Trane TAMXB0A24V21DB - Page 69

18-GJ89D1-1F-EN
69
STEP 1
Sensors
Verified
Perform Sensor
Check as per Service
Facts Troubleshooting
Flowchart
No
Yes
Troubleshooting Low Superheat
Perform these steps if Superheat is less than 3°F
STEP 2
4-Flash
EVC Error
Yes
3rd party
shutdown device
installed
Yes
Device wired in
series with R or
aux contacts?
No No
Yes
No
No
Yes
System has
proper
Superheat
Rewire shutdown
device. Retest
To
A
STEP 3
Is indoor motor
running
Correct issue and
retest for Low
Superheat
No
System has
proper
Superheat
To
A
Yes
Yes
No
System
is clean and free
of debris
No
No
Yes
Yes
Correct and retest for
Low Superheat
System has
proper
Superheat
To
A
P2
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