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I have a CT101 attached to an Iris pannel why is the yellow light blinking on the thermostat?

Last Updated: Apr 24, 2015 06:08PM UTC
There are several reasons that the yellow light will blink all have to do with the thermostat running on battery only

Here are the reasons: (Yellow Light Events)
  • When the power is restored after an outage and the thermostat detects battery power only.
  • When you push the reset button and the thermostat detects battery power only.
  • When the thermostat detects that the C wire power was removed

The Yellow blinking light will turn off:
  • When the thermostat detect C wire power
  • Forty minutes after a yellow light event

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