Worcester 35 CDi Pressure Gauge

6 Jan 2008
Reaction score
United Kingdom
Earlier on the Boiler went off and indicated an air flow fault. Repeatedly fast flashing hot water demand light. I have had a leaking Bypass adjuster screw and thought maybe this was the reason. I decided to empty the boiler by opening the PRV. The indicator didn't change. When filling it didn't change. I now presume the pressure isn't registering. I managed to fill it enough to start the boiler. But the situation isn't ideal or safe I presume.

Is there a way to check what is stopping the dial from working? WOuld it be a new dial or is there anything else which would cause this. I signed up to Npowers homecare last week, but there is a 28 day period where you can't call them in. Just need to last a few more weeks.
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