Midea MTA-76C(H)RN1

MCAC-UTSM-201501 Midea R410A T3 Top-discharge Split Type Series 50Hz
104
Symptom
Possible causes
Way of handing
The cooling effect is
poor.
The refrigerant is excessive or
deficient.
Detect leak, and fill the refrigerant of a
correct quantity.
Air or non-condensable gas
exists in the refrigerant loop.
Make a vacuum again and fill the
refrigerant.
The compressor fails.
Repair or replace the compressor.
The voltage is too high or too
low.
Install a voltage regulator.
The refrigerant loop is
obstructed.
Locate the causes and replace the part.
11.3 Faults of remote controller and cause
 The shift function cannot be set.
Symptom
Check item
Cause
The wind speed
cannot be shifted.
Check whether the mode
marked the screen of controller
is AUTO.
When the auto mode is selected, the
indoor fan speed will be in automatically
running and cannot be adjusted.
Check whether the mode
marked on the controller screen
is DRY.
When the dry mode is selected, the
indoor unit will set fan speed
automatically. The speed can
selectable only in cooling, heating and
fan mode.
 The transmitting symbol does not blink.
Symptom
Check item
Cause
Pressing ON/OFF
button, the remote
controller signal
cannot be
transmitted.
Check whether the batteries of
remote controller are low.
When the batteries are exhausted, the
signals cannot be transmitted.
 The temperature indicator does not light up.
Symptom
Check item
Cause
The temperature
indicator does not
light up.
Check whether the mode
marked on the screen is FAN.
In the fan mode, the temperature
cannot be set.