I have replaced the diverter valve,the fan ,thermistor and potentiometer involving two visits from CORGI fitter.On Saturday pm therewas no firng up and no voltage to fan which did not run.I am planning to renew the driver board.The fitter believes this in needed and the fault-finding seems to confirm this.I really would value a third opinion on this.
PS I plan to buy a new air pressure switch just in case.
PS I plan to buy a new air pressure switch just in case.
