Scrap it. This will achieve two things - firstly it'll stop you bug9ering about with boiler settings you don't understand, presumably without the correct tools to be able to test what you're doing, and secondly it'll relieve you of a heap of junk made by a company which no longer exists and which has a limited supply of extremely expensive spare parts
If you need to find a tradesperson to get your job done, please try our local search below,
or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Please select a service and enter a location to continue...
Are you a trade or supplier? You can create your listing free at DIYnot Local