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Sorry to hear about your problem.
F1 - E2 fault code means you have UL A/D error(s). You need to perform the following test:
1. Disconnect power for at least 30 seconds.2. Re-apply power and observe for at least one minute.3. If code re-appears, replace the control board (also called ERC or clock).
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Best of Luck, Brian
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Can you tell me the part number for the control board?
Thanks again, Lee