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S7810M MODBUS™ MODULE
Table 17. 7800 SERIES Fault Codes. (Continued)
Fault Message
Fault Code
(NOTE: FAULT n: is not in
(Reg 40001)
the Fault and Strings Code)
207
FAULT 23k: LOW OIL TEMP
208
FAULT 23j: HIGH OIL TEMP
209
FAULT 23i LOW OIL PRESSURE
210
FAULT 23h: HIGH OIL PRESSURE
211
FAULT 23g: BOTH FUELS SELECT
212
FAULT 23f: FUEL SELECT OFF
213
FAULT 23e: AUX LIMIT #3
214
FAULT 23d: HIGH LIMIT
215
FAULT 23c: LWCO
216
FAULT 23b: AUX LIMIT #2
217
FAULT 23a: AUX LIMIT #1
218
FAULT 22s: OTHER INTERLOCKS
219
FAULT 22r: AUX INTERLOCK #5
220
FAULT 22q: AUX INTERLOCK #4
221
FAULT 22p: AIRFLOW SWITCH
222
FAULT 22o: LOW GAS PRESSURE
223
FAULT 22n: HIGH GAS PRESSURE
224
FAULT 22m: ATOMIZING SW
225
FAULT 22k: LOW OIL TEMP
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
65-0249—4
Fault String
Code
(Table 16)
62
EA
44
EA
EA
61
EA
43
21
EA
38
EA
19
EA
42
EA
63
EA
EA
18
EA
17
74
EA
16
EA
15
EA
13
EA
59
EA
EA
41
EA
14
EA
62
44
EA
61
EA
43
EA
21
EA
38
EA
EA
19
EA
42
63
EA
18
EA
17
EA
74
EA
EA
16
EA
15
13
EA
59
EA
41
EA
14
EA
62
EA
EA
44
EA
61
EA
43
21
EA
Table 17. 7800 SERIES Fault Codes. (Continued)
Fault Code
(NOTE: FAULT n: is not in
(Reg 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 18 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 18. Fault History Record Format.
Offset
Parameter Name
0
Fault code
1
Fault String
2
Sequence State
3
First line message
4
Second line message R
5
Sequence time
6-7
Total cycles
8-9
Total hours
Expanded Annunciator
The codes shown in Table 19 are available in the Expanded
Annunciator First Out Code Register. These codes are normally
translated to the appropriate fault code by the Burner Control. The
fault code will then be translated to the appropriate first and second
line messages as shown in Table 17 for use by the UMC800 Operator
Interface.
Table 19. Expanded Annunciator First Out Code.
EA Status Value
(binary)
0xx 00000
No Expanded Annunciator N/A
0xx 00001
Burner Sw.
0xx 00010
Operating Control
0xx 00011
Aux. Limit #1
0xx 00100
Aux. Limit #2
0xx 00101
LWCO
0xx 00110
High Limit
0xx 00111
Aux. Limit #3
0xx 01000
FuelSelect Off
0xx 01001
BothFuelSelect
0xx 01010
High Oil Pres.
0xx 01011
Low Oil Pres.
0xx 01100
High Oil Temp
0xx 01101
Low Oil Temp.
0xx 01110
Atomizing Sw.
16
Fault Message
EA
EA
EA
EA
EA
EA
EA
EA
Access
Format
R
U16
See Table 17.
R
U16
See Table 16.
R
U16
See Table 15.
R
U16
See Table16.
U16
See Table 16.
R
U16
Seconds.
R
U32
R
U32
Line 2 String Code
Status Message
(Table 16)
23
72
17
18
63
42
19
38
21
43
61
44
62
14
Fault String
Code
(Table 16)
38
19
42
63
18
17
75
109
.
Notes
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