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Buzzing sound from pump delay timer PCB

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Buzzing sound from pump delay timer PCB Empty Buzzing sound from pump delay timer PCB

Post  KenR Tue Dec 13, 2011 2:12 am

An intermittent buzzing sound comes from the pump delay timer PCB. It only lasts about 2-3 seconds and seems to happen when nothing else is happening eg primary pump not activated.

I recently replaced the PCB in an attempt to stop the buzzing but it has made no difference. I have assumed that the replacement PCB is defective and will try a second replacement.

Is anybody aware of another possible cause?

KenR

Posts : 6
Join date : 2011-12-05

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Buzzing sound from pump delay timer PCB Empty Re: Buzzing sound from pump delay timer PCB

Post  mike Tue Dec 13, 2011 1:13 pm

Look at fig 18.
Page 23 of the BM II book.
Mike
MGC/H2O
Norfolk

mike

Posts : 1747
Join date : 2009-10-08
Age : 68
Location : Norwich

http://www.mgch20.co.uk

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Buzzing sound from pump delay timer PCB Empty Buzzing of PCB to BM2

Post  KenR Fri Dec 23, 2011 6:50 am

Mike
Thank you. Unfortunately Fig 18 does not help me much. I noticed you assistance to EW and have posted a question to him. It appears that his "buzzing" was cured by replacing the pump drice PCB. Please comment on my question to EW.
Have a good Christmas.
Regards
KenR

KenR

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Join date : 2011-12-05

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Buzzing sound from pump delay timer PCB Empty Re: Buzzing sound from pump delay timer PCB

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