A.O. Smith 3400 - Manual (Page 72)

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CODE DESCRIPTION
482 Internal error: Safety key bit 4 was incorrect
483 Internal error: Safety key bit 5 was incorrect
484 Internal error: Safety key bit 6 was incorrect
485 Internal error: Safety key bit 7 was incorrect
486 Internal error: Safety key bit 8 was incorrect
487 Internal error: Safety key bit 9 was incorrect
488 Internal error: Safety key bit 10 was incorrect
489 Internal error: Safety key bit 11 was incorrect
490 Internal error: Safety key bit 12 was incorrect
491 Internal error: Safety key bit 13 was incorrect
492 Internal error: Safety key bit 14 was incorrect
493 Internal error: Safety key bit 15 was incorrect
494 Internal error: Safety relay timeout
495 Internal error: Safety relay commanded off
496 Internal error: Unknown safety error occurred
497 Internal error: Safety timer was corrupt
498 Internal error: Safety timer was expired
499 Internal error: Safety timings
500 Internal error: Safety shutdown
501 RESERVED
MIX Errors
502 Mix setpoint was invalid
503 Mix time of day setpoint was invalid
504 Mix outdoor temperature was invalid
505 Mix ODR time of day setpoint was invalid
506 Mix ODR time of day setpoint exceeds normal
setpoint
507 Mix ODR max outdoor temperature was invalid
508 Mix ODR min outdoor temperature was invalid
509 Mix ODR low water temperature was invalid
510 Mix ODR outdoor temperature range was invalid
511 Mix ODR water temperature range was invalid
512 Mix demand switch was invalid
513 Mix ON hysteresis was invalid
514 Mix OFF hysteresis was invalid
515 Mix ODR min water temperature was invalid
516 Mix hysteresis step time was invalid
517 Mix P-gain was invalid
518 Mix I-gain was invalid
519 Mix D-gain was invalid
520 Mix control was suspended due to fault
521 Mix S10 (J10-7) temperature was invalid
522 Mix outlet temperature was invalid
523 Mix inlet temperature was invalid
524 Mix S5 (J8-11) temperature was invalid
525 Mix modulation sensor type was invalid
526 Mix ODR min water temperature setpoint was
invalid
CODE DESCRIPTION
382 Abnormal Recycle: Fan Speed Range High
383-450 RESERVED
Circulator Errors
451 Circulator control was invalid
452 Circulator P-gain was invalid
453 Circulator I-gain was invalid
454 Circulator temperature was invalid
455 Circulator outlet temperature was invalid
456 Circulator inlet temperature was invalid
457 Circulator outdoor temperature was invalid
458 Circulator sensor choice was invalid
459 Circulator PID setpoint was invalid
Debug Faults
460 LCI lost in run
461 Abnormal Recycle: Demand lost in run from
application
462 Abnormal Recycle: Demand lost in run due to high
limit
463 Abnormal Recycle: Demand lost in run due to no
flame
464 LCI lost in Combustion Pressure Establishing
Period
465 LCI lost in Combustion Pressure Stabilization
Period
466 RESERVED
Internal Data Faults
467 Internal error: EEPROM write was attempted
before EEPROM was initialized
468 Internal error: EEPROM cycle count address was
invalid
469 Internal error: EEPROM days count address was
invalid
470 Internal error: EEPROM hours count address was
invalid
471 Internal error: Lockout record EEPROM index was
invalid
472 Internal error: Request to write PM status was
invalid
473 Internal error: PM parameter address was invalid
474 Internal error: PM safety parameter address was
invalid
475 Internal error: Invalid record in lockout history was
removed
476 Internal error: EEPROM write buffer was full
477 Internal error: Data too large was not written to
EEPROM
478 Internal error: Safety key bit 0 was incorrect
479 Internal error: Safety key bit 1 was incorrect
480 Internal error: Safety key bit 2 was incorrect
481 Internal error: Safety key bit 3 was incorrect