Verify that the green ground wire from the blue ECM board is connected to the red board on the quick connect (spade) terminal J14.
It must be connected to the chassis ground AND the red board.
ECM board not lighting up with power on the red board
Articles in this section
- A2L FAQ - R454B
- Adjusting Fan speed - Terminal Products with ECM board
- Air-Fi Wireless Sensor - How to set up for standalone operation with UC and no SC+ present
- Air/ Fan balance for ECM controlled direct drive units
- Autoflow Valves - Test and balance
- Belimo actuator CQB24-3 - Wired as 3-wire 2 position
- Belimo Valve and Actuator Parts- Terminal Products
- Belimo- 3 way valve stem orientation
- Cannot see the Softset button
- Commissioning Mode for UC400 in TU