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Rick Ridley
Rick Ridley, UK Heating Engineer
Category: UK Plumbing
Satisfied Customers: 1561
Experience:  30 Years on the tools, now retired, Ex CORGI
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I've got a Baxi 553. Fully pumped with seperate gravity HW.

Customer Question

I've got a Baxi 553. Fully pumped with seperate gravity HW. Problem is the boiler fires up for a minute then cuts out, Like there is an airblock in the boiler itself.
Submitted: 1 year ago.
Category: UK Plumbing
Customer: replied 1 year ago.
552
Expert:  Andrew Smith replied 1 year ago.

Check the header tank first and ensure it is full of water and that the arm on the balltap is not stuck.

Customer: replied 1 year ago.
Header tank is full and the ball tap is moving freely. Hit water seems to be slowly moving around the system now but I think I'm going to have to bleed it every few hours.
Expert:  Andrew Smith replied 1 year ago.

Try on hw only and turn the thermostat right up, it will help with the gravity circulation.