Trane 4TVH0086FE000AA Service Manual page 98

L0: Inverter module protection
L1: DC bus low voltage protection
L1 protection
The power supply is abnormal
No output from bridge rectifier
The DC bus voltage (P, N) is abnormal
Replace the inverter module
Yes
No
Yes
No
Yes
1
No
Check the power supply
equipment
The reactor performs well
Yes
97
No Replace the
reactor