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Fault
Code
(Reg
40001)
Fault Message
(NOTE: FAULT n: is not in
the Fault and Strings Code)
Fault
String
Code
(Table
21)
231
FAULT 22e: AUX LIMIT #3EA
19
232
FAULT 22d: HIGH LIMITEA
42
233
FAULT 22c: LWCOEA
63
234
FAULT 22b: AUX LIMIT #2EA
18
235
FAULT 22a: AUX LIMIT #1EA
17
236
FAULT 21s: OTHER INTERLOCK-
SEA
74
237
FAULT 21r: AUX INTERLOCK
#5EA
16
238
FAULT 21q: AUX INTERLOCK
#4EA
15
239
FAULT 21p: AIRFLOW SWITCHEA
13
240
FAULT 21o: LOW GAS PRESSU-
REEA
59
241
FAULT 21n: HIGH GAS PRESSU-
REEA
41
242
FAULT 21m: ATOMIZING SWEA
14
243
FAULT 21k: LOW OIL TEMPEA
62
244
FAULT 21j: HIGH OIL TEMPEA
44
245
FAULT 21i: LOW OIL PRESSU-
REEA
61
246
FAULT 21h: HIGH OIL PRESSU-
REEA
43
247
FAULT 21g: BOTH FUELS SE-
LECTEA
21
248
FAULT 21f: FUEL SELECT OFFEA
38
249
FAULT 21e: AUX LIMIT #3EA
19
250
FAULT 21d: HIGH LIMITEA
42
251
FAULT 21c: LWCOEA
63
252
FAULT 21b: AUX LIMIT #2EA
18
Fault
Code
(Reg
40001)
Fault Message
(NOTE: FAULT n: is not in
the Fault and Strings Code)
Fault
String
Code
(Table
21)
253
FAULT 21a: AUX LIMIT #1EA
17
254 FAULT 10z: OTHER PREIGN ILKEA 75
255
FAULT 10y: VALVE CLOSUREEA
109
Table 22. 7800 SERIES Fault Codes.
7800 SERIES Burner Control Fault
History Records
Table 23 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.
Off-
set
Parameter
Name
Ac-
cess
For-
mat
Notes
0
Fault code
R
U16
See Table
22.
1
Fault String
R
U16
See Table
21.
2
Sequence
State
R
U16
See Table
20.
3
First line mes-
sage
R
U16
See Table
21.
4
Second line
message
R
U16
See Table
21.
5
Sequence
time
R
U16 Seconds.
6-7
Total cycles
R
U32
8-9
Total hours
R
U32
Table 23. Fault History Record Format.