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Subject Topic: Thetford cistern Post Reply Post New Topic
PersonHoward6040
via mobile 05/4/2024 at 7:27am
 Location: Midlands
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I have a back siphoning issue! When I fill the cistern more than half full , overnight (when not in use) it fills the bowl almost to overflow level. Afterwords it works normally. My current solution is to only half fill but this means regular top up. Advise appreciated?

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H6040


Personbirdman101
via mobile 05/4/2024 at 8:19am
 Location: Milton Keynes
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https://www.asap-supplies.com/products/thetford-vacuum-breaker-c200-c250-c260-c400........You have a vacuum breaker valve to prevent siphoning,this is either stuck or needs replacing,usually the latter.

Post last edited on 05/04/2024 08:24:56

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2023 Swift Archway Woodford, MK3 Kuga ST Line X 190 ps AWD Auto
Now 52 years Caravanning completed.


PersonHoward6040
via mobile 05/4/2024 at 8:36am
 Location: Midlands
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Thanks for advise and how do I access this breaker valve? Some years ago I replaced the printed circuit (after 3 failures) with a Halfords 12v push button to activate the pump. Do I need to get to the pipework from the top of the cistern?

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H6040


Personbirdman101
via mobile 05/4/2024 at 8:40am
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Through top of tank under circuit board

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2023 Swift Archway Woodford, MK3 Kuga ST Line X 190 ps AWD Auto
Now 52 years Caravanning completed.


PersonHoward6040
via mobile 05/4/2024 at 9:05am
 Location: Midlands
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Thanks will pursue

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H6040



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