Trane 4TXM2318BF300AA Service Manual page 143

[25] Module Input Over-Current
Check if wire of electric box is
correct, and if compressor wire
If compressor is
normal(compressor coil
resistor, insulation)
If power module is normal
Solve the failures due
to relative information
[26] MCU Reset
Check if wire of electric box
is correct , and if compressor
wire is fixed well
If compressor is
normal(compressor coil
resistor, insulation)
If PCB is normal
Solve the failures due
to relative information
is fixed well
Y
Y
Y
Y
Y
Y
N
Correct the wiring due to diagram
N
Repalce compressor
N
Replace power module
N
Correct the wiring due to diagram
N
Repalce compressor
N
Replace PCB
141