Alert Code Recovery - Trane UHMB060ACV3VB Installer's Manual

Installer's Guide

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 be-
tween 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 oper-
ate as shown in the table and the Red LED will flash (one
flash) every 20 seconds.
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.
Line voltage con-
nections
"Com" LED
(Amber)
Bitmaster (BM)
LED (Green)
24V furnace com-
ponent connec-
tions
Low voltage
terminal board
5 Amp control
fuse
BK jumper
54
Table 23
LED
GREEN
RED
GREEN
(BM)
AMBER
P
IFC BOARD
18-CD30D1-12
DESCRIPTION FUNCTION
FAST FLASH - CALL
FOR HEAT
STATUS LED
SLOW FLASH - NO
CALL FOR HEAT
NO. OF FLASHES
ALERT LED - SEE DIAGNOSTIC
CODES
ON SOLID WHEN UNIT
BITMASTER
POWERED
FLASHES DEVICE
COM
COUNT
Neutral con-
nections
Motor bus
connections
Motor bus
connections
User Interface
connection
Status LED
(Green)
Personality
module con-
nection
Fault LED
(Red)