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HI can be many things sensor faulty/loose heat ex scaled etc

HI need more details. do you have to reset the boiler ?

HI i have done these before .absulutely nightmare.use flexible pan connector and flexible water pipe.and push the bloody w.c back to the wall and you cannot screw this particular type. or even better bin it. stupid design.

HI sorry but no hw does not mean pump is fault.can be many things.

HI yes tibbot is right.repositioning the pump can change many things.possible faults to your problem 1.pump speed too high (try n. 2 ) 2.pump fitted in the incorrect place (not followed the feed and expansion rule ) 3.pump fitted wrong way 4.auto by pass not fitted so when the rads are...

HI if there is any drain valve fitted then yes .

HI i would go for 831 or 837.good boilers.

HI need more details if possible attach some pics.

HI easy 1.turn the boiler off 2.undo any radiator valve (pick closest to the outside door) 3.slowly drain entire system (few buckets of water) 4.fit new rad valve with drain (for future ) 5.repair the leak (upstairs ) 6.refill the system 7.bleed the rads 8.turn the boiler on...

HI fill the system to about 1.5 bar . bleed all rads. your boiler should run .

HI check expansion vessel for correct charge about 1 bar when system empty.

HI Does the water leak from prv ?

HI please do not try this particular model .you will end up in tears or water in this case .ha,ha,ha.

HI 1.check the plan 2.calculate size of the rooms 3.distance from the boiler to rads,etc 4.plus more really you need your tutors help

HI not simple my friend. 1.prv leaking outside 2.expansion vessel faulty 3.leak in the system 4.plus more

HI connect to LR and LS.

HI agree with the last post.28cdi i find nightmare.

HI you would get better answer from worcester.

HI heatline oh no.

HI 1.combis are easy 2.less pipework 3.etc