Base Station light blinking alternates between red and green

Step 1 – Make sure the Power Supply is connected well and that there is power in the wall outlet.

If Yes – Proceed to Step 2.

If No – It seems there is no power in the socket. Connect to a live outlet.

Step 2 – Connect the Power Supply directly to the Base Station Head. This will bypass the 65ft (20m) extension. Is the Base Station Head still blinking red and green?

If Yes – Replace the Power Supply.

If No – Proceed to Step 3.

Step 3 – Replace Base Station Head corresponding to your mower’s model year. Is the Base Station Head still blinking red and green?

If Yes – Proceed to Step 4.

If No – Problem solved.

Step 4 – Check the perimeter wire for bad splices. Disconnect the plot connector from the Base Station Head and check with voltmeter (DVM) the resistance of the entire loop. The factor is about 2.2 Ohms per 330ft (100m) of wire. Here are the max wire length and resistance for various RS and XR3 year models:

Model Years Maximum Wire Length Maximum Resistance
2019-2020 Up to 2500 feet (762m) 17.6 Ohms
2018
(using a long wire docking head)
Up to 2500 feet (762m) 17.6 Ohms
2018
(not using a long wire docking head)
Up to 1500 feet (467m) 10 Ohms
2014-2017
(using a long wire adapter)
Up to 2500 feet (762m) 17.6 Ohms
2014-2017
(not using a long wire adapter)
Up to 1500 feet (467m) 10 Ohms

Is the resistance higher than the max numbers mentioned above per your mower model?

If Yes – Find a bad splice or reinstall a new wire, preferably without splices.

See the article Finding a break in the wire.