Split system (Single phase and 3-phase type)
Clear 20: Inverter error
Hydraulic Unit LED: Green 6 flashes / Red 3 flashes
Outdoor Unit LED: 18 flashes
Probable causes:
Connection failure.
Main PCB failure.
Check:
1. Check connections in control unit:
- Check if the terminal connection is loose.
- Check if connector is removed.
- Check if connector is erroneous connection.
- Check if cable is open.
Upon correcting the removed connector or mis-wiring, reset
the power.
2. Replace Main PCB :
If Check Point 1 does not improve the symptom, replace
Main PCB.
Maintenance Document 1544-1
OK
23