8
Troubleshooting
The following symptoms do not indicate malfunction.
Symptom
Cause
POWER indicator blinks before the unit is switched on. • This is the preliminary step to prepare for the TIMER operation
after it has been set.
When Timer is set ON, the unit may start earlier (up to 35
minutes) before the actual set time to achieve the desired
temperature on time.
POWER indicator blinks during HEAT mode with no
warm air supply (and
fl
ap is closed).
• The unit is in defrost mode (and AIR SWING has been set to
AUTO).
POWER indicator blinks, then stops blinking during
COOL/DRY mode.
• The system has been locked to operate in HEAT mode only.
TIMER indicator is always ON.
• When Timer has been set, the Timer setting repeats daily.
Operation is delayed a few minutes after restarting.
• The delay is a protection to the unit’s compressor.
Cooling/heating capacity is reduced during lowest fan
speed setting.
• The lowest fan speed is to have a low noise operation, so cooling/
heating capacity may be reduced depending on the condition.
Increase the fan speed to increase the capacity.
In COOL mode, when the room temperature reaches
near the set temperature, the compressor stops, then
the indoor unit fan speed reduced.
• To prevent the room humidty rising. The indoor fan will resume
running according to the set fan speed when room temperature
increase.
Indoor fan stops occasionally during heating operation. • To avoid unintended cooling effect.
Indoor fan stops occasionally during automatic fan
speed setting.
• This is to help remove the surrounding odour.
Air
fl
ow continues even after operation has stopped.
• To extract the remaining heat from the indoor unit (maximum 30
seconds).
During deice operation,
fl
ap is closed.
• The AIR SWING is set to AUTO.
The room has a peculiar odour.
• This may be due to damp smell emitted by the wall, carpet,
furniture or clothing.
Cracking sound during operation.
• Changes in temperature caused the unit to expand and contract.
Water
fl
owing sound during operation.
• Refrigerant
fl
ow inside the unit.
Mist emerges from indoor unit.
• During cooling operation, the discharged cold air may condense
to water vapour.
Outdoor unit emits water or steam.
• During cooling operation, condensation occurs on cold pipes and
the condensed water may drip from the outdoor unit.
• During heating operation, frost formed on the outdoor unit during
deice cycle melts and is discharged as water or steam.
Discoloration of some plastic parts.
• Discoloration is subjected to the types of materials used in plastic
parts. It is accelerated when exposed to heat, sun light, UV light
or environmental factors.
Soft buzzing sound from indoor unit during nanoe™X
operation.
• It is normal when the nanoe™X generator is working. If you are
concerned about the sound, cancel the nanoe™X operation.
Wireless LAN indicator is ON when the unit is OFF.
• The unit’s wireless LAN connection with the router has been
activated.
Check the following before calling for servicing.
Symptom
Check
Operation in HEAT/COOL mode is not working
ef
fi
ciently.
• Set the temperature correctly.
• Close all doors and windows.
• Clean or replace the
fi
lters.
• Clear any obstruction at the air inlet and air outlet vents.
Noisy during operation.
• Check if the unit has been installed at an incline.
• Close the front panel properly.
Remote control does not work.
(Display is dim or transmission signal is weak.)
• Insert the batteries correctly.
• Replace weak batteries.
