A.O. Smith 240 T-H3J Service Manual page 64

12-3. Displaying error code history, Clearing error code history
memory and Display patterns for error codes
Displaying error code history
Clearing error code history memory
OFF during stand-by. For details on the error code, refer to p.47 - 57.
Green LED
Blinking one time
Blinking two times
240 (T-H3J), 340 (T-H3S) and 540 (T-H3) models Service Manial
Error Indication
on the controller
031 Blinking three times
701
711
311
321
331
341
391
441
64
Page
Temperature controller
Temperature remote controller
Error Indication
Green LED
on the controller
111
101
CONFIDENTIAL
Ver. 1.00
121
611
651
661
941
991
510
551
721