A.O. Smith 2600, 3400, 1700, 2000 instruction manual Code Description, Allowed

Table 25.  ALERTS

CODE	DESCRIPTION
	EE Management Faults
0	None (No alert)
1	Alert PCB was restored from factory defaults
2	Safety configuration parameters were restored
	from factory defaults
3	Configuration parameters were restored from
	factory defaults
4	Invalid Factory Invisibility PCB was detected
5	Invalid Factory Range PCB was detected
6	Invalid range PCB record has been dropped
7	EEPROM lockout history was initialized
8	Switched application annunciation data blocks
9	Switched application configuration data blocks
10	Configuration was restored from factory defaults
11	Backup configuration settings was restored from
	active configuration
12	Annunciation configuration was restored from
	factory defaults
13	Annunciation configuration was restored from
	backup
14	Safety group verification table was restored from
	factory defaults
15	Safety group verification table was updated
16	Invalid Parameter PCB was detected
17	Invalid Range PCB was detected
	System Parameter Errors
18	Alarm silence time exceeded maximum
19	Invalid safety group verification table was detected
20	Backdoor Password could not be determined
21	Invalid safety group verification table was not
	accepted
22	CRC errors were found in application configuration
	data blocks
23	Backup Alert PCB was restored from active one
24	RESERVED
25	Lead Lag operation switch was turned OFF
26	Lead Lag operation switch was turned ON
27	Safety processor was reset
28	Application processor was reset
29	Burner switch was turned OFF
30	Burner switch was turned ON
31	Program Module (PM) was inserted into socket
32	Program Module (PM) was removed from socket
33	Alert PCB was configured
34	Parameter PCB was configured
35	Range PCB was configured
36	Program Module (PM) incompatible with product
	was inserted into socket

CODE	DESCRIPTION
37	Program Module application parameter revision
	differs from application processor
38	Program Module safety parameter revision differs
	from safety processor
39	PCB incompatible with product contained in
	Program Module
40	Parameter PCB in Program Module is too large for
	product
41	Range PCB in Program Module was too large for
	product
42	Alert PCB in Program Module was too large for
	product
43	IAS start check was forced on due to IAS enabled
	System Operation Faults
44	Low voltage was detected in safety processor
45	High line frequency occurred
46	Low line frequency occurred
47	Invalid subsystem reset request occurred
48	Write large enumerated Modbus register value
	was not allowed
49	Maximum cycle count was reached
50	Maximum hours count was reached
51	Illegal Modbus write was attempted
52	Modbus write attempt was rejected (NOT
	ALLOWED)
53	Illegal Modbus read was attempted
54	Safety processor brown-out reset occurred
55	Application processor watchdog reset occurred
56	Application processor brown-out reset occurred
57	Safety processor watchdog reset occurred
58	Alarm was reset by the user at the control
	Demand/Rate Command Faults
59	Burner control firing rate was > absolute max rate
60	Burner control firing rate was < absolute min rate
61	Burner control firing rate was invalid, % vs. RPM
62	Burner control was firing with no fan request
63	Burner control rate (nonfiring) was > absolute max
	rate
64	Burner control rate (nonfiring) was < absolute min
	rate
65	Burner control rate (nonfiring) was absent
66	Burner control rate (nonfiring) was invalid, %
	vs.RPM
67	Fan off cycle rate was invalid, % vs. RPM
68	Setpoint was overridden due to sensor fault
69	Modulation was overridden due to sensor fault
70	No demand source was set due to demand priority
	conflicts
71-73	RESERVED

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