Honeywell 7800 Series Manual page 20

RM7823A
TROUBLESHOOTING
TABLE 6—SEQUENCE AND STATUS HOLD INFORMATION (Continued)
Sequence
NOTE: Normal sequences are in bold type, while abnormal sequences are not in bold type.
INITIATE HOLD: (AC Line Dropout)
INITIATE HOLD: (AC Frequency)
INITIATE HOLD: (Low Line Voltage)
RESET/ALARM TEST
Home and Building Control
Honeywell Inc.
1985 Douglas Drive North
Golden Valley, Minnesota 55422
65-0106—2
Printed in U.S.A.
Information
The LED indicates the system status, POWER, and that AC Line power
has momentarily dropped out. The RM7823A sequence will return to
STANDBY until the AC Line voltage has stabilized throughout the
INITIATE sequence.
The LED indicates the system status, POWER, and that line frequency
is faster than the expected value. The RM7823A sequence will not
advance into RUN until the line frequency returns to the proper value
(perhaps caused by using a 60 Hz device on a 50 Hz line).
The LED indicates the system status, POWER, and that low line
voltage has occurred. The RM7823A sequence will not advance into
RUN until the line voltage is at a sufficient level for proper operating
parameters.
The LED indicates the burner status, POWER and ALARM. This
condition indicates that the reset pushbutton is pressed.
Home and Building Control
Honeywell Limited—Honeywell Limitée
740 Ellesmere Road
Scarborough, Ontario
M1P 2V9
20
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