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Worcester Greenstar 25CDi cuts out several times a week and we have to press the reset button It shows a code 8.8 as |I press the button?

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6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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  • 5 Answers

SOURCE: worcester bosch greenstar 25Si?30Si pressure gauge showing high

a couple of things , is your filling loop disconected ? , and are all your radiators blead from air, have you got a high point where the air can get stuck in system say pipes going into roof etc you may need to fit a air release valve in line at highest point to remove the air from system , your boiler should be around 1.5 bar running preasure average setting . if you are constanly filling with water you could be exceeding the pressure valve limet which releases pressure from system this could be faulty ?

Posted on Feb 05, 2009

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  • 13 Answers

SOURCE: Bosch boiler System

it means that the boiler wants to be serviced, the boiler will still work fine. Once the boiler has been servcied, there are a succession of buttons, that need to be pressed, to tell the boiler that it nhas been serviced. then 365days after it will do it again. Its there to prompt you, to get the boiler serviced

Posted on Mar 03, 2009

  • 234 Answers

SOURCE: worcester boiler 2 years old keeps loosing pressure

http://www.worcesterbosch.com/Go there see if you can get some help.

Posted on Mar 19, 2009

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The water pressure on my Greenstar 25Si Worcester Bosch combi boiler is so low that the shower won`t heat up. Can someone please tell me how to increaese the water pressure as there doesn`t seem to be an...


The boiler has a filling connection which uses a filling loop to connect the boiler to the mains supply for the initial fill and subsequent fills.
See the link below from the manual you can buy the filling loop connection online or ebay its a simple task to replenish the pressure. Worcester GREENSTAR 25Si Instruction Manual Filling The System

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Worcester bosch greenstar 25Si?30Si pressure gauge showing high


a couple of things , is your filling loop disconected ? , and are all your radiators blead from air, have you got a high point where the air can get stuck in system say pipes going into roof etc you may need to fit a air release valve in line at highest point to remove the air from system , your boiler should be around 1.5 bar running preasure average setting . if you are constanly filling with water you could be exceeding the pressure valve limet which releases pressure from system this could be faulty ?

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Bosch boiler System


it means that the boiler wants to be serviced, the boiler will still work fine. Once the boiler has been servcied, there are a succession of buttons, that need to be pressed, to tell the boiler that it nhas been serviced. then 365days after it will do it again. Its there to prompt you, to get the boiler serviced

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