when ch is on noticed prv was releasing water. pressure was high. i fit a new expansion vessel with various charges but no different. ch/hw work ok. when i release the pressure of ch back to 1 bar, put ch on, over a few hours it creeps up. over night the heating was off and pressure went up at least 0.5 bar. i now have noticed that when hw tap is turned on the guage flickers and goes up 0.2 bar, tap off back down.[filling key is out] i think it must be passing water from hw side [mains water]. boiler is about 3 years old.can anyone advise thank you regards tonyk
worcester bosch 35cdi 11 rsf
- Thread starter tonyk
- Start date
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