172
Troubleshooting
Error
code
Malfunctioning
or protection
Cause of the problem and corrective action
L0
Compressor inverter module
fault.
Check:
• 1. compressor working pressures.
• 2. compressor winding heaters.
• 3. U V W sequence between inverter board and compressor.
• 4. L1 L2 L3 sequence between inverter board and filter board.
• 5. inverter board.
L1
Low voltage BUS protection
of the inverter module.
L2
High voltage BUS protection
of the inverter module.
L4 MCE protection.
L5 Speed 0 protection.
L7 Phase sequence error.
L8
Compressor frequency
variation greater than 15 Hz
in 1 sec.
L9
Compressor frequency
dierence to target greater
than 15 Hz.
To Next Page
Loading...
Need help?
General