When the Need Arises
29
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 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.
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 Cutting the jumper 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).
Please consult your dealer.
*2 Installing a drain pan heater (sold separately) will further extend
the heating operation range to –13°F (–25°C).
Please consult your dealer.
Mode
Operating conditions
COOL / DRY
Outdoor temperature : 50*
1
- 115°F (10*
1
- 46°C)
*1
–4°F (–20°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*
2
- 75°F (–15*
2
- 24°C)
*2 –13°F (–25°C)
if a drain pan heater (sold separately) is
installed.
Indoor temperature : 50 - 86°F (10 - 30°C)
Troubleshooting
01_EN_3P686870-1.indd 29
2022/06/03 15:51:00
