The Fault LED indicator is lit on my Echo DINrail Mount Station Power Supply.
The Fault Indicator will illuminate if the + (positive) or - (negative) is shorted to ground or each other, effectively stopping communication. This could be caused by a faulty device on the wire, or by a short on the wire itself.
- Start by unplugging the green 'Echo Station Bus' header from the Station Power supply. Use a voltmeter set to DC voltage to meter across the ground (Pin 3) and negative (Pin 2) on the Station Power supply (see image below). A measurement of +/- 23VDC between the conductors indicates a functioning power supply. NOTE: All voltage readings +/- 10% from stated values are acceptable.
- If the Station Power supply is not the issue, plug green 'Echo Station But' head back into it and remove one device from the EchoConnect bus at a time until the Fault indicator goes out.
- If removal of devices does not clear the fault, the wire should be inspected by a certified electrician.