Hi Gilbert - my name is ***** ***** in the UK. If you could give me the model number of the appliance which will be on a label underneath the appliance I should be able to help you. However, kindly note that Diamond H Controls ceased to exist some years ago and the trade name was bought out by Backer and whilst a replacement energy regulator can be found it will require a change of wiring connection so I will have to get you the correct modification sheet to go with it. Look forward to hearing from you in due course.
Many thanks for that - had a weekend away myself - this is the item that you require - I copy a link for you, as this company supplies a modification sheet to allow you to fit the modern replacement as your original is obsolete. Kindly note 'do not take the wires off the old one' until you have the new one to hand or else you will not know what cable goes to what on the new one. Come back to me if you require further help. However in the meantime could I ask you to rate the information given by selecting from the star rating system at the top of the page. Thank you for using JA and have a great day.