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Hello, the high winds have certainly caused some problems, however your boiler doesn't have a pilot light that can blow out.
F9 suggest that the system pressure is low. Have you checked the system pressure? If you decide to increase it, please tell me the value before you do it and the new value after you've done it.Also, please press the '-' button for at least 5 seconds, until 'S' begins to flash, and tell me what number is reported.
Please don't take this the wrong way, but it's going to be really hard to guide you if you don't follow my suggestion and instead do several random things that yield a bunch of numbers.Before I suggest the next step, and preferably before you touch anything else, I need to know the current system pressure.
Please see the attached document.Reading the pressure is covered in section 11.1 on page 37.
The pressure should not be dropping like that. If it was 1.4 before you increased it, and if it really was 9.1 bar afterwards, then I expect you've added a new problem.This topic will stay open until you're happy that the boiler is working and stable, so I expect we'll be exchanging posts tomorrow at some point (as well as later tonight perhaps).
OK Gregory. Good luck with the Glowworm engineer.If you're happy with how I've helped, your rating (using the five stars at the top of this page) will enable me to receive a credit for my time.