Honeywell 7800 Series Product Data page 61

String Code String
160 Terminal T8 = 0
161 Terminal T8 = 1
162 Terminal T9 = 0
163 Terminal T9 = 1
164 Terminal T10 = 0
165 Terminal T10 = 1
166 Terminal T16 = 0
167 Terminal T16 = 1
168 Terminal T17 = 0
169 Terminal T17 = 1
170 Terminal T18 = 0
171 Terminal T18 = 1
172 Terminal T19 = 0
173 Terminal T19 = 1
174 Terminal T20 = 0
175 Terminal T20 = 1
176 Terminal T21 = 0
177 Terminal T21 = 1
178 Jumper 1 Intact
179 Jumper 1 Clipped
180 Jumper 2 Intact
181 Jumper 2 Clipped
182 Jumper 3 Intact
183 Jumper 3 Clipped)
The values that follow are generated when the
fault code is zero and the Expanded Annunciator
code indicates that one or more switches are
open. The Line 2 string code will indicate which
switch is open.
184 STANDBY HOLD (EA)
185 PURGE HOLD (EA)
186 PILOT HOLD (EA)
187 MAIN IG HOLD (EA)
188 RUN HOLD (EA)
189 POSTPURGE HOLD (EA)
190 PRE-IGNITION HOLD (EA)
191 -SKIPPED-
192 DEMAND T6 = 0
193 DEMAND T6 = 1
194 PILOT VALVE T8 = 0
195 PILOT VALVE T8 = 1
196 INTERMIT PV T8 = 0
197 INTERMIT PV T8 = 1
198 MAIN VALVE1 T9 = 0
199 MAIN VALVE1 T9 = 1
200 VP SWITCH T16 = 0
7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module
String Code
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
Table 21. Table 21. 7800 SERIES String codes.
7800 SERIES Fault Codes
Table 22 is a complete list of fault codes
that may appear in the fault code register.
The Fault String Code register will contain
the corresponding String code identified in
the table.
Fault
Code
(Reg
40001)
0
1
2
3
4
5
6
7
8
9
10
11
12
61
String
VP SWITCH T16 = 1
MAIN VALVE2 T17 = 0
MAIN VALVE2 T17 = 1
INTRUPTD PV T21 = 0
INTRUPTD PV T21 = 1
DELAYED MV T21 = 0
DELAYED MV T21 = 1
START SW T21 = 0
START SW T21 = 1
VP START
VP MV2 ON
VP LOW DLY
VP LOW TST
VP MV1 ON
VP HIGH DLY
VP HIGH TST
VP SETUP NEEDED
MAIN VALVE 1 OFF
MAIN VALVE 2 OFF
MAIN VALVE 1 ON
MAIN VALVE 2 ON
VPS OFF
VPS ON
Fault Message
(NOTE: FAULT n: is not in
the Fault and Strings Code)
Blank (no fault)
FAULT 1: NO PURGE CARD
FAULT 2: AC FREQUENY/NOISE
FAULT 3: AC LINE DROPOUT
FAULT 4: AC FREQUENCY
FAULT 5: LOW LINE VOLTAGE
FAULT 6: PURGE CARD ERROR
FAULT 7: FLAME AMPLIFIER
FAULT 8: FLAME AMP/SHUTR
FAULT 9: FLAME DETECTED
FAULT 10: PRE-IGNITION ILK
FAULT 11: RUNNING ILK ON
FAULT 12: LOCKOUT ILK ON
Fault
String
Code
(Table
21)
0
73
8
9
7
60
88
34
33
35
85
100
53
32-00110-07