working?

HappyHippyDad · Jan 3, 2018

Hello all.

My cooker hood fan has stopped working and its not something I attempt to fix with customers but I thought Id have a look at my own.

The lights work. It has 240v into the terminal block. 240v from switches back to the terminal block. Then the 3 lives (3 varying speeds) disappear into the motor, 2 others come back from the motor and go into a capacitor. So Im guessing the problem is with the motor or capacitor. Which us most likely? How do I test these?

Cheers.

[ElectriciansForums.net] Cooker hood fan stopped working?

buzzlightyear · Jan 3, 2018

who's make of extractor is it .How to measure capacitance with a digital multimeter - http://en-us.fluke.com/training/training-library/test-tools/digital-multimeters/how-to-measure-capacitance-with-a-digital-multimeter.html

charlie76 · Jan 3, 2018

happyhippydad said:
Hello all.

My cooker hood fan has stopped working and its not something I attempt to fix with customers but I thought Id have a look at my own.

The lights work. It has 240v into the terminal block. 240v from switches back to the terminal block. Then the 3 lives (3 varying speeds) disappear into the motor, 2 others come back from the motor and go into a capacitor. So Im guessing the problem is with the motor or capacitor. Which us most likely? How do I test these?

Cheers.

View attachment 40079

Ha ha - Probably not the best answer but it worked. I got called out to a customer with a fan not working but lamps etc were. I used a small screwdriver to give the fins of the fan a nudge and tried again and it spun and they never had a problem again.

If its a crap motor, its likely that grease will get in and cause issues, sticking etc. It may only come to light if the fan has not been run for a period of time and the gloop has set hard causing the fan to stick.

Anyway, as I said, not a technical answer but sometimes, the hammer is the best tool in your toolbox

Wilko · Jan 3, 2018

I'm with Charlie on this, I've fixed a couple that've been gummed up.

charlie76 · Jan 3, 2018

Wilko said:
I'm with Charlie on this, I've fixed a couple that've been gummed up.

Did you fix them or prod them?

Wilko · Jan 3, 2018

They were working when I left, that's all I'll say

.
Had one where one of the internal conductors had popped out of the terminal, had to use a screwdriver and all.

benji · Jan 3, 2018

open the selector switch and look at pcb for burnt tracks

Squid · Jan 3, 2018

Quote for a full house rewire........ and tut a lot.

Spoon · Jan 3, 2018

SWD said:
Quote for a full house rewire........ and tut a lot.

Does everyone work for British Gas.....

ruston · Jan 3, 2018

Grease is the the first suspect, same with kitchen wall extractors .

telectrix · Jan 3, 2018

ruston said:
Grease is the the first suspect, same with kitchen wall extractors .

how do you extract a wall?

ruston · Jan 3, 2018

telectrix said:
how do you extract a wall?

No bother when I worked with these.

Gary K · Jan 3, 2018

how do you extract a wall?

Easy as A,B,SEA

ipf · Jan 3, 2018

ruston said:
View attachment 40089

No bother when I worked with these.

And I would say a bit of grease never did one of those any harm.....

ruston · Jan 3, 2018

@ipf ,No and nicer to work with than blackjack.
If they lacked grease the squealed like a herd of pigs .

Cooker hood fan stopped working?

HappyHippyDad

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buzzlightyear

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charlie76

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Wilko

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charlie76

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Wilko

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benji

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Squid

Spoon

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ruston

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telectrix

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ruston

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Gary K

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ipf

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ruston

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