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Discuss fan pressure at venturi in the Plumbing Jobs | The Job-board area at Plumbers Forums

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Deleted member 32524

Plumbers Arms member
Plumber
Gas Engineer
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725
Hello,

Went to Vokera 25he. Pump starts, fan runs, no ignition. Cleaned Ventures still no ignition. Put FGA on venturi. Reading looks low.

Anyone got an idea of what it should be?

Thinking lazy fan.

Thank you.

Duncan.

Ment to add tubes clear and no splits.
 
Replace Venturi first! U may imagine its clean but some times it's not quite right. Take plus tube off aps and blow down it, if you get ignition it's the Venturi, if it makes no difference short the terminals on aps (careful it's 240v) during ignition with a bit of flex!
 
think the normal pressure will only be around 2mb, thought blowing down tube could damage aps?
 
2mb. the readings were lower than that. I have cleaned loads out with wire wool and always worked, but you know what it is like. Also hugely cheaper than a new fan. Been quoted £106 + vat for one.

What are others paying?
 
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