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