Evolution Control does not power up

What does EVOLUTION_CONTROL_NO_POWER mean?

The Evolution Control user interface is not turning on. This prevents system operation and control.

• Wiring issue to the Evolution Control
• Power not supplied to the indoor unit
• Blown fuse on the indoor unit's circuit board
• Faulty Evolution Control unit

Click steps to track your progress.

1. 1

   Recheck all ABCD wiring connections at the Evolution Control and other devices.

2. 2

   Ensure all wire colors match terminal connections.

3. 3

   Confirm power is supplied to the indoor unit (check for a lit amber LED on the circuit board).

4. 4

   Check the fuse on the indoor unit's circuit board.

5. 5

   Test for 24VAC between C and D terminals at the Evolution Control.

6. 6

   Contact an HVAC technician if power cannot be restored.