A) Inspect the connection between the display console and handlebar. Reset connection if necessary. Access the heart rate diagnostics by pressing 9,1,9, ENTER, and then press HEART RATE PROGRAM key. Test the heart rate monitor by placing your hands on the handlebar sensor. Look in the INSTRUCTION window for your heart rate to be displayed.
B) Replace the handlebar if faulty.
C) Test unit with a known good display console. Replace display console if necessary.