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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
46
SAFETY 1
47
PILOT STAB.
48
MAIN TRIAL
49
MAIN TRIAL
50
STANDBY HOLD:
RUN/TEST
SWITCH
51
STATE 51
52
STATE 52
53
SAFETY 1:
RUN/TEST
SWITCH
54
STATE 54
55
STANDBY HOLD:
PURGE FAN
SWITCH
56
STATE 56
57
PURGE HOLD:
PURGE FAN
SWITCH
58
STANDBY HOLD
FLAME DETECTED
59
STANDBY HOLD
COMB. PRESSURE
60
VP START
61
VP MV2 ON
62
VP LOW DLY
63
VP LOW TST
64
VP MV1 ON
65
VP HIGH DLY
66
VP HIGH TST
67
INITIATE HOLD: AC
AC PHASE ERROR
68
STANDBY HOLD:
PRE-IGNITION ILK
69
SETUP NEEDED
70
STATE 70
71
BURNER OFF: T6
BURNER SWITCH
72
STANDBY HOLD:
(EA) HOLD MSG
73
STANDBY HOLD:
(EA) CIRCUIT
FAULT
74
STANDBY HOLD
(EA)
75
PURGE HOLD (EA) 185
76
UNUSED
77
UNUSED
78
UNUSED
65-0090-6
String Code
Burner
Control
Line
Line
Uses
State
Bits
1
2
mm:ss
102
1
0008h
79
0
0008h
68
0
0010h
68
0
0010h
104
98
4002h
31
0
A000h
31
0
A000h
102
98
4008h
31
0
A000h
104
92
4002h
31
0
A000h
93
92
4004h
104
35
4002h
104
26
4002h
210
0
4100h
211
0
4100h
212
0
4100h
213
0
4100h
214
0
4100h
215
0
4100h
216
0
4100h
49
10
4001h
104
85
4002h
217
0
A000h
31
0
A000h
22
23
4002h
184
30
4002h
184
25
4002h
184
Varies
4002h
Varies
4004h
0
0h
0
0h
0
0h
Table 20. 7800 SERlES Sequence State Codes
and Associated register code values. (Continued)
7800 SERlES
Register
Sequence
40003
State
79
UNUSED
80
UNUSED
81
STANDBY HOLD
(EA): VALVE
CLOSURE
82
STANDBY HOLD
(EA) OTHER PII
7800 SERIES String Codes
Table 21 contains a listing of all string codes provided by the
S7800. The associated string is not implemented in the S7800;
it is a string equivalent to that displayed on the S7800
Keyboard Display Module or similar device.
Table 21. 7800 SERlES String codes.
String Code
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
38
String Code
Line
Line
Uses
1
2
mm:ss
0
0
184
109
184
75
String
(blank)
1
1-1
1-2
1-3
1-4
1-5
AC FREQUENCY
AC Frequency/Noise
AC LINE DROPOUT
AC PHASE
ACCESSORY FAULT
AIRFLOW SW. ON
AIRFLOW SWITCH
ATOMIZING SW
AUX INTERLOCK #4
AUX INTERLOCK #5
AUX LIMIT #1
AUX LIMIT #2
AUX LIMIT #3
BLOCK INTAKE
BOTH FUELS SELECT
BURNER OFF
BURNER SWITCH
CALL SERVICE
CIRCUIT FAULT
COMB. PRESSURE
CONTROL ON
DELAYED MV ON
DEVICE SPECIFIC
Burner
Control
State
Bits
0h
0h
4002h
4002h
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