Daikin FTXM09VVJU Operation Manual page 46

When the Need Arises
Troubleshooting
The room does not cool down / warm up
Case
Air does not come out.
Air does not come out /
Air comes out.
Air comes out.
Water or mist comes out
Case
Mist comes out of the indoor unit.
Water is leaking from the indoor
unit.
Remote controller
Case
The unit does not receive signals
from the remote controller or has
a limited operating range.
LCD is faint, is not working, or the
display is erratic.
" " on the LCD is blinking and
the remote controller cannot be
operated.
Other electric devices start
operating.
45
Description / what to check
„ In HEAT operation
• To prevent the release of cold air, air does not come out directly after operation is started.
Please wait 1 to 4 minutes.
• During defrosting operation, hot air does not flow out of the indoor unit.
„ When the air conditioner operates immediately after the circuit breaker is turned on
• The air conditioner is preparing to operate. Wait for about 3 to 10 minutes.
„ Is the airflow rate setting appropriate?
• Is the airflow rate setting low, such as "Indoor unit quiet" or "Airflow rate 1"? Increase the
airflow rate setting.
„ Is the set temperature appropriate?
„ Is the adjustment of the airflow direction appropriate?
„ Is the airflow rate set to AUTO in COOL operation?
Or is the unit operating in DRY operation?
• When the room temperature reaches the set temperature, the airflow rate will decrease to
a gentle breeze in order to prevent over-cooling and overheating. When the room
temperature deviates from the set temperature again, the gentle breeze will stop and the
airflow will become stronger. Also, if the room temperature stabilizes near the set
temperature, the airflow rate may repeatedly alter between strong and weak. (The unit
may appear to be operating and stopping repeatedly, but this is not the case.)
• Is there any furniture directly under or beside the indoor unit?
• Is the air conditioner in ECONO operation or OUTDOOR UNIT QUIET operation?
• Are the air filters dirty?
• Is there anything blocking the air inlet or air outlet of the indoor unit or outdoor unit?
• Is a window or door open?
• Is an exhaust fan turning?
• Depending on the room conditions, number of occupants, or outdoor temperature and
humidity, the set temperature may not be reached.
Description / what to check
• This happens when the air in the room is cooled into mist by the cold airflow during COOL
or other operation.
• If the drain hose is crushed or clogged, water from the indoor unit may be unable to drain
and start leaking. Stop operation of the unit immediately and contact your dealer.
Description / what to check
• The batteries may be exhausted.
Replace both batteries with new dry batteries AAA.LR03 (alkaline).
For details, refer to "Preparation Before Operation".
• Signal communication may be disabled if an electronic-starter-type fluorescent lamp (such
as inverter-type lamps) is in the room. Consult your dealer if that is the case.
• The remote controller may not function correctly if the transmitter is exposed to direct sunlight.
• The batteries may be exhausted.
Replace both batteries with new dry batteries AAA.LR03 (alkaline).
For details, refer to "Preparation Before Operation".
• Battery power has run out.
Replace both batteries at the same time with new size AAA.LR03 (alkaline) batteries.
Leaving exhausted batteries in the remote controller can result in injury due to battery
leakage, rupturing or heating, or lead to equipment failure.
(Even when the is blinking, the OFF button remains functional.)
• If the remote controller activates other electric devices, move them away or consult your
dealer.
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