I've had my Worcester Greenstar boiler installed and working well for over 10 years now.
Late last year it started to lose pressure slowly.
Water was leaking out of the overflow outside.
A local Worcester recommended plumber came and serviced it and replaced the pressure relief valve. This slowed the pressure loss for a while.
However the pressure/water loss has increased and now means I am having to top it up at least once a day. It drops from ~1 or 1.5bar to zero in a few hours.
No water is leaking out of the overflow outside. I did tie a bag over the condensate drain into the sink overflow, and overnight (with heating on low) it did collect about half a pint of water.
I've previously inspected as much of the groundfloor radiator pipework as I can, and found no leak. Though to be fair that was before Christmas when the leak was much slower.
Is there anything I can do to be certain that it is a radiator leak or a boiler problem? e.g. isolate the bolier from the pipework, to see if I still get a pressure drop? I understand I would need to turn the boiler off while doing this.
Obviously if it's pipework, I need to be getting floors up
If it's the boiler e.g. faulty heat exchanger I would get a Worcester Engineer in to fix it. Problem is I don't want to pay Worcester £230 for them to tell me it must be a leaky pipe.
The local plumber is suggesting the best option is leak sealant.
Any suggestions would be very helpful.
Steve
Late last year it started to lose pressure slowly.
Water was leaking out of the overflow outside.
A local Worcester recommended plumber came and serviced it and replaced the pressure relief valve. This slowed the pressure loss for a while.
However the pressure/water loss has increased and now means I am having to top it up at least once a day. It drops from ~1 or 1.5bar to zero in a few hours.
No water is leaking out of the overflow outside. I did tie a bag over the condensate drain into the sink overflow, and overnight (with heating on low) it did collect about half a pint of water.
I've previously inspected as much of the groundfloor radiator pipework as I can, and found no leak. Though to be fair that was before Christmas when the leak was much slower.
Is there anything I can do to be certain that it is a radiator leak or a boiler problem? e.g. isolate the bolier from the pipework, to see if I still get a pressure drop? I understand I would need to turn the boiler off while doing this.
Obviously if it's pipework, I need to be getting floors up
If it's the boiler e.g. faulty heat exchanger I would get a Worcester Engineer in to fix it. Problem is I don't want to pay Worcester £230 for them to tell me it must be a leaky pipe.
The local plumber is suggesting the best option is leak sealant.
Any suggestions would be very helpful.
Steve