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