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We have 13 questions about mending 'code 28 pressure' in category Heating, Home Heating Systems which have been answered
Remove cover off gas boiler?
Oil fired boiler thermostat?
Worcester 30 Cadillac combi boiler won’t fire up and the EA?
How to fix my fireplace?
Greenstar 24Ri boiler, fast flashing - can I reset?
Worcester boiler dripping water?
Remove boiler cover?
Siemens RDJ10RF thermostat problem?
Vaillant ecotec 831 plus?