Cybex Pro+ Treadmill Service Manual
Service
Page 4-4
Error Codes
Error codes notify you of a problem condition and are displayed on the center of the console. These
codes can also help to indicate the part of the treadmill most likely to be causing the problem. Errors that
present a hazard to the user provide a measure of safety by causing a one second beep, stopping the
treadmill and locking out operation of the treadmill.
A log of errors can be viewed and cleared. Enter Test Mode and press the Pace (Min/km) key to display
the log. The most recent error is always fi rst in the log. Press the Pace key again to cycle to the next the
error stored. Up to 10 errors can be stored. Press the Scan key twice to clear the error log. Press Stop to
exit Test Mode.
NOTE: A processor upset can cause a bAd#. See H then G.
Error Description
bAd0 Bad checksum. See H then G.
bAd2 Internal RAM error. See H then G.
bAd3 Watchdog timeout. See H then G.
Err1 Belt didn't start (or no speed sense). See I, E, D, B then A.
Err2 Underspeed (2 mph for 2 seconds without correction in process). See I, E, C then B.
Err3 Speed sense lost. See I, E, A, B and C.
Err5 No 0 switch sense within timed limits. This is declared when the timed
elevation reaches -2% without tripping the index. See F and A.
Err6 Overspeed (1 mph for 1 second or 2 mph for 0.2 seconds without
correction). See I, E.
Err7 EEPROM error (memory lost, loads new defaults, enters Test Mode). See G.
Err9 Brush wear too low. Indicator has been activated for over 100 miles. See D.
ErrE 0% always on (or switch disconnected or wired backwards). This means
that timed elevation has gone up 2% and the index is still sensed. See F.
Action
A Check lower board
B Check drive motor
C Check belt and deck
D Check motor brushes
E Check speed sensor
F Check elevation motor
G Replace display board
H Turn the treadmill to the off (O) position and back on (I)
I Perform speed calibration procedure
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