Trane TUHMD120ACV5VA - 9 Flash Fault LED; Inducer Limit Troubleshooting

50 UHM-DHM-SF-1H
Service Facts
DEFINITION:
This error is normally caused by
improper installation or application of
the venting system.
Scroll through
User Interface to
View number 1 of
Last 4 Faults
9 Flash Fault LED
User Interface
shows IND
LIMIT?
Disconnect
electrical power
from unit & remove
wiring from the limit
Does “COLD” switch
ohm out “closed”?
Zero Ohms
Replace limit switch
Check operation
NO
YES
Verify venting and vent terminations
are within allowable limits and clear
any obstructions.
Does User
Interface show High
Limit Trip in the
Last 4 Faults?
NO
Refer to 4 Flash
Fault section
YES