Combi -boiler tripped out by shower use

Without more precise model, difficult to search internet using http://www.google.com for possible suggestions. FIXYA, of course, is a free service, with unpaid volunteers attempting to answer "do it yourself" type questions and trying to provide answers to questions.

http://watermarcs.com/boiler-installations-newbury/worcester-bosch-greenstar-30cdi-combi-boiler/

Try this http://www.worcester-bosch.co.uk/installer/literature/discontinued-product-literature/discontinued-gas-boiler-literature/greenstar-35-he-plus-combi-discontinued-august-2003-literature and select part number
6 720 610 598 download it and follow the instructions. Good luck

http://www.worcester-bosch.co.uk/homeowner/literature/gas-boiler-literature/greenstar-15ri-literature. Hope this helps :)

The boiler may be over gassed or have the incorrect low / high pressures set. Recommend a service by a gas safe registered engineer

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

HI right first i would look at a worcester greenstar combl
best you can get and you have full back up from worcester leave all rads with stats as they are i think you will have to remove one , the that would be the bath room also the greenstar comes with a clock bulit in these are on the worcester bosch web site i have been a gas fitter fot 30 years and this what i would go with a really good combi, you can also get awire less room thermostat for this hope this helps

the code is SE saying it needs a service it can be reset go to this link for a pdf file showing how to http://www.worcester-bosch.co.uk/cache/file/239/guide-to-re-setting-the--se--code-on-greenstar-cdi-boilers.pdf

hi there, your boiler will perfectly match the mira excel ( a great choice i might add) a 24cdi will give about 9.8 litres a minute flow rate hot water.
The mira excel is suitable for any plumbing set up and there installation instruction are very well laid out & their helpline is fantastic.
The hot water will fluctuate accordingly to the time of year as the cold water temp coming into the property will vary. but the boiler will modulate to compensate.So in brief in the summer you will notice it hotter than you would in the winter, this has nothing to do with the boiler just the incoming temp of the cold water.

Kindly

Richie

just had same problem.  this apprently happens if the power supply has been interrupted or you switch the power on and off.
• The boiler runs for 15 minutes at minimum heat output to fill the condensate trap, the display (K) alternates between -II-” and the boiler flow temperature. This occurs every time the mains supply has been interrupted.