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Mend Worcester 28SI II Warning Light Flashing

The warning light is flashing red on my worcester 28si II ?

Heating not working, red warning light flashing, ignite button doesn't seem to work, dont want to press it too hard incase i break it,i dont have a manual as i have just bought this house

Karen
March 2012
WorcesterWorcester 28SI IIHeating, Home Heating SystemsWarning Light Flashing
Get user manual from below link, but does not tell you much, check the pressure dial, should be about 1, if not use fill loop to top up.

http://www.worcester-bosch.co.uk/homeowner/literature/discontinued-product-literature/discontinued-gas-boiler-literature/28si-ii-discontinued-june-2007-literature

SD
March 2012

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Worcester 28SI II Red Light - No Heating