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F5 fault ?
Clearing a blockage from a heat exchanger?
I recently repaired a leak on a rad valve, ?
My Glow-worm Flexicom 30SX looses pressure 0.0?
Is it normal that the flame is burning all the time?
Glow-worm 40B system top-up and inhibitor issue?
central heating wont turn off?
what causes the sabre he 25 to come on, on its own?
Glow.worm ultracom 38 cxi showing f25 faultcode?
what dose fault f4 mean?
sabre 24?
how can l fix my gas control valve?