York YKFE12BXEXBH-RX Installation And Owner's Manual page 27

Trouble Shooting
Insufficient cooling
The operation controller
adjusted as required?
Any obstacle exists at the air inlet or
outlet?
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
10
1
2
8
14
① : Optional equipment
24
Air filter too dirty?
Sunlight direct into the room?
Wired controller display ①
E0
E1
E2
E8
FC
Any other heat sources in
the room?
Too crowded in the room?
Troubleshooting
Malfunction of drain system
Faulty ambient
temperature sensor
Faulty coil temperature
sensor
Abnormal communication
between indoor wired
controller and indoor unit
PCB
Indoor coil temperature too
high in cooling mode
Door or window left opened?
Possible reasons
Pump motor disconnected
or at wrong position, or
the float switch broken
down, or the float switch
disconnected or at wrong
position.
Sensor disconnected,
or broken, or at wrong
position, or short circuit.
Sensor disconnected,
or broken, or at wrong
position, or short circuit.
Wrong connection, or
the wired controller be
disconnected, faulty PCB.
Refrigerant leakage or
indoor coil sensor falling
off or failure on 3 phases
outdoor unit.