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Ecomax vaillant 824/2e....Low pressure?

Joined
31 May 2010
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Hello all, please help!!

My dad is having problems with his combi boiler(ecomax vaillant combi 824/2e).

I will explain best i can what happens.....The boiler keeps turning itself off, so no pressure. Dad then opens up 2 taps to lift pressure, when it reaches 3/4 of way up(just under the 2 bar mark) he shuts them. Then presses a button for boiler to kick in.

He will get hot water for a couple of days then same again happens....pressure falls over the couple of days, boiler off and dad has to open up taps and go through above info all over again.
This is happening every couple of days.

What is the fault, please help?
Thx in advance.
 
Something is leaking, rad valve, PRV on boiler or pipework.

The EXV may be failing and causing water to be ejected from the PRV.

Tony
 
Thank you Tony for your speedy response.
I will pass on this info to my dad.
I may be back!!
Thanks again.
 

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