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Bmu err shown on thermostat glow worm boiler shown f4?

Bmu err shown on thermostat f4 shown on actual boiler what does this mean

Jackie
March 2014
Heating, Home Heating SystemsThermostat Worm Boiler

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Mend Heating, Home Heating Systems

Worcester boiler dripping water?

Worcester boiler dripping water, can I just tight the screw? The icon next to the valve looks like radiators... [Read more]
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My boiler only fires up for about 90 seconds greenstar 4000
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