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thanks for all replys on previous posts. ok,sealed systems loseing pressure on a regular basis,things done,new expansion vessel,auto air valve and pressure safety valve changed,exp vessel connector not blocked,pressure only drops not going up. powermax 155x boiler. 99% of pipes to rads in...

this is the situation,business partner has a bg contract had annual check up on friday,everything working well and no problems with boiler. bg told him he needs a power flush as the system is blocked up,bg guy came to this descision after recalling several overheating errors on display panel on...

this is my neighbours boiler,they are on a bg carehome contract,their problem is that their system loses pressure from 1.75 bar to zero in 5 weeks. parts changed so far.2 expanding vessels.2 pressure reliefs and 2 auto air vent.all in last 9 months. now they just turn up and repressurise,my...

any help here would be great,ok i have the above beast. problem is boiler fires up heats water ok then when heating radiators goes to lockout,although radiators are quiet hot but not hot enough,boiler trys to fire a few times then lockout. the gas can be heard to light for a second then...