I have an Ideal icos HE18 boiler.
I drained the radiator system yesterday and now the boiler has a flashing c on the led screen but won't ignite.
Normally the c flashes during the ignition and then goes on full as does the boiler light, but now I hear the boiler try to light but then stops and the light and c continue to flash.
Could this be any thing to do with me draining the heating system (I was fitting a new raditor)?
Any Ideas appreciated.