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- 5 Mar 2018
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Have an ideal logic combi 30 that's not giving central heating as of 5 days ago. Boiler is about 5-6 years old. Thermostat was dropping out a lot and kept having to tap it until it just came on no longer. Bought and fitted a new one today. Still no heating. Hot water working fine. Can get boiler to display 'c' and burner light will come on for about 20 seconds then go out. It is trying to come on but can't. Drained the last radiator today and the burner light came on a lot more and the pipes would warm up but once I stopped draining it would just go back to c and no light again. Does anyone know what this means?