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what dose fault f4 mean?
F5 fault ?
I recently repaired a leak on a rad valve, ?
how can l fix my gas control valve?
Clearing a blockage from a heat exchanger?
sabre 24?
My Glow-worm Flexicom 30SX looses pressure 0.0?
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?
Glow-worm 40B system top-up and inhibitor issue?
Glow.worm ultracom 38 cxi showing f25 faultcode?