YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
45
Error
Code
Content
Error
Code
Content
Error
Code
Content
L0
Indoor Unit Error
L9
Quantity of Group Control
Indoor Units Setting Error
d8
Water Temperature Sensor Error
L1
Indoor Fan Protection
LA
Indoor Units Incompatibility
Error
d9
Jumper Cap Error
L2
E-heater Protection
LH
Low Air Quality Warning
dA
Indoor Unit
Network Address Error
L3
Water Full Protection
LC
Outdoor-Indoor
Incompatibility Error
dH
Wired Controller Circuit Board
Error
L4
Wired Controller Power
Supply Error
D1
Indoor Unit Circuit Board
Error
dC
Capacity DIP Switch Setting Error
L5
Anti-freezing Protection
D3
Ambient Temperature
Sensor Error
dE
Indoor Unit CO
2
Sensor Error
L7
No Master Indoor Unit Error
D4
Inlet Pipe Temperature
Sensor Error
C0
Communication Error
L8
Power Insufficiency
Protection
D6
Outlet Pipe Temperature
Sensor Error
AJ
Filter Cleaning Reminder
db
Special Code:
Project Debugging Code
dL
Outlet Air Temperature
Sensor Error
CHECKING UNITS PRIOR TO CONTACTING YOUR TECHNICIAN
Do not attempt to repair the air conditioner yourself. An Incorrect repair may cause electric shock or fire, so please
contact an authorized service center for professional repair.
Following checks prior to contacting an authorized service center may save you time and costs.
Phenomenon
Normal or Abnormal
The unit doesn't deliver cooling or heating, immediately after
the unit is restarted (remote control or power resuming).
If the unit is powered off, and then restored, it will not run the compressor until 3
minutes later. This is normal 3-minutes restarting protection due to high internal
refrigerant pressure.
The unit emits a smell.
For a new unit, some of the odor is normal.
For any bad or abnormal odor, shut off the unit and check the unit and the area
around the unit for anything visible that could cause the odor. May need to call
your technician.
Hearing the sound of "water flow" inside the unit.
Normally this is due to refrigerant flowing through the coils.
Mist is blowing out of the unit.
Normally this happens during cooling startup period, when the indoor air is hot
and humid.
Hearing creaking noise during unit starting or shutting off.
Normally this is caused by the expansion or contraction of components due to
temperature changes.
The unit doesn't operate at all.
1) Is power shut off or lost?
2) Is the TIMER set up?
3) Is the circuit breaker engaged, or tripped?
4) Is the fuse connected, or blown?
5) Is the voltage too high or low?
6) Is the flow control or other switches breaking the circuit?
7) Is the unit under the 3-minute restarting protection period?
8) Does the remote control have power?
Unit doesn't respond to remote control.
1) Dose the remote control have battery power?
2) Is the remote control pointing at sunshine or bright lights?
3) Is the remote control signal blocked?
4) Is the remote control too far away from indoor unit?
5) Is the fuse on indoor unit blown?
6) Is the indoor unit powered on?
7) Is the indoor unit transformer good?
8) Is the indoor unit control board good?
