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My ecobee3 is not powering up after installation. What could be the reason?

My ecobee3 is not powering up after installation. What could be the reason?

If your ecobee3 does not power on, please check the following:

  1. Check that all wires are properly inserted into the terminal blocks at the thermostat. Tug on the wires to ensure they are not loose
  2. Ensure that the power is turned on from the circuit breaker
  3. Some HVAC equipment have a safety switch that cuts off power to the equipment if the equipment cover panel is not closed properly. Please ensure the cover panel of the equipment is closed properly
  4. If you installed the Power Extender Kit (PEK), ensure R wire is connected to Rc only and G wire is inserted properly into the terminal
  5. If you have a multi-meter, please check the AC voltage between Rc and C or Rh and C and ensure it is 24V
  6. If your device still does not power on, please call ecobee support at 1.877.932.6233 (North America), 1.647.428.2220 (International)

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