Carrier 42QSS024DS-1 [11/12] Troubles and causes of wire controller
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Carrier 42QSS024DS-1 [11/12] Troubles and causes of wire controller

Carrier 38QUS048NT [11/12] Troubles and causes of wire controller
Symptoms
Causes
The fan speed can not be
changed.
Check whether the MODE
indicated on the display is
"AUTO"
Check whether the MODE
indicated on the display is
"DRY"
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 wire controller signal is
not transmitted even when
the ON/OFF button is pushed.
The power supply is off.
No receiving tone sounds
from the indoor unit even
when the ON/OFF button is
pressed.
Check whether the signal
transmitter of the wire
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 wire controller to the
infrared signal receiver of the
indoor unit, and then repeatly
push the ON/OFF button twice.
The indication on the display
disappears after a lapse of
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.
The TEMP. indicator does
not come on.
Check whether the MODE
indicated on the display is
FAN ONLY
The temperature cannot be set during
FAN mode.
Table 7-3
Solution
7.2. Troubles and causes of wire controller
Before asking for serving or repairing , check the following points. (Refer to Table 7-3)
Check whether the signal
transmitter of the wire
controller is properly directed
to the infrared signal receiver
of the indoor unit.
9
owner’s manual

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