worcester heatslave 20/25 keeps losing pressure

[neildumbleton]

Hi, I'm new to this website but am hoping someone can help me please......My oil worcester heatslave 20/25 keeps losing pressure, it drops to 0.2 bar over the day and I am continually having to turn the tap to increase the pressure to make the hot water/heating work. Its not coming out of the pressure release valve which I have replaced and there are no apparent leaks in radiators. Any ideas please. Thank you in advance

 

[SimonG]

Why did you replace the prv?

 

[Unregistered]

Because water was coming out of the vent pipe and it kept losing pressure

 

[ShaunCorbs]

Because water was coming out of the vent pipe and it kept losing pressure

any leaks internally or expansion vessel other than that get a gas safe /oftec engineer to have a look

 

[SimonG]

Did you fix the reason why water was coming out the prv.

Who services the boiler? Give them a call.

 

[Dotty]

Thart was the symptom, not the cause.

 

[Whyme]

Get a geezer with a cheese triangle on his t shirt too have a look.

 

[rjvermeulen1972]

Could be a faulty plate heat exchanger suppling your hot water. Top up the system again, isolate cold supply to boiler and run hot water taps. Monitor pressure gauge. if the pressure drops repeat exercise but don't run hot taps. If your pressure doesn't drop you know the heart exchanger needs replaced.

 

[SimonG]

Could be a faulty plate heat exchanger suppling your hot water. Top up the system again, isolate cold supply to boiler and run hot water taps. Monitor pressure gauge. if the pressure drops repeat exercise but don't run hot taps. If your pressure doesn't drop you know the heart exchanger needs replaced.

Would do the opposite. Pressure would increase.

 

[rjvermeulen1972]

Logically Yes, experience has proven otherwise.

 

[SimonG]

Only if low incoming mains pressure. In which case a combi is no good anyway.

 

[lame plumber]

2 posts and he is arguing with one of the best!!!!!!!!!!!

 

[Unregistered]

Can't rule anything out based on minimal information. Doesn't hurt to think outside the box!

 

[SimonG]

Back to the op. Does it steam out the flue when running?

 

[lame plumber]

Can't rule anything out based on minimal information. Doesn't hurt to think outside the box!

Best to rule out the logical fault finding bits first though.

 

[rjvermeulen1972]

Best to rule out the logical fault finding bits first though.

L a me is right... How about some constructive input [emoji40]