The system was working well in July:

  • 6AM: AC turns on and reaches target temperature of 77 deg

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Although it is a heatpump in cooling mode, I will refer to the system as an AC for convenience.

The data shows issues:

  1. 6AM: AC does not turn on to cool home to target = 77 deg
  2. 2-8PM: Blue bars show that AC is not running more than 15 in any given hour
  3. 2-8PM: Target temperature is never reached (80 deg)


Is it possible to discern from the data the root cause of the issues?

  • Update: CT80 Radiothermostat replaced to resolve problem – gatorback Jan 11 at 1:12

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