Cleaver-Brooks CB780 - Sequence Status Display Information

1-20 750-166
CB780/CB784
OPERATION
message will replace a selectable message to support the
sequence status information. It will also replace a selectable
message after 60 seconds if it or a lockout message is
available. The CB780/CB784 LEDs provide positive visual
indication of the program sequence: POWER, PILOT,
FLAME, MAIN and ALARM.
TABLE 4—SEQUENCE STATUS DISPLAY INFORMATION (See Fig. 19).
NOTE: Normal sequences are in BOLD TYPE, while abnormal sequences are not in bold type.
Burner Sequence LEDs Energized
INITIATE minutes:seconds
↕selectable—message
POWER, PILOT, FLAME, MAIN AND ALARM
INITIATE HOLD: AC
(AC Freq/Noise)
POWER, PILOT, FLAME, MAIN AND ALARM
INITIATE HOLD: AC
(AC Line Dropout)
POWER, PILOT, FLAME, MAIN AND ALARM
INITIATE HOLD: AC
(AC Frequency)
POWER, PILOT, FLAME, MAIN AND ALARM
INITIATE HOLD: AC
(Low Line Voltage)
POWER, PILOT, FLAME, MAIN AND ALARM
STANDBY
↕selectable —message
POWER, PILOT, FLAME, MAIN AND ALARM
STANDBY HOLD: REM
(Remote Control)
POWER, PILOT, FLAME, MAIN AND ALARM
STANDBY HOLD: F/G
(Flame Detected)
POWER, PILOT, FLAME, MAIN AND ALARM
STANDBY HOLD: T20
(Preignition ILK)
POWER, PILOT, FLAME, MAIN AND ALARM
STANDBY HOLD: T7
(Running ILK)
POWER, PILOT, FLAME, MAIN AND ALARM
STANDBY HOLD: T7
(Lockout ILK)
POWER, PILOT, FLAME, MAIN AND ALARM
PURGE HOLD: T19
(High Fire Switch)
POWER, PILOT, FLAME, MAIN AND ALARM
PURGE DELAY: T19
(High Fire Jumprd)
POWER, PILOT, FLAME, MAIN AND ALARM
PURGE HOLD: TEST
(Run/Test Switch)
POWER, PILOT, FLAME, MAIN AND ALARM
PURGE DELAY: T18
(Low Fire Jumprd)
POWER, PILOT, FLAME, MAIN AND ALARM
PURGE HOLD: F/G
(Flame Detected)
POWER, PILOT, FLAME, MAIN AND ALARM
PURGE HOLD: T18
(Low Fire Switch)
POWER, PILOT, FLAME, MAIN AND ALARM
PURGE minutes:seconds
↕selectable—message
POWER, PILOT, FLAME, MAIN AND ALARM
PURGE HOLD: T7
(Running ILK)
POWER, PILOT, FLAME, MAIN AND ALARM
PILOT IGN minutes:seconds
↕selectable—message
POWER, PILOT, FLAME, MAIN AND ALARM
PILOT HOLD: TEST
(Run/Test Switch)
POWER, PILOT, FLAME, MAIN AND ALARM
MAIN IGN minutes:seconds
↕selectable—message
POWER, PILOT, FLAME, MAIN AND ALARM
RUN
↕selectable—message
POWER, PILOT, FLAME, MAIN AND ALARM
RUN
↕selectable—message
POWER, PILOT, FLAME, MAIN AND ALARM
RUN LOWFIRE: TEST
(Run/Test Switch)
POWER, PILOT, FLAME, MAIN AND ALARM
(continued)