Midea EL-KF20GW/N2Y-A(B) Service Manual page 25

GD Midea Refrigerant Equipment Co. Ltd
PROBLEM
Outdoor transformer
Insufficient
failure
cooling or
Indoor PCB failure
heating.
Indoor PCB failure
Lack of refrigerant
Soft starter module
Compressor
failure
protection
Overcurrent protector
failure
Outdoor PCB failure
Temperature sensor
Open or short
failure
circuit of outdoor
Connector failure or
temperature
loose
sensor
Outdoor PCB failure
Temperature sensor
Room temp or
failure
evap temp
Connector failure or
sensor open or
loose
short circuit
Indoor PCB failure
Soft starter module
Over load or too
failure
low voltage
protection Power failure
Wiring failure
Fan speed
Indoor fan motor
beyond control
failure
Indoor PCB failure
Zero-crossing
Indoor PCB failure
error
LED failure
No display on
Remote control shut
indoor unit.
the display
No power
Wiring
Temperature setting
Mode setting
No cooling or
Soft starter module
heating.
failure
Reverse valve
solenoid coil
Reverse valve
CAUSE
Replace if failure.
Replace the PCB if the photon coupling on indoor PCB is failure.
Replace after checked failure.
Check leakage. Recycle the refrigerant. Correct and recharge if there is
any leakage in the refrigerant system.
Check the module and the capacitor connected to the module. Replace
if failure.
Check the resistance of compressor overcurrent protector. Replace if
failure.
Replace after checked failure.
Replace after checked failure.
Repair or replace the sensor.
Replace after checked failure.
Replace after checked failure.
Repair or replace the sensor.
Replace after checked failure.
Check the module and the capacitor connected to the module. Replace
if failure.
Wait if checked the power voltage is really too low.
Correct if indoor fan motor wiring is loose.
Check the input of fan motor. Replace if failure.
Replace after checked failure.
Replace after checked failure.
Replace the display if checked failure.
Push the button to turn the display on.
Check the voltage. Call an electrician if not within the limit.
Check the terminals. Repair and correct if loose.
Check and adjust the temperature setting.
Check and adjust the mode setting.
Check the module and the capacitor connected to the module. Replace
if failure.
Check the reverse valve solenoid coil. Replace the coil if short, open or
damaged.
If the reverse valve is blocked, the heating mode will not perform.
Replace the reverse valve after checking the reason.
Service manual for Electrolux split Series
REMEDY
24