Honeywell DBC2000E10 Series Installation Instructions

ENI7003R8 KO65 2013
15
Table 8: Error condition and LED status
Sequence
Error condition
Indicator LED
status (*1)
All
Safety limits opened at any time (no voltage present at T18 (STD model) or
T19 (ENH/ULT model)
●○○○○○○◐
Standby (*2)
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
●○○○○○◐◐
Blower motor is energized
●◐○◐◐○○◐
Pre-purge
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.
●◐○○○○○◐
Flame signal is present.
●◐○○○○◐◐
Ignition Standby
Air flow switch goes OFF
●◐○○○○○◐
Flame signal is present
●◐○○○○◐◐
Pilot Ignition
Air flow switch goes OFF
●◐◐○○○○◐
Ignition failure (flame signal is not present after ignition-trial).
●○◐○○○○◐
Pilot only
Air flow switch goes OFF
●◐○◐○○○◐
No flame signal
●○○◐○○◐◐
Main ignition
Air flow switch goes OFF
●◐○○◐○○◐
No flame signal
●○○○◐○◐◐
Main ignition
Stabilization
Air flow switch goes OFF
●◐○○◐○○◐
No flame signal
●○○○◐○◐◐
Run
Air flow switch goes OFF
●◐○○○◐○◐
No flame signal
●○○○○◐◐◐
Post-purge
No power is supplied to Terminal 3 because of internal relay contact failure.
●◐○◐◐○○◐
Flame signal is present for more than 10 seconds after heat demand has ended.
●○○○○○◐◐
Air flow switch keeps ON more than 5 minutes after post-purge.
●◐○○○○○◐
All
1. Line voltage out of specs for more than 2 seconds
2. Line frequency out of range for more than 2 seconds
3. Excessive noise on power line or in the area
4. Internal device problem: CPU clock out of sync
●○○○○○○●
*1 : For LED indication, ○ means ‘off’, ● means ‘illuminated’, ◐ means ‘blinking’.
The LEDs are arranged in the following order: Standby, Purge, Ignition, Pilot, Main, Modulate, Flame and Alarm at the left
front side of the DBC2000.
*2 : If an error occurs during Standby, the DBC2000 will not lock-out but LEDs indicate the current error status.
In this case, the DBC2000 cannot start before the error is resolved.

Honeywell DBC2000E10 Series Specifications

General

Brand	Honeywell
Model	DBC2000E10 Series
Category	Controller
Language	English