LOw Prewwure in Powermax 155x boiler

[tdan]

help please - after replacing the low level water switch I am now finding the boiler is losing pressure very quickly through the outside releif pipe. This is dripping constantly.
Is it the releif valve on top of the boiler which needs turning on and off or what. Plse help -already cost me £100 !!

 

[corgiman]

Horrible things these that should have been shot at birth IMHO

but do a search on Expansion Vessels and Pressure Relief vales

 

[bobw1956]

when you refilled the system after changing the low water level switch did you make sure you turned the filling loop valve off, make sure no water is entering the system now

 

[tdan]

Hi Corgiman and Bob thanks for replies-tried to dislodge any bits in pressure relief valve by switching on and off several times. Have had some success with this in that pressure is holding up better than was but not convinced I have solved it completely yet,
What do I do with expansion vessel?

 

[corgiman]

Hi Corgiman and Bob thanks for replies-tried to dislodge any bits in pressure relief valve by switching on and off several times. Have had some success with this in that pressure is holding up better than was but not convinced I have solved it completely yet,
What do I do with expansion vessel?

with that pile of shyte you have I can only say pay potterton their fixed rate

dont touch it for the love of god those things can be a tad lethal

 

[bobw1956]

What do I do with expansion vessel?

Check the pressure is between 1 and 1.5 bar,

if its not then re-pressurise, if water leaks from the ex; vessel valve, then a new vessel is required