Worcester Bosch CH Problem

[pe2dave]

Worcester Bosch engineer due in an hour or two, will see what he has to say. Can't change frequency and pretty certain I've ruled out external RF interference because if I put the controller clock time wrong for time of day, the boiler still fires up at the same clock time, around 4.30.

Don't let the eng blame 'interference' then, they should be able to find the problem?

 

[user22161]

Job done. Friendly feller from Scouseland agreed it was faulty time clock and replaced without question. Then checked the installation and boiler performance and declared all OK - time will tell. Thanks to all for the suggestions.