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I have 3 Deco P9 units purchased through Amazon in June 2020. 2 of the 3 them have developed an annoying high pitched buzzing noise.
I have reset the system, swapped them around and still the noise persists.
Hi, Thank you very much for the feedback.
Did the noise follow a specific Deco P9?
Could you please help me check the SN number on the P9?
After that, it is suggested to contact the local shop retailer to check for warranty service.
Best regards.
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