24
Insufficient cooling
The operation controller
adjusted as required?
Air filter too dirty?
Any other heat sources in
the room?
Door or window left opened?
Any obstacle exists at the air inlet or
outlet?
Sunlight direct into the room?
Too crowded in the room?
When the air conditioner does not operate properly after you have checked the above-mentioned items or when
following phenomenon is observed, stop the operation of the air conditioner and contact your dealer.
1) The fuse or breaker often shuts down.
2) Water drops off during cooling or drying operation.
3) There is an irregularity in operation or abnormal sound that is audible.
Indoor Troubleshooting:
YSM3F (10-18) AAS
LED flash times of signal
receiver board
Wired controller display
①
Troubleshooting
Possible reasons
10
E0
Malfunction of drain system
Pump motor disconnected
or at wrong position, or
the float switch broken
down, or the float switch
disconnected or at wrong
position.
1
E1
Faulty ambient
temperature sensor
Sensor disconnected,
or broken, or at wrong
position, or short circuit.
2
E2
Faulty coil temperature
sensor
Sensor disconnected,
or broken, or at wrong
position, or short circuit.
8
E8
Abnormal communication
between indoor wired
controller and indoor unit
PCB
Wrong connection, or
the wired controller be
disconnected, faulty PCB.
14
FC
Indoor coil temperature too
high in cooling mode
Refrigerant leakage or
indoor coil sensor falling
off or failure on 3 phases
outdoor unit.
Trouble Shooting
①
: Optional equipment
