Trane *UH2C100A9V4VA - Gas Piping and Combustion Checks

32
Service Facts
X343070P08
Is the IFC LED flashing?
Is high voltage
power supplied
to the unit?
NO
NO
Replace IFC
YES
Is 24VAC low voltage
present from transformer
and fuse good
YES
NO
Repair low voltage
wiring, replace
transformer, or
fuse as needed
Repair high voltage
connection to unit.
What is the fault
light flash code?
See FAULT LED
Flash Codes page
YES
Are connections and
wiring in working
condition?
Repair
connections
NO
Close and hold
door switch
YES
GETTING
STARTED