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Thanks, the annoying thing is its only just over 3 years old. Had an engineer to it today and when he arrived it was just flashing f12 whatever we did. He spent an hour or 2 testing it but was still not convinced what it could be. As I said earlier the fan at one point was almost like a...

Hi Has anyone any experience with a glowworm 38cxi flashing an intermittent f12 error code. The book says check connections from main board to user interface but they seem ok. Sometimes this error code does not come on but even then the boiler does not fire. The fan comes on but sounds to be...