Trane TUD2B080A9V3VB User Manual

Since the manufacturer has a policy of continuous product and product data improvement, it reserves the
right to change design and specifications without notice.
Trane
6200 Troup Highway
Tyler, TX 75707
For more information contact
your local dealer (distributor)
Installer’s Guide
IFC ERROR FLASH CODES
Literature Order Number 18-CD31D1-3
File Number 18-CD31D1-3
Supersedes 18-DC31D1-2
Date 07/10
See Service Facts for additional troubleshooting
information.
GREEN LED AMBER LED RED LED ERROR
FLASH FLASH FLASH
1 Flame Sensed when no flame should be present
2 Pressure switch stuck closed
3 1st stage pressure switch is open / not closing
4 Open thermal limit or open rollout
5 Open low voltage fuse
6 1st stage pressure switch opened 5 times within one cycle--1 hour lockout
7 System lockout Retry
8 System lockout Recycle
9 Reverse polarity or poor grounding
10 Gas valve energized without call for heat
12 Ignitor relay failure internal in board. Replace IFC
Solid Gas valve relay failure internal in board. Replace IFC
3 Double 2nd stage pressure switch open; system reverts back to 1st stage heat
1 1st stage call for heat
2 2nd stage call for heat
3 W2 call present without W1
4 Y call present without G
Rapid Low flame sense current
1 Standby mode or call for cooling
* The diagnostics will indicate the specific fault through the following code:

Trane TUD2B080A9V3VB Specifications

General

Brand	Trane
Model	TUD2B080A9V3VB
Category	Furnace
Language	English