Trane TVR Pro CO Series Service Manual page 71

Procedure
xE9
Power off the unit and wait for the digital
The outdoor unit was powered on
Yes
display to turn off before restarting the
immediately after being powered off 1
unit
No
Replace outdoor main PCB
Notes:
1. When performing a manual restart of an outdoor unit, once the unit has been powered off it should not be powered on again until the digital display has
turned off.
70