Does it indicate Normal operation?
(Refer to Operation not trouble)
Check operation condition
Address set up of indoor and outdoor correct?
Is the transmission line connected?
(Refer to Trouble shooting 51)
Check setting up and
connection
Is the Main unit installation stable?
Is there anything obstructing the fan rotation?
(Refer to Trouble shooting 53)
Check Indoor unit
Noise during the
operation is noticeable
Is LED indicating error?
(Refer to Trouble shooting 13~48)
Diagnose by
Outdoor unit LED
Is the main cabinet broken?
Does drain water come out of drain hose?
(Refer to Trouble shooting 54)
Check Drain route
Water leakage from
Indoor unit
Is the Main unit installation stable?
Is there anything obstructing the fan rotation?
(Refer to Trouble shooting 53)
Check Outdoor unit
Isn’t air Filter of Indoor unit dirty?
Are Indoor / Outdoor heat exchanger clogged?
(Refer to Trouble shooting 52)
Check condition of
equipment
Is the unit capacity fitting to the size of the room?
Is the remote set up (temp./fan) correct?
(Refer to installation Manual and D&T Manual)
Check User environment
It is operating but no
cooling or no heating
DetailsCheck methodSymptom
Is LED indicating error?
(Refer to Trouble shooting 1~12)
Diagnose by
Indoor unit LED
Is this model possible to connect the subject
indoor unit, outdoor unit, and remote control?
(Refer to Installation Manual, D&T Manual)
Check system
Is LED indicating error?
(Refer to Trouble shooting 1~12)
Diagnose by
Indoor unit LED
Is LED indicating error?
(Refer to Trouble shooting 13~48)
Diagnose by
Outdoor unit LED
Isn’t the breaker down?
(Refer to Trouble shooting 49, 50)
Check power supply
Does not operate
06-08
6-3 TROUBLE SHOOTING
6-3-1 How to Trouble Shoot From the Symptom
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