Boiler constantly losing water

[falkster]

We've got a brand new worcester bosch boiler but the previous owner either didnt register it or have the invoice so cant ring anyone up for warranty work.

Anyway, one of the pipes going out of the wall has a constant flow of water and Im topping it up every other day. It has only needed this doing for the last few weeks but I also noticed water on my car in the garage (where the boiler is) from a red valve that might have also leaked.

I know nothing about heating so need advice before I ring someone that will reem me.

[Ferg]

If the 15mm pipe from the safety relief to the outside is 'running' when the gauge is showing less than 3bar then it's fked. Replace valve, and it's sorted.
However, it may be a sign that the pressure vessel is either empty of pre-charge or actually knackered. If it isn't operating correctly then any expansion in the system (naturally occurring due to heating) will open the relief valve and continual topping up will gradually wear the seat out.
Continual topping up will also promote rusting in the system..

[A.C.E]

if its brand new, then it will have a 5 year warranty from worcester irrispective if its been reg'd or not. (guess how i know?)
phone them up and give them the model number, they'll sort it.

[andySC]

As stated contact WB armed with the boiler serial number. Hidden within this is the build date of the boiler.

If it's a Greenstar Junior, SI or Cdi the pressure relief valve is a tricky job to replace as the entire "hydraulic block" needs to be removed to gain access it. This consists of the majority of the water carrying parts of the boiler & is best left to someone with WB experience to tackle. I'm changing one tomorrow for a customer & can't wait...not!

I've seen a few Juniors & Si's where the flexible hose for the expansion vessel hasn't been connected. That said, even if that were the case here the PRV would still need changing.

Edited by andySC on Thursday 9th February 23:56

[vanman]

andySC said:

As stated contact WB armed with the boiler serial number. Hidden within this is the build date of the boiler.

If it's a Greenstar Junior, SI or Cdi the pressure relief valve is a tricky job to replace as the entire "hydraulic block" needs to be removed to gain access it. This consists of the majority of the water carrying parts of the boiler & is best left to someone with WB experience to tackle. I'm changing one tomorrow for a customer & can't wait...not!

I've seen a few Juniors & Si's where the flexible hose for the expansion vessel hasn't been connected. That said, even if that were the case here the PRV would still need changing.

Edited by andySC on Thursday 9th February 23:56

Sorry to go off topic a bit but you don't need to remove the block to change the PRV simply remove the pump assembly and then there is enough access to remove the old PRV and fit the new one.

As for the original post,as has been stated just ring Worcester and book a warranty call,it doesn't matter if it's registered or not.

Colin

Edited by vanman on Friday 10th February 19:15

[falkster]

Sorry my cock up, it's not a WB, it's actually a Main 30HE. I was told it was a Bosch by the previous owner as she was told by her builder (same happened with the dishwasher too)

[vescaegg]

Likely a leak under the floor somewhere. I had a similar problem. Tube of fernox superconcentrate leak sealer into a radiator sorted it.

[falkster]

vescaegg said:

Likely a leak under the floor somewhere. I had a similar problem. Tube of fernox superconcentrate leak sealer into a radiator sorted it.

It's a pipe on the boiler that's leaking through the outside.

[andySC]

In that case it's a piece of cake to swap. PRV is held in place with a small hex grub screw & once this is out it should be a sinch.

Check the pressure vessel also.

[falkster]

andySC said:

In that case it's a piece of cake to swap. PRV is held in place with a small hex grub screw & once this is out it should be a sinch.

Check the pressure vessel also.

So you'd be able to mend it in no time??
What part of Yorkshire are you from

[andySC]

falkster said:

So you'd be able to mend it in no time??
What part of Yorkshire are you from

Based around Doncaster, South Yorkshire.

I'm out of action all next week anyhow....4 days of training unfortunately.

[Cogcog]

Ferg said:

If the 15mm pipe from the safety relief to the outside is 'running' when the gauge is showing less than 3bar then it's fked. Replace valve, and it's sorted.
However, it may be a sign that the pressure vessel is either empty of pre-charge or actually knackered. If it isn't operating correctly then any expansion in the system (naturally occurring due to heating) will open the relief valve and continual topping up will gradually wear the seat out.
Continual topping up will also promote rusting in the system..

This. We had a new pressure vessel installed on the same symptoms in our last house.

[Du1point8]

Last time the water was being pumped outside from the over flow pipe it was the PRV... cost me £95 to replace, but Im thinking you should be able to get it on warranty...

Can normal DIYer fix it and it still be covered or should the boiler company do it?