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  • August 3, 2024 at 11:47 am #1746
    theachub_m40wgrTheAChub
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      Code Text Description Cause Check Procedure
      6840 A-Control E6/E8 fault. Indoor/outdoor communication error. Mainly caused by outdoor unit being powered up before the indoor unit. Check interconnecting cable, check for pumps wired in to S1-S2, check indoor isolator, repower in correct sequence i.e. indoor then outdoor.
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