ch and dhw working fine. System pressure is 1.5bar. On ch water coming from prv. Changed prv still the same. Doesn`t do it all the time. Bypass radiator fully open. Other radiators, furthest away also fully open still the same. Any ideas. I have 11 rads. System was working fine. Problems got worse over the last few weeks.When system is off pressure drops back. But i have noticed with ch running pressure was up to 2.5 bar
Worcester Bosch 35cdi
- Thread starter mrtoastie
- Start date
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possible expansion vessel. how many rads do you have and is there a lot of pipework.
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