True z4 Owner's Manual page 40

Diagnostics
E1:STALL
E2:OVERSPEED
E2:CAL
E3:RECAL
E5:SENSOR
Diagnostics - Service Messages
The following service messages will be displayed as they
occur, as well as for the subsequent six safety key insertions.
These messages will be displayed until a key is pressed.
Every time these messages are displayed, an audible beep will
sound twice.
S1:LUBE
S2:CLEAN
S3:MOTOR
37
Incline not moving when commanded
to.
This error occurs when an acceleration
>2.1 mph occurs. Error cleared by
turning off power switch then turning
it back on.
Feedback cannot reduce or increase
speed to target. Error cleared by
calibrating.
This error occurs when a data error is
detected on the EEPROM, replace the
control panel.
This message is displayed when there
is no speed feedback.
This message is displayed when lubrication of
the deck is recommended.
This message is displayed every 500 miles.
Prompt to clean treadmill.
This message is displayed every 2500 hours.
Prompt to check motor brushes.