Honeywell DBC2000 Series Product Handbook

ENS7003R0 KO06 2010
Air flow SW OFF
PostPurge
Lockout
Error Confirmation
20 SEC
BLOWER
IGNITION TR
PILOT VALVE
MAIN VALVE
ALARM
HIGH
LOW
DAMPER
AIR FLOW SW
FLAME SIGNAL
POWER
PRE/POST-PURGE
IGNITION TRIAL
PILOT ONLY
M-TRI/M-STA
RUN
FLAME
ALARM
I
N
D
I
C
A
T
I
O
N
L
O
A
D
Fig. 13: When air flow switch goes OFF during Pilot stabilization
Table 5: Error condition and LED status
Sequence
Error condition
Indicator LED status
*1
Air flow switch remains ON (closed) for
more than 5 minutes, or
START position interlock switch remains OFF(opened) for
more
than 5 minutes.
●◐○○○○○◐
Flame signal is present
●○○○○○◐◐
Standby *2
Blower motor is energized
●○○◐◐○○◐
Air flow switch remains OFF for more than 5 minutes. after the
heat
demand has started.
●◐○○○○○◐
PURGE position interlock switch remains OFF for more than 5
minutes. after the heat demand started.
●◐◐◐○○○◐
Both PURGE and START position interlocks ON at the same time
during prepurge period
●◐◐◐○○○◐
START position interlock remains OFF more than 5 minutes. after
pre-purge has finished
●◐◐◐○○○◐
Air flow switch goes ON within 5 minutes. after the heat demand
started, but air flow switch goes OFF again.
●◐○○○○○◐
Pre-purge
Flame signal is present.
●◐○○○○◐◐
Ignition Standby Air flow switch goes OFF
●◐○○○○○◐

Honeywell DBC2000 Series Specifications

General

Brand	Honeywell
Model	DBC2000 Series
Category	Controller
Language	English