First I've heard of it. Are you thinking of Geminox?
Our information is that Yorkstar were a UK company that went under some years ago. I take it you have one of their oil condensers and it keeps locking out?
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