Product data

Automation and Control Solutions
Honeywell International Inc. Honeywell Limited-Honeywell Limitée
1985 Douglas Drive North 35 Dynamic Drive
Golden Valley, MN 55422 Scarborough, Ontario M1V 4Z9
customer.honeywell.com
® U.S. Registered Trademark
© 2005 Honeywell International Inc.
65-0288-1 M.S. Rev. 11-05
7800 SERIES Burner Control Fault History Records
Table 24 describes the registers that are part of a fault history
record. To determine the actual register address for a
parameter within the record, add the register offset to the start
address of the record.
226
FAULT 22j: HIGH OIL TEMP
EA
44
227
FAULT 22i: LOW OIL PRESSURE
EA
61
228
FAULT 22h: HIGH OIL PRESSURE
EA
43
229
FAULT 22g: BOTH FUELS SELECT
EA
21
230
FAULT 22f: FUEL SELECT OFF
EA
38
231
FAULT 22e: AUX LIMIT #3
EA
19
232
FAULT 22d: HIGH LIMIT
EA
42
233
FAULT 22c: LWCO
EA
63
234
FAULT 22b: AUX LIMIT #2
EA
18
235
FAULT 22a: AUX LIMIT #1
EA
17
236
FAULT 21s: OTHER INTERLOCKS
EA
74
237
FAULT 21r: AUX INTERLOCK #5
EA
16
238
FAULT 21q: AUX INTERLOCK #4
EA
15
239
FAULT 21p: AIRFLOW SWITCH
EA
13
240
FAULT 21o: LOW GAS PRESSURE
EA
59
241
FAULT 21n: HIGH GAS PRESSURE
EA
41
242
FAULT 21m: ATOMIZING SW
EA
14
243
FAULT 21k: LOW OIL TEMP
EA
62
244
FAULT 21j: HIGH OIL TEMP
EA
44
245
FAULT 21i: LOW OIL PRESSURE
EA
61
246
FAULT 21h: HIGH OIL PRESSURE
EA
43
247
FAULT 21g: BOTH FUELS SELECT
EA
21
Table 23. 7800 SERIES Fault Codes. (Continued)
Fault
Code
(Reg
40001)
Fault Message
(NOTE: FAULT n: is not in
the Fault and Strings Code)
Fault
String
Code
(Table 22)
248
FAULT 21f: FUEL SELECT OFF
EA
38
249
FAULT 21e: AUX LIMIT #3
EA
19
250
FAULT 21d: HIGH LIMIT
EA
42
251
FAULT 21c: LWCO
EA
63
252
FAULT 21b: AUX LIMIT #2
EA
18
253
FAULT 21a: AUX LIMIT #1
EA
17
254
FAULT 10z: OTHER PREIGN ILK
EA
75
255
FAULT 10y: VALVE CLOSURE
EA
109
Table 24. Fault History Record Format.
Offset Parameter Name Access Format Notes
0 Fault code R U16 See Table 23.
1 Fault String R U16 See Table 22.
2 Sequence State R U16 See Table 21.
3 First line message R U16 See Table 22.
4 Second line
message
R U16 See Table 22.
5 Sequence time R U16 Seconds.
6-7 Total cycles R U32
8-9 Total hours R U32
Table 23. 7800 SERIES Fault Codes. (Continued)
Fault
Code
(Reg
40001)
Fault Message
(NOTE: FAULT n: is not in
the Fault and Strings Code)
Fault
String
Code
(Table 22)