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7.4 Failure and Related Causes of Remote Controller
Before requesting service or maintenance, please check the following items
Changing function can not be set
Symptom Checking Item Cause
Check if “Auto” mode is displayed When “Auto” is chosen, indoor fan will
choose “Auto” fan speed
Fan speed can not be
changed
Check if “Dehumidification” is
displayed
When dehumidification is chosen, indoor unit
automatically chooses “Auto” fan speed. Fan
speed can only be chosen under “cooling”,
“heating” and “fan” mode.
Emission signal “” does not blink
Symptom Checking item Cause
When pressing On/Off button,
remote control signal is not
emitted.
Check battery Signal can not be emitted when there is
no battery
Temperature display is dark
Symptom Checking item Cause
Temperature display is dark Check if “Fan” is chosen Under Fan mode, temperature can not be
set
Display disappears
Symptom Checking item Cause
After a while, On/Off display
disappears
Check if set time of the timer is
already finished
Because set time is reached, A/C stops
running
After a while, “Timer On” display
disappears
Check if set time of the timer is
already finished
When set time for A/C running is
reached, A/C start running automatically
and related display disappears
No sound for signal receipt
Symptom Checking item Cause
When pressing On/Off button,
A/C doesn’t give out receipt
sound
When pressing the button, make
sure that the emitter of the
remote control is directed to the
receiver of the A/C.
Check if power supply is well
connected
Direct the emitter to the receiver correctly
and press the On/Off button repeatedly
The A/C is turned off so it can not receive
signals
Button on remote control doesn’t
function
Check the remote display The button is locked
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