Boiler Fault Finder

Radiator Problems

Radiators warm up when hot tap opens / central heating flow pipe very hot with radiators hardly getting temperature rise Fault Fix faulty diverter valve (faulty wax capsule or bobbin assembly) replace valve Radiators warm up when no hot tap is open and the timer is in the off position (timer working correctly) Fault Fix domestic hot water micro switch stuck in NC position replace dhw micro switch

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