Yes, the flashing light on your Webasto controller is a very useful error fault blink code. Please see attached image explaining how to count the flashes and then how to interpret the number of flashes to discover the exact fault. All good. This Webasto service repair set is often used to fix Air Top 2000 heaters. I think initially though we should work a little to find your exact fault.
Please let me know your blink code and let's fix your heater quickly. It's still cold outside.
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