Trane Hyperion TAM8A0C60V51CA - Low Superheat Troubleshooting; Low Superheat Diagnosis

TAM834
LOW SUPERHEAT
Superheat below 3F at OD unit
Start Here
Is filter, coil,
and blower
wheel clean?
Clean or replace
as needed
NO
Perform sensor
check
YES
Perform “CLOSE
VALVE” test at
EVC.
Does suction
pressure drop?
Perform “OPEN
VALVE” test at
EVC.
Does suction
pressure rise?
Replace EVC
YES
Replace EVC
YES
Replace EEV.
Check operation
Ohm coil per FIG1
Is ohm reading
correct?
YES
Replace coil
NO
NO
NO
F
B
R
Insure ID motor is running
4 - Phase Coil Control
Figure 1
4 - BLUE
5 - BROWN (COMMON)
6 - RED (COMMON)
3 - ORANGE
2 - YELLOW
1 - WHITE
● Brown (common) to Blue or Yellow should measure 46 ohms
● Red (common) to Orange or White should measure 46 ohms