Honeywell 7800 Series Product Data page 11

Selectable
Message/Display
Amp Type
Flame Response
Purge Time
Mfg Code
SW Rev.
Expanded Annunciator
Remote Command
a
Preignition Interlock Terminal 17 or 20 is model dependent.
Lockout Messages
When the 7800 SERIES is locked out, it displays a repeating
cycle of messages; see Table 4. There are four states in the
cycle:
1. STATE 1, see Fig. 11: First state message display lasts
six seconds. First line displays the word LOCKOUT
followed by the fault code number. The lockout reason
corresponding to the fault code number is displayed on
the second line.
2. STATE 2, see Fig. 12: Display of the second state
message lasts two seconds.
3. STATE 3, see Fig. 13: Display of the third state
message lasts three seconds. It is a replica of the
burner status as it existed at the time of lockout. The
second line will be blank if the burner status at the time
of lockout was one that did not include a pre-emptive
message for the second line.
4. STATE 4: In the fourth state, both lines are blanked for
one-half second, then sequences to the first state.
NOTE: For further explanation of Lockout Messages,
Troubleshooting and Checkout, refer to 7800
SERIES System Annunciation Diagnostics and
Troubleshooting, form 65-0118.
Fig. 11. Lockout message state 1.
Table 3. Selectable Messages (continued).
Description
Defines type of amplifier
installed.
Amplifier Flame Failure
Response Time (FFRT) in
seconds.
Timing value of purge card.
Manufacturing code is five digit
number representing date code.
Software revision and version
code for 7800 SERIES and
Keyboard Display Module.
Not Connected.
Status of firing rate command
from remote controller.
11
7800 SERIES S7800B DISPLAY MODULE
Possible States/
Range (Terminals)
STANDARD/AMP- Display shows type of flame
CHECK/SHUTTER detection system installed (i.e., as
STANDARD, AMP-CHECK/
AMPLI-CHECK™ and SHUTTER/
Dynamic Self-Checking).
.8s, 1s, 2s, or 3s
mm:ss Two seconds to 30 minutes.
nnnnn
nnnn/nnn
—
NONE/HOLD HF/LF
Fig. 12. Lockout message state 2.
Fig. 13. Lockout message state 3.
Comments
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65-0219—1