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

Gauge normally showsreading between 1-2 which i take to be correct. however when the heating was switched on today the gauge showed nearly 3. it started to drop after heating was switched off.

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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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Boiler fires for short time only then seems to switch off. we have tried over ride button but it only works for few seconds

Posted on Jan 08, 2010

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