7800 SERIES S7800A KEYBOARD DISPLAY MODULE
65-0090—4 14
SERVICE NOTE: If the Keyboard Display Module screen is
scrambled, remove and reinstall the Keyboard
Display Module and reset the 7800 SERIES Relay
Module.
SERVICE NOTE: Reset the 7800 SERIES Relay Module by
pressing the reset pushbutton on the relay module or
pressing a remote reset pushbutton wired through
the Keyboard Display Module, Data ControlBus™
Module or Remote Reset Module. A power-up reset
will cause an electrical reset of the 7800 SERIES
Relay Module but will not reset a lockout condition.
Lockout Messages
When the 7800 SERIES is locked out, it displays a repeating
cycle of messages. See Table 8. There are four states in the
cycle:
1. State 1 (Fig. 13). A first state message display lasts six
seconds. First line displays the word LOCKOUT fol-
lowed by the fault code number and possibly a lower
case letter if an Expanded Annunciator is connected.
The letter corresponds to the first-out code supplied by
the Expanded Annunciator. The lockout reason corre-
sponding to the fault code number is displayed on the
second line, highlighted by asterisks on each side.
Fig. 13. Lockout message, State 1.
2. State 2 (Fig. 14). Display of the second state message
lasts two seconds.
Fig. 14. Lockout message, State 2.
3. State 3 (Fig. 15). Display of the third state message
lasts three seconds. It is a replica of the burner status
as it existed at the time of the lockout. The second line
is blank if the burner status at the time of lockout did not
include a preemptive message (in parentheses) for the
second line.
Fig. 15. Lockout message, State 3.
Table 6. Accessing Historical and Diagnostic Selectable Messages.
Step Operation Press Display Comments
1. Press SCROLL key to access
Diagnostic Information.
(↕) STANDBY
↕Diagnostic Info>
Use the Down/Up SCROLL keys to access
the selectable message. The second line
will display Diagnostic Information.
2. Press Change Level key to
Access Diagnostic Information.
(↔) STANDBY
↕Diagnostic Info>
Use the Change Level key to access the
Diagnostic Information.
3. Continue display of Diagnostic
Information.
(↕) STANDBY ! DI
↕Device RM7800<
Push the (↕) SCROLL key to scroll to the
next Diagnostic Message.
4. Continue through remaining
Diagnostic Information display
following step 3 as required.
— — —
5. Press the Change Level key to
return to the first level of
Diagnostic Information data
prompt or to other selectable
messages.
(↔) STANDBY
↕Diagnostic Info>
Another display can be selected or
discontinue accessing Diagnostic
Information review.
M1991
LOCKOUT 23p
*Airflow Sw.*
SCROLL
MODE
SAVE
BURNER CONTROL
M1992
Condition at the
time of lockout ...
SCROLL
MODE
SAVE
BURNER CONTROL
M1993
PURGE
(Airflow Sw.)
SCROLL
MODE
SAVE
BURNER CONTROL
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
To Next Page
Loading...
