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