When the Need Arises
35
Others
Case
Description / what to check
The air conditioner suddenly
starts behaving strangely during
operation.
•
The air conditioner may malfunction due to lightning or radio.
If the air conditioner malfunctions, turn off the power with the circuit breaker and restart the
operation with the remote controller.
The WEEKLY TIMER does not
operate according to the settings.
•
Check if the ON/OFF TIMER and the WEEKLY TIMER are set to the same time.
Change or deactivate the settings in the ON/OFF TIMER.
Page 19, 20
HEAT operation cannot be
selected, even though the unit is
heat pump model.
•
Check that the jumper (J8) has not been cut. If it
has been cut, contact your dealer.
Jumper (J8)
The ceiling and walls around the
indoor unit are black and dirty.
•
Due to the circulation pattern of the air and static electricity, the air conditioner is causing
airborne dirt and dust to stick to walls and other surfaces. Depending on the wallpaper type,
dirt may adhere more easily. A thorough cleaning of the area around the air conditioner is
recommended.
The ON/OFF TIMER does not
operate according to the settings.
•
Check if the ON/OFF TIMER and the WEEKLY TIMER are set to the same time.
Change or deactivate the settings in the WEEKLY TIMER.
Page 21
Notes on the operating conditions
•
If operation continues under any conditions other than those listed in
the table,
− A safety device may activate to stop the operation.
− Dew may form on the indoor unit and drip from it when COOL or
DRY operation is selected.
*1, *2 Turning on switch on the outdoor unit PCB will extend the
cooling operation range to 14°F (–10
°C
).
Installing an air direction adjustment grille (sold separately)
will further extend the operation range
to
–4°F (–20
°C
) for RX models or
to
–22°F (–30
°C
) for RK models.
Please consult your dealer.
Mode
Operating conditions
COOL / DRY
Outdoor temperature :
[RX models]
: 50*
1
- 115°F (10*
1
- 46°C)
[RK models]
: 50*
2
- 115°F (10*
2
- 46°C)
*1 –4°F (–20°C)
*2 –22°F (–30°C)
if an air direction adjustment grille (sold
separately) is installed.
Indoor temperature : 64 - 90°F (18 - 32°C)
Indoor humidity
: 80% max.
HEAT
Outdoor temperature : 5
- 75°F (–15 - 24°C)
Indoor temperature : 50 - 86°F (10 - 30°C)
Troubleshooting
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2022/06/01 15:31:36