34
18-CD32D1-3
Installer’s Guide
BK Jumper
ALERT CODE RECOVERY
On power up, last 4 Alerts, if any, will be flashed on
the Red Alert LED. The newest Alert detected will
flash first and the oldest last. There will be a 2 second
delay between Alert Code flashes. Solid Red LED error
codes will not be displayed.
The Green BM LED will be on solid when the control
is powered. The Green status LED indicator light will
operate as shown in the table. The Red LED will only
flash when a fault is present.
NOTE:
Use the flash code menu for detail of the alerts. Alert
codes also are displayed on the User Interface menu
using a descriptive text message and on the comfort
control display using an alert code number. A com-
plete list of the alert codes is included with the comfort
control.
Table 21
LED
DESCRIPTION
FUNCTION
GREEN
STATUS LED
FAST FLASH - CALL
FOR HEAT
SLOW FLASH - NO
CALL FOR HEAT
RED
ALERT LED
NO. OF FLASHES
- SEE DIAGNOSTIC
CODES
GREEN
(BM)
BITMASTER
ON SOLID WHEN UNIT
POWERED
AMBER
COM
FLASHES DEVICE
COUNT
O
IFC BOARD
Line voltage
connections
"Com" LED
(Amber)
Bitmaster (BM)
LED (Green)
24V furnace
component
connections
Low voltage
Terminal board
Neutral
connections
Motor bus
connections
User interface
connection
Status LED
(Green)
Personality module
connection
Fault LED
(Red)
5 Amp control
fuse
BK Jumper
