How to Troubleshoot the Transfer Switch MX60

Determine the problem at the control panel. The MX60 control panel has a series of LED lights that indicate system functions, including two S1 green lights, two S2 red lights, as well as push-buttons for a general unit test, automatic exerciser testing, bypass timer and a cancel button.

Check the S1 or S2 breakers if the lights are not lit. Also, check for under voltage, as there may not be acceptable voltage entering the transfer switch, meaning both power sources are under powered.

Look at the timer settings to see if they are operating. Often, if the switch does not transfer the load back to utility power, or the generator does not shut down, the timer is either running, or the automatic exerciser is in process. Press the cancel button to end these two functions.

Connect the keypad connector at the controller if all LED lights are off. This is the wiring connection that plugs into the MX60 controller. Check to see if the wiring is connected properly.

Replace the S1 or S2 switches, or check their connections if either the S1 or S2 lights are constantly blinking. This indicates a faulty switch or connection.

Look for a bad connection at the solenoid if both S1 and S2 lights are blinking. This indicates a faulty connection, or a bad solenoid.