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Nautilus® Sport Series Treadmill Service Manual
CONSOLE CODE SUMMARY GUIDE
movement then replace elevation motor.
“ERR GRAD2” GRADE MOTOR MOVES WITHOUT COMMAND
Indicates grade pot count changes by 3% or more.
• Change grade motor.
“ERR GRAD3” GRADE POT COUNT IS 1%+ OUT OF CALIBRATED RANGE
• Recalibrate and if not corrected then replace motor.
LE STUCK KEY TEST
At power up if any key switch in overlay is stuck the appropriate error code will identify which key.
NOTE: Pressing key may free up switch but overlay should be replaced.
KEY: ERROR DISPLAYED:
STOP “Err STOP”
UP “Err UP”
DOWN “Err DOWN”
FAST “Err FAST”
SLOW “Err SLOW”
ENTER “Err ENTER”
START “Err START”
PROGRAM “Err PROGRAM
NOTE: LEX and LC error codes will freeze electronics. Switch by power cord must be recycled- turn the
switch off for 30 seconds.
“LOSS OF SIGNAL”
SEE “ERR LS” ABOVE.
“OVERSPEED ERROR”
SEE “ERR OS” ABOVE.
“GRADE ERROR 1”
SEE “ERR GRD1”ABOVE.
“GRADE ERROR 2”
SEE “ERR GRAD2” ABOVE.
“GRADE ERROR 3”
SEE “ERR GRAD3” ABOVE.