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main driver board zagas 125. had same problem with hot water.you will get one on ebay cheap

try a piece of garden hose slit it down middle then wrap it around pipe does the job

hi does shower go hot when heating is on.and also can you reduce cold supply to shower with an iso valve as cold controls temp.

your right or got new boiler :oops:

now back to some help for the guy.keel do you have to press the reset button on top of boiler.try taken tube off fan and suck or blow on it. its connectd to the air pressure switch if it ignites boiler its faulty

how is it difficult to understand .single channel programmer controls both pumps .lifestyle lp711.when c/h on hot water was fine.when just a demand for h/w it was tripping c/h pump not fully on but enough for the c/h flow pipe to heat up. now wired just with original operating switch.not heating...

why do you some of you,se guys always have to be so negative not every problem needs to have corgi engineer.how do you no its not had a service.people are given you symptons of there problems for some advice to fixing it.if your not going to be helpful dont answer.if its not gas related you...

just to let you know boiler now working perfect.problem was faulty external programmer.not bad for a diy,er not .wifes tits nice and warm now. :D lol

i see yous guy no nothing about worcester boilers.if i didnt no what i was doing i wouldnt be touching it.when c/h pump diconnected its fine. only looking for a solution to fixing it.all boilers have fuses and saftey cut out switch if you didnt know ?

sorry ive posted this as a new topic

hi ive just put the c/h pump connection back on to the pcb and it is doing the same again hot water demand is heating c/h flow pipe.heating is fine and hot water is fine when heating is on.also checked if c/h pump came on at the same time as the h/w pump no it doesnt.but when i disable c/h...

hi there ive just disconnected the c/h pump from the pcb .the c/h flow pipe doesnt heat up anymore when there is a demand for hot water.so do you think its either the pcb or c/h pump.hot water is alot better know i used have to turn it on and off a few times before it would light with the c/h...

hi the cleaner was only supposed to be in for 8 hours .but left it in for a few days water in it wasnt that dirty.heating fine .as i said it has two pumps so there is no divertor valve.

c/h flow pipe heats up when there is a demand for hot water. this boiler has two pumps.had cleaner and flushed and new inhibitor done last week.dont know if it was doing this before it was cleaned

had same problem just put some ptfe tape around it will have to drain boiler first then.count the turns on it when removing it and the same cont screwing back on.

flow switch is for water only so its not that.pressure should be 1bar when cold.check water pressure switch

it was changed a few years ago .i disconected it and tried the water it wouldnt go hot,connected on again and after a few on and offs it lights up

hi ollski ive checked temp sensor its fine.problem only when demand for hot water.but the hot water demand is fine when heating is on. ive also replaced flow switchi. i have to keep turning tap on and off until it eventually lights

, Post Subject: Worcester 350 combi fails to ignite -------------------------------------------------------------------------------- I've got a problem on a worcester 350 combi boiler that fails to ignite for 10-20 attempts. There is just a flicker of a flame and then it dies...

hi there got same problem as brian101 check it out.cheers