Symptom: The Performance Monitor is displaying other error codes (E001–E010).
Resolution: These codes may indicate a more serious problem with your monitor. Try to clear the error as follows:
- Change the batteries.
- Press and hold the four bottom buttons on the face of the monitor (Recall, up arrow, down arrow and OK).
- While holding these buttons, press and release On/Off.
- Release the four buttons. The monitor will do some fast counting for 10–15 seconds and then display a number 5 in the center area.
- When the 5 appears, press and release On/Off again. Zeros should come up, and the monitor should work. If it doesn’t, you may need to replace the PM.