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ASHP low pressure help pls

canalsiderenovation
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Russdl Advanced Member

Russdl

Posted
Posted
3 hours ago, ProDave said:

usually indicate the expansion vessels(s) have failed.


How can that be possible in 5 years?
 

I guess only via dodgy installation/commisioning?

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Beelbeebub
Beelbeebub

2 possibilities   You have a leak somewhere   You may have an issue with the expansion vessel (red tank)    First check the expansion vessel   When the pressure

Nickfromwales
Nickfromwales

Where was their rationale for the 2x potable (white) vessels needing changing?? Bloody nonsense. At (only) 5 years old they should be fine!   Unusual to see two on the hot water, but I alway

ProDave
ProDave

Yes that is the tundish.  It should remain bone dry.  IF any water passes through it would pass on the inside, it is just there so you can see if anything is passing through.  You could try rolling up

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Beelbeebub Advanced Member

Beelbeebub

Posted
Posted
2 hours ago, Russdl said:


How can that be possible in 5 years?
 

I guess only via dodgy installation/commisioning?

5 years is a bit on the short side but I have had multiple ones fail, it's one of the most common things to fail in the heating systems I manage. Prob have one or two a year out of 35 or so. 

 

 

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