:
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
53
L0~L9 OR H4: COMPRESSOR MODULE PROTECTION
DEFINITION
H4: L0 or L1 errors happen for three times in 60 seconds. The unit will stop and requires recycling power to restart.
Fig. 60 —L0~L9 Troubleshooting Chart
POSSIBLE CAUSES
• ODU system in poor heat dissipation
• IPM in poor heat dissipation
• Improper power supply
• Damaged compressor module in power drive board
• Burnt compressor
• Improper refrigerant in the system
Error Detailed Definition Number of Flashing Times for Green LED Red LED
Compressor module protection
L0: Error in compressor module 8
Light on constantly
L1: DC bus under-voltage protection 9
L2: DC bus over-voltage protection 10
L4: Compressor MCE error 12
L8: Compressor speed difference between set
and run is more than 15 rps
16
L9: Compressor speed difference is more than
15 rps in one second
17
A210298
To Next Page
Loading...
