42
Temperature display disappear
Symptom Checking
items Cause
Temperature Display does not light.
Check if the mode display on
the LCD is FAN ONLY
You can not set the temperature when
the unit is on FAN ONLY mode.
The Display Goes Off
Symptom Checking
items
Cause
The indication on the display
disappears after a lapse of time.
Check whether the timer
operation has come to an end
when the OFF TIMER is
indicated on the display.
The air conditioner operation stops since
the set time elapsed.
The ON TIMER indicators go off
after a lapse of certain time.
Check whether the timer
operation is started when the
ON TIMER is indicated on the
display.
When the time set to start the air
conditioner is reached, the air conditioner
will automatically start and the appropriate
indicator will go off.
The Signal Receiving Tone does Not Sound
Symptom Checking
items
Cause
No receiving tone sounds from
the indoor unit even when the
ON/OFF button is pushed.
Check whether the signal
transmitter of the remote controller
is properly directed to the receiver
of the indoor unit when the
ON/OFF button is pushed.
Direct the signal transmitter of the remote
controller to the receiver of the indoor unit,
and then repeatly push the ON/OFF button
twice.
Buttons on the remote controller
don't work.
Press Reset button.
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.
Содержание YKHC 18
Страница 1: ...Cassette YKHC 18 to 48 SERVICE MANUAL YKHC 18 YKHC 24 YKHC 30 YKHC 36 YKHC 48 SM YKHC 18 48GB 03 07...
Страница 24: ...22 Part8 Wiring diagram 1 YKHC 12 18 Indoor unit Outdoor unit...
Страница 25: ...23 2 YKHC 24 Indoor unit Outdoor unit XT1 XT2 RT3 XS1 XP1 KM1 CAP1 FAN COMP CAP2 XT3 VALVE...
Страница 35: ...33 4 Relocate the air in grid in the procedure of reversed order install the air in grid...
Страница 40: ...38...
Страница 45: ...43 Part12 Exploded view Indoor unit 1 YKHC 12 18...
Страница 53: ...www johnsoncontrols com SM YKHC 18 48GB 03 07...