LakeShore 330 no power output for heater

Providing you have a P value that is greater than 1 and your setpoint is higher than the control sensor temperature, if you have no output, there is most likely a defective component in the heater circuit and there nothing you can do other than purchase a new controller as we no longer offer repair service for the Model 330.

I suggest you reset the controller to factory default values, then reconfigure the controller and if it still does not work, there is nothing you can do other than replace the controller.

To reset the controller, press and hold the Escape and Units buttons in for approximately 20 seconds and when all of the LED's light release the buttons.