mundoclima MUCS-20-W9, Руководство по обслуживанию

Страница: 24 / 33

Troubles and causes of remote controller
Before asking for serving or repairing, check the following points.
Symptoms Causes Solution
The fan speed cannot be
changed.
•
Check whether the MODE
indicated on the display is
“AUTO” When the automatic mode is
selected, the air conditioner will
automatically change the fan speed.
•
Check whether the MODE
indicated on the display is
“DRY”.
When dry operation is selected, the
air conditioner changes the fan
speed automatically. The fan speed
can be selected during “COOL”,
“FAN ONLY”, and ”HEAT”.
The remote controller signal is
not transmitted even when the
ON/OFF button is pushed.
•
Check whether the batteries in
the remote controller are
exhausted.
The power supply is off.
The TEMP. indicator does not
come on.
•
Check whether the MODE
indicated on display is FAN
ONLY.
The temperature cannot be set
during FAN mode.
The indication on the display
disappears after a lapse of
certain time.
•
Check whether the timer
operation has come to an end
when the TIMER OFF is
indicated on the display.
The air conditioner operation will
stop up to the set time.
The TIMER on indicator goes off
after a lapse of certain time.
•
Check whether the timer
operation is started when the
TIMER ON is indicated on the
display. Up to the set time, the air
conditioner will automatically start
and the appropriate indicator will go
off.
No receiving tone sounds from
the indoor unit even when the
ON/OFF button is pressed.
•
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.
Directly transmit the signal
transmitter of the remote controller
to the infrared signal receiver of the
indoor unit, and then repeatedly
push the ON/OFF button twice.
Malfunctions and malfunction code
If anything happens like the situation described below, please shut off the power supply of the unit and contact
with the customer service center immediately.
NO. Malfunction running lamp timer lamp
defrosting
lamp
alarm lamp alarm lamp
1
Room temperature sensor
check channel is abnormal.
×
☆
× × E2
2
E checking vaporator sensor
channel is abnormal.
☆
× × × E3
3 EEprom malfunction.
☆ ☆
× × E7
4
Water-level switch malfunction. × × ×
☆
EE
5
Fan failure.
☆
×
☆
× E8
6 Not set models. × ×
☆ ☆
PH
Note: × Extinguish,
☆
Flash at 5Hz.
27
Four-way Cassette DC Fan Coil Unit