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Problem with Potterton 80 combi Boiler?

Boiler gauge is stuck on 4 bar and will not drop, cannot move it in any way.

Help Please!
PJ, July 2008
check your filling loop is not open or passing...usually a silver braided colored hose under boiler. combis are set to discharge at 3bar..so it looks like you have mains pressure going through

corgi bloke, July 2008
link Click here to see other fixes for Potterton.