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  • August 3, 2024 at 11:54 am #1763
    theachub_m40wgrTheAChub
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      Code Text Description Cause Check Procedure Technical Support Notes
      7102 Error in number of connected units. The outdoor unit is not seeing any indoor units or it is seeing more than the allowable value. Check voltage on M-Net, power to the BC box, check dip switches are set correctly on the BC box and the model type of BC box is correct for the system. Check the voltage on the M-Net at the outdoor unit (it should be 29vdc). If there is no voltage then power down and remove the M-Net and check the terminals again. If you then get 29vdc then there is an issue somewhere on the M-Net, a loose connection or short maybe.
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