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Recent content by fun33

  1. F

    2xPowerwall whole house backup - HVAC sure start problem

    My 2 Powerwalls were installed 2 1/2 years ago with a SureStart. In the past month, I have been hearing a 10-15 second high pitched tone coming from my outdoor HVAC coil where the Surestart is installed. Has anyone else experienced this high pitched tone? Is it an indication the Surestart is...
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