My controller says “PWR OFF” or No AC

My controller says “PWR OFF” or No AC

This error message indicates an electrical problem (wiring, fuse, etc.) The controller battery is operational, but it is not receiving power from the AC plug. Check to ensure the outlet the controller is plugged into is operational. Try another electronic device in the outlet or try the controller in another plug. If the outlet is a GFI plug, check the reset button. If this doesn’t restore operation, you will need to set up a service appointment. If the plug itself is not putting out power, you will need to contact an electrician

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