Getting Started - Trane UH1B040A9241C Series Service Facts

Service Facts
GETTING
STARTED
Is high voltage
power supplied
to the unit?
YES
Close and hold
door switch
Is the IFC LED flashing?
YES
What is the fault
light flash code?
See FAULT LED
Flash Codes page
16
Repair high voltage
NO
connection to unit.
Is 24VAC low voltage
present from transformer
NO
and fuse good
NO
Repair low voltage
wiring, replace
transformer, or
fuse as needed
Are connections and
wiring in working
YES
condition?
NO
Repair
connections
YES Replace IFC
UH1-DH1-SF-1L