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Base Station red light blinking fast – Disconnected wire warning

Base Station Head - RS Models

Step 1 – Check that Power Supply box isn’t hot and all connections between the Power Supply through the 65ft (20m) extension cord, to the base station, are connected well. Check that green plot connector and its two lawn wire ends are connected to base station head.

If Yes – Proceed to Step 2.

If No – Secure all connectors back in place and observe if the warning persists.

Step 2 – Make a small lawn loop using the second green plot connector that was supplied with the mower, or the same green plot connector used now. See picture below. Does the light continue blinking red?

Base Station Head - RS Models

If Yes – Proceed to Step 3.

If No – Proceed to Step 4.

Step 3 – Take the Power Supply and connect it directly to the Base Station Head (small green wire loop still connected). This will bypass the 65ft (20m) extension cord in order to find out if it is the source of the problem.

Does the red light blinking continue?

If YesReplace Base Station Head corresponding to your mower’s model year.

If No – Replace the 65ft (20m) extension cord.

Does the red light blinking continue?

If Yes – Proceed to Step 4.

If No – Problem solved. Send the mower to mow to confirm that all is functioning properly.

Step 4 – Check for good connection – not loose and no corrosion on the two perimeter wire ends connecting to the green plot connector at the Base Station Head.

Green Plot Connector - RS Models

Does the red light blinking continue?

If Yes – Use a voltmeter (DVM) set on resistance and see if the wire length equals the resistance anticipated. Simple formula: every 330 feet of wire should generate 2.2 Ohms of resistance when all the splices are in working order. For example, 800 feet (243m) of perimeter wire used in a lawn should read a resistance around 5.3 Ohms.

HOW TO CALCULATE RESISTANCE IN OHMS
1) Perimeter wire length (in feet) divided by 330
2) Multiply the result by 2.2

Person testing resistance of perimeter wire - RS Models

Did you get resistance value over the 2.2 Ohms per 330 feet (100m) calculation?

If Yes – Go to Step 5.

Step 5 – Look for and fix a break or bad splice in the perimeter wire. See the article Finding a break in the wire.