From Page 31 in your manual Lee:
Maintaining and servicing your locomotive
Locomotive Diagnostics
Your locomotive includes built-in diagnostics to monitor the condition of the main drive motor
and smoke system. If a problem is detected, the locomotive's cab light will blink a diagnostic
code.
If you see the light inside the cab flashing, press RESET (for LEGACY operation), 0
(for TMCC operation), or DIRECTION/power interruption (for conventional operation)
to attempt to clear the problem. The locomotive will immediately check itself again. If the
problem persists, the cab light will blink the code again.
Note that smoke-related errors can be reset a maximum of three times. On the third try,
if the problem still persists, the smoke unit will be shut down and must be returned to Lionel
Service for repair.
Turning the smoke unit switch to the off position will disable diagnostic checks of
the smoke system.
Number of Blinks Diagnostic Code Description
1 Main drive motor stalled.
2 Smoke 1 element problem.
3 Smoke 1 fan problem.
4 Not applicable.
5 Not applicable
