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9.4 Troubles and solutions concerning the remote controller
Please make the following check before asking for repair or maintenance.
Trouble Cause
Solutions
Check if the mode display on the
LCD is AUTO
The lndoor Unit will select fan speed
automatically when AUTO mode is
selected.
CAN NOT CHANGE
THE FAN SPEED
SETTING
Check if the mode display on the
LCD is DRY
The lndoor Unit will select fan speed
automatically when the unit is on
DRY mode.
The transmission symbol does not flash
Symptom Checking
items Cause
Press ON/OFF button, the
remote controlling signals can
not be transmitted
Check if the remote controller
has run out of power
When the battery was out,
transmission signals can not be
sent
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.
Summary of Contents for YOHC 12
Page 7: ...Part 2 Indoor units Ceiling Floor Type ...
Page 17: ...4 Service space 600mm 600mm ...
Page 20: ...6 1 3 YOKC 24 6 1 4 YOKC 30 ...
Page 21: ...6 1 5 YOKC 36 6 1 6 YOKC 48 YOKC 60 ...
Page 30: ...Discharge angle 60 FLOOR Airflow velocity Temperature ...
Page 37: ...Part 3 Outdoor Units Outdoor Units ...
Page 39: ...1 Dimensions 1 1 YOJC 12 290 315 285 530 62 590 750 110 1 2 YOJC 18 12 5 ...
Page 40: ...1 3 YOJC 24 330 62 895 860 590 141 1 4 YOJC 30 YOJC 36 ...
Page 41: ...1 5 YOJC 48 YOJC 60 ...
Page 43: ...3 Wiring diagrams 3 1 Cooling Heating 3 1 1 YOJC 12 3 1 2 YOJC 18 ...
Page 46: ...4 Field Wiring ...
Page 49: ...7 Sound levels 1m Microphone 12000btu h 18000btu h ...
Page 50: ...24000btu h 3000btu h 36000btu h 48000btu h 60000btu h ...
Page 66: ...Part 4 Installation Installation ...
Page 75: ...www johnsoncontrols com SM YOHC 12 60GB 03 07 ...