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DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting
Multi Liberty
DC Inverter
Is system operation normal now?
Does LED4 (Red) on Outdoor Unit’s
PCB light up and is LED1 (Yellow)
flashing?
Power supply problem of Outdoor
Unit’s PCB. Check connections of
PCB according to wiring diagram.
Are connections OK?
Disconnect the system from power supply. Wait
some minutes, then connect the system to powerv
supply again. Start the system by using IR Remote
Controller.
Check connections of L, N, S
lines (and of Ground line)
between each Indoor Unit and
the Outdoor Unit.
Is
Outdoor
Unit’s
PCB
connected to the Ground
correctly?
•Troubleshooting for Error Codes shown on Display of Multi Liberty HKEU X Indoor Unit
Check connections and
test system again.
Correct
or
restore
connections.
Replace Outdoor Unit’s
PCB.
Replace Indoor Unit’s
PCB. After a reset of
power supply, is the
problem solved?
NO
NO
NO
NO
NO
YES
YES
YES
Error Code on Indoor Unit
Outline of malfunction
E I
Communication error between Indoor Unit ↔ Outdoor Unit
Communication error between Indoor Unit ↔
Outdoor Unit.