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7.2 Troubles and causes of remote controller
Before asking for serving or repairing, check the following points.
(see in Table 7-2)
Table 7-2
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 sound No
receiving tone sounds from the
indoor unit even when the ON/OFF
button is pressed.
MDCI Series – All DC Inverter Outdoor Units (Triphase)
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.
TROUBLESHOOTING | 9
Solution
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.
6 720 844 656 (2015/11)
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