Midea MIV V4+ Mini Service Manual page 25

DM12-01.01.05en
11.2 Troubles and causes of remote controller
Before asking for serving or repairing, check the following points.
Symptoms
The fan speed can not be changed.
The remote controller signal is not
transmitted even when the ON/OFF
button is pushed.
The TEMP .Indicator does not come
on.
The indication on the display
disappears after a lapse of time.
The TIMER ON indicator goes off after
a lapse of certain time.
No receiving tone sounds from the
indoor unit even when the ON/OFF
button is pressed.
Outdoor units
Causes
Check whether the MODE indicated
on the display is "AUTO"
Check whether the MODE indicated
on the display is "DRY"
Check whether the batteries in the
remote controller are exhausted.
Check whether the MODE indicated
on the display is FAN ONLY
Check whether the timer operation
has come to an end when the
TIMER OFF is indicated on the
display.
Check whether the timer operation
is started when the TIMER ON is
indicated on the display.
Check whether the signal
transmitter of the remote controller
is properly directed to the infrared
signal receiver of the indoor unit
when the ON/OFF button is
pressed.
MIV V4+ Mini DC Inverter R410A (220V, 8 kW)
When the automatic mode is selected, the
air conditioner will automatically change
the fan speed.
When dry operation is selected，the air
conditioner automatically change the fan
speed. The fan speed can be selected
during "COOL" , "FAN ONLY", and "HEAT"
The power supply is off.
The temperature cannot be set during FAN
mode.
The air conditioner operation will stop up to
the set time
Up to the set time, the air conditioner will
automatically start and the appropriate
indicator will go off.
Directly transmit the signal transmitter of
the remote controller to the infrared signal
receiver of the indoor unit, and then
repeatly push the ON/OFF button twice.
Solution
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