Honeywell S7800A Installation Manual page 37

7800 SERIES Sequence State Codes
Sequence state codes are provided by the Burner Control.
Each code is translated into two string codes for displaying an
associated message in two lines. Each code is also translated
into burner control state bits which may be used to generate
and control system diagrams on an operator interface. The
codes can also be retrieved from registers 40004, 40005, and
40013.
The Sequence State Codes shown in Table 20 are valid only if
the Fault Code has a value of zero. If the Fault Code is non-
zero, the sequence state field contains the sequence state
code when the lockout occurred.
Table 20. 7800 SERlES Sequence State Codes
and Associated register code values.
7800 SERlES
Register Sequence
40003 State
Fault LOCKOUT
code not
zero
0 UNUSED HISTORY 0
1 INITIATE
2 INITIATE HOLD: AC
FREQUENCY/
NOISE
3 INITIATE HOLD:
AC LINE DROPOUT
4
INITIATE HOLD:
AC FREQUENCY
5 INITIATE HOLD:
LOW LINE
VOLTAGE
6 STANDBY
7
STANDBY HOLD:
REM
REMOTE CONTROL
8 STANDBY HOLD:
START SWITCH
9 STANDBY HOLD: F/G
FLAME DETECTED
10 STANDBY HOLD:
T20
PRE-IGNITION
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
String Code Burner
Control
Line Line Uses State
1 2 mm:ss Bits
52 Table 8000h
16
0 0000h
48 0 0001h
49 8 4001h
49 9 4001h
49 7 4001h
49 60 4001h
103 0 0002h
104 94 4002h
104 106 4002h
104 35 4002h
104 86 4002h
104 101 4002h
104 54 4002h
104 13 4002h
93 40 4004h
89 39 4004h
7800 SERIES S7800A KEYBOARD DISPLAY MODULE
Table 20. 7800 SERlES Sequence State Codes
and Associated register code values. (Continued)
7800 SERlES
Register Sequence
40003 State
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
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 UNKNOWN 31
37
RESET/ALARM
TEST
38 SAFETY START
39 SAFETY1-1
40 SAFETY1-2
41 SAFETY1-3
42 SAFETY1-4
43 SAFETY1-5
44 Blank
45 PRE-IGNITION
37
String Code Burner
Control
Line Line Uses State
Bits
1 2 mm:ss
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
77 98 4008h
77 106 4008h
66 0 0010h
67 72 4010h
95 0 0020h
96 58 4020h
77 46 4008h
77 45 4008h
97 98 4020h
83 0 0040h
0 0000h
111 0 6000h
102 105 4002h
102 2 0008h
102 3 0008h
102 4 0008h
102 5 0008h
102 6 0008h
0 0 A000h
84 0 0008h
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