Hi i have a vaillnt eco tec pro 28 about 6 years old in ch mode pressure loss through prv also problem with system pressue if it falls below 1.3 bar boiler cuts out
If water is escaping out if the PRV whilst boiler is fired up then I would be checking the expansion vessel. If you're someone that knows your way round a bag of tools then you could probably recharge it yourself, otherwise you should call an engineer. If it is only a recharge that it needs as opposed to having a split diaphragm then it shouldn't cost more than £80 + vat. At least that's what I charge to re-pressurise a vessel on that boiler. It should only take a second or two to determine whether you need a new vessel or not.
If you need to find a tradesperson to get your job done, please try our local search below,
or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Please select a service and enter a location to continue...
Are you a trade or supplier? You can create your listing free at DIYnot Local