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Table 15. 7800 SERIES Sequence State Codes
and Associated register code values. (Continued)
7800 SERIES
cb_sqst
Sequence
Value
State
6
STANDBY
7
STANDBY HOLD:
REM
REMOTE
CONTROL
8
STANDBY HOLD:
START SWITCH
9
STANDBY HOLD:
F/G
FLAME
DETECTED
10
STANDBY HOLD:
T20
PREIGNITION
LOCK
11
STANDBY HOLD:
T7
RUNNING
INTERLOCK
12
STANDBY HOLD:
T7
LOCKOUT
INTERLOCK
13
STANDBY HOLD:
AIRFLOW
SWITCH
14
PURGE HOLD:
T19
HIGH FIRE
SWITCH
15
PURGE DELAY:
T19
HIGH FIRE
JUMPRD
16
PURGE HOLD:
TEST
RUN/TEST
SWITCH
17
PURGE DELAY:
T18
LOW FIRE
JUMPRD
18
PURGE HOLD: F/
G
FLAME
DETECTED
19
PURGE
20
PURGE HOLD:
T18
LOW FIRE
SWITCH
21
PURGE HOLD: T7
RUNNING
INTERLOCK
22
PURGE HOLD:
LOCKOUT
INTERLOCK
23
PURGE HOLD:
AIRFLOW
SWITCH
24
PURGE HOLD:
START SWITCH
25
PILOT IGN
String Code
Uses
Control
Line 1
Line 2
mm:ss
State Bits
103
0
0002h
104
94
4002h
104
106
4002h
104
35
4002h
104
86
4002h
104
101
4002h
104
55
4002h
104
13
4002h
93
40
4004h
89
39
4004h
93
98
4004h
89
56
4004h
93
35
4004h
87
0
!
0004h
93
58
4004h
93
101
4004h
93
54
4004h
93
13
4004h
93
106
4004h
78
0
!
0008h
Table 15. 7800 SERIES Sequence State Codes
and Associated register code values. (Continued)
Burner
7800 SERIES
cb_sqst
Sequence
Value
26
PILOT HOLD:
TEST
RUN/TEST
SWITCH
27
PILOT HOLD:
START SWITCH
28
MAIN IGN
29
MAIN IG HOLD:
MANUAL-OPEN
SWITCH
30
RUN
31
RUN PV HOLD:
LOW FIRE
SWITCH
32
PVHOLD IGN
33
PV HOLD:
PV HOLD
SWITCH
34
RUN/LOWFIRE:
TEST
RUN/TEST
SWITCH
35
POSTPURGE
36
STATE 36
37
RESET/ALARM
TEST
38
SAFE START
CHECK
39
SAFETY1-1
40
SAFETY1-2
41
SAFETY1-3
42
SAFETY1-4
43
SAFETY1-5
44
Blank
45
PREIGNITION
46
SAFETY 1
47
PILOT STAB.
48
MAIN TRIAL
49
MAIN TRIAL
50
STANDBY
HOLD:TEST
RUN/TEST
SWITCH
51
STATE 51
52
STATE 52
53
SAFETY 1: TEST
RUN/TEST
SWITCH
54
STATE 54
55
STANDBY HOLD:
PURGE FAN
SWITCH
56
STATE 56
57
PURGE HOLD:
PURGE FAN
SWITCH
58
STATE 58
11
S7810M MODBUS™ MODULE
String Code
State
Line 1
Line 2
77
98
77
106
66
0
67
72
95
0
96
58
96
66
96
45
97
98
83
0
31
0
111
0
102
105
102
2
102
3
102
4
102
5
102
6
0
0
84
0
102
1
79
0
68
0
68
0
104
98
31
0
31
0
102
98
31
0
104
92
31
0
93
92
31
0
Burner
Uses
Control
mm:ss
State Bits
4008h
4008h
!
0010h
4010h
0020h
4020h
!
4020h
4020h
4020h
!
0040h
A000h
6000h
4020h
!
4020h
!
4020h
!
4020h
!
4020h
!
4020h
2000h
!
0080h
!
4020h
4080h
!
4080h
4080h
4002h
A000h
A000h
4020h
A000h
4002h
A000h
4004h
A000h
65-0249—4
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