Clean; Cleaning Indoor Unit; Cleaning Air Filter - York YKHC 18 Service Manual

Symptom
Temperature Display does not light.
Symptom
The indication on
disappears after a lapse of time.
The ON TIMER indicators go off
after a lapse of certain time.
Symptom
No receiving tone sounds from
the indoor unit even when the
ON/OFF button is pushed.
Buttons on the remote controller
don't work.

3. Clean

CAUTION: Please turn off your air conditioner and disconnect power supply before cleaning.

(1) CLEANING INDOOR UNIT

Use a dry to wipe the indoor unit.
A cloth dampened with cold water may be used if the indoor unit is too dirty.
It is allowed to remove the front panel of indoor unit and clean it with water, and ensure to wipe it up with a
dry rag.
Note: Do not use a chemically treated duster for wiping or leave such materials near the unit for long.
Do not use benzene, thinner, polishing powder, or similar solvents for cleaning.

(2) CLEANING AIR FILTER

The air filter in unit can filter dust and other granules in air. It may reduce the cooling effect that the air filter is
covered with dust. So clean the air filter often.
Temperature display disappear
Check if the mode display on
the LCD is FAN ONLY
The Display Goes Off
Checking items
the display Check
operation has come to an end
when the OFF TIMER is
indicated on the display.
Check
operation is started when the
ON TIMER is indicated on the
display.
The Signal Receiving Tone does Not Sound
Checking items
Check whether
transmitter of the remote controller
is properly directed to the receiver
of the indoor unit when the
ON/OFF button is pushed.
Checking items
whether the timer
whether the timer
the signal
42
Cause
You can not set the temperature when
the unit is on FAN ONLY mode.
Cause
The air conditioner operation stops since
the set time elapsed.
When the time set to start the air
conditioner is reached, the air conditioner
will automatically start and the appropriate
indicator will go off.
Cause
Direct the signal transmitter of the remote
controller to the receiver of the indoor unit,
and then repeatly push the ON/OFF button
twice.
Press Reset button.