Honeywell 7800 Series Product Data page 15

Fig. 20. Fault history record
The fault record is scrollable using the up and down arrow buttons to see all lines of the
information. The fault description can take 1 or 2 lines to display and is presented on the
line(s) below the fault code line. Below the sequence time line is displayed the sequence
state that the burner control was in at the time of the fault. This state description may take
1 or 2 lines to display also.
The left arrow button can be pressed to exit this fault record and go back to the Fault
history menu (previous page).
The title bar displays which fault history record is displayed and indicates that the
Troubleshooting guide can be navigated to using the "Next page" (right arrow) button (see
Fig. 21).
Fig. 21. Troubleshooting guide from fault history record
When the "Exit" command in the troubleshooting guide has input focus and the OK button
is pressed control returns back to the fault history record.
Step Operation
Press hi buttons to access
1.
Diagnostic Information.
Press u button to access Diag-
2.
nostic Information.
Continue display of Diagnostic
3.
Information.
Continue through remaining
4. diagnostic information display
following step 3 as required.
Press the t arrow button to
5.
return to the Home page
Table 4. Accessing Historical and Diagnostic Selectable Messages.
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 push button
on the relay module or pressing a remote reset push button 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, a standard lockout message is displayed unless the
Call for Service feature is enabled. When the Call for Service feature is enabled a custom
lockout message is displayed instead. The standard lockout message (see Fig. 22) is
automatically displayed when the lockout initially occurs unless the user happens to be
7800 SERIESS7800A2142 4-Line LCD Keyboard Display Module
GO TO
TROUBLE
SHOOTING
GUIDE
Press Display
STANDBY Diagnos-
hi
tic Information>
STANDBY Diagnos-
t u
tic Information>
hi Device RM7800<
— —
STANDBY Diagnos-
t u
tic Information>
15
Comments
Use the Down/Up arrow
buttons to access the "Di-
agnostic information" line.
Use the right arrow or OK
button to access the Diag-
nostic Information.
Push the Down/Up arrow
buttons to scroll through
the burner control diagnos-
tic status.
—
Another display can be
selected or discontinue
accessing Diagnostic Infor-
mation review.
32-00110-07