Honeywell 7800 Series Product Data page 9

Historical Information Index
The S7800B displays historical information for the six most
recent lockouts. Each of the six lockout records retain the
cycle when the fault occurred, the hour of operation when the
fault occurred, a fault code, a fault message, and burner
status when the fault occurred, see Table 3.
SERVICE NOTE: If the S7800B Display LCD is scrambled,
remove and reinstall the S7800A Module
or S7810A Module and reset the 7800
SERIES Relay Module.
Step Operation
1. Press SCROLL key to access Diagnostic
Information.
2. Press Change Level key to Access
Diagnostic Information.
3. Continue display of Diagnostic
Information.
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.
NOTE: Historical files may be selected similarly.
Selectable
Message/Display
Flame Signal
Total Cycles
Total Hours
Fault History >
(Six most recent faults)
Fault Cycle
Fault Hours
Fault Code
Fault Message
Sequence Message
(Second Line Message)
Table 2. Accessing Historical and Diagnostic Selectable Messages.
Press
( )
(↔)
( )
—
(↔)
Table 3. Selectable Messages (See Table 1).
Description
Flame signal strength.
Total number of equipment
operating cycles.
Total number of equipment
operating hours.
First level prompt for history
information. Has subset level.
H1 Cycle when fault occurred.
H1 Run hour when fault occurred.
H1 Number that identifies the
reason for lockout.
H1 Indicates cause of lockout.
H1 Indicates where in the
sequence the lockout occurred.
H1 Second line message explains
any further information that is
available from the 7800
SERIES or may be blank if
there is not a preemptive
second-line. H2...H6 etc.
7800 SERIES S7800B DISPLAY MODULE
SERVICE NOTE: Reset the 7800 SERIES Relay Module by
pressing the reset pushbutton on the 7800
SERIES Relay Module, or pressing a
remote reset pushbutton wired through
the S7800A Keyboard Display Module,
Data ControlBus Module™ or S7820
Remote Reset Module. A power-up reset
causes an electrical reset of the 7800
SERIES Relay Module but does not reset
a lockout condition.
Display
STANDBY Use the Down/Up SCROLL keys to access
Diagnostic Info> the selectable message. The second line will
display Diagnostic Information.
STANDBY Use the Change Level key to access the
Diagnostic Info> Diagnostic Information.
STANDBY DI Push the ( ) SCROLL key to scroll to the
Device EC78XX<
next Diagnostic Message.
—
STANDBY Another display can be selected or
Diagnostic Info> discontinue accessing Diagnostic
Information review.
Possible States/
Range (Terminals)
0 - 5.0 Vdc Flame Amp
(+ and - (Com))
0 - 99,999
(250,000) cycles
0 - 99,999
(250,000) hours
—
0 - 99,999 cycles
(250,000) cycles
0 - 99,999
(250,000) hours
0 - 999
—
—
—
9
Comments
—
Comments
Flame relay pull-in and drop-out
value 1.25 Vdc.
Cycle will be updated each time
main valve is energized.
Hour will be updated each time
main valve output is energized for
60 minutes.
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(continued)
65-0219—1