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■
Confirmation and check
If a problem occurs with the air
conditioner, the OFF timer indicator
alternately shows the check code and
the indoor Unit No. in which the
problem occurred.
■
Troubleshooting history and confirmation
You can check the troubleshooting history with the following procedure if a problem occurs with the air conditioner.
(The troubleshooting history records up to 4 incidents.)
You can check it during operation or when operation is stopped.
• If you check the troubleshooting history during OFF timer operation, the OFF timer will be cancelled.
Procedure
Push the OFF timer button for over 10 seconds and the
indicators appear as an image indicating the
troubleshooting history mode has been entered. If
[
Service check] is displayed, the mode enters in the
troubleshooting history mode.
1
• [01: Order of troubleshooting history] appears in the
temperature indicator.
• The OFF timer indicator alternately shows the [check
code] and the [indoor Unit No.] in which the problem
occurred.
Each time the setting button is pushed, the recorded
troubleshooting history is displayed in sequence.
The troubleshooting history appears in order from [01]
(newest) to [04] (oldest).
2
CAUTION
CAUTION
In the troubleshooting history mode, DO NOT push the
Menu button for over 10 seconds, doing so deletes the
entire troubleshooting history of the indoor unit.
After you have finished checking, push the ON/OFF button
to return to the regular mode.
3
• If the air conditioner is operating, it remains operated
even after the ON/OFF button has been pushed.
To stop its operation, push the ON/OFF button again.
23-EN
Check code
The indoor Unit No. in which
the problem occurred.
Description of operation
1
2
9
Operations and performance
▼Check before running
• Check whether the earth wire is cut or disconnected.
• Check whether the air filter is installed.
• Turn on the circuit breaker 12 hours or more before starting
operation.
▼3 minutes protection function
3-minutes protection function prevents the air conditioner
from starting for initial 3 minutes after the main power switch
/ circuit breaker is turned on for re-starting the air conditioner.
▼Power failure
Power failure during operation will stop the unit completely.
• To restart the operation, push the ON / OFF button on the
remote controller.
• Lightning or a wireless car telephone operating nearby
may cause the unit to malfunction. Turn off the main power
switch or circuit breaker and then turn them on again. Push
the ON / OFF button on the remote controller to restart.
▼Defrosting operation
If the outdoor unit is frosted during the heating operation,
defrosting starts automatically (for approximately 2 to 10
minutes) to maintain the heating capacity.
• The fans in both indoor and outdoor units will stop during
the defrosting operation.
• During the defrosting operation, the fan of the indoor unit /
outdoor unit stops and the louver of the indoor unit closes.
• During the defrosting operation, the defrosted water will be
drained from the bottom plate of the outdoor unit.
▼Heating capacity
In the heating operation, the heat is absorbed from the
outside and brought into the room. This way of heating is
called heat pump system. When the outside temperature is
too low, it is recommended to use another heating apparatus
in combination with the air conditioner.
▼Air conditioner operating conditions
For proper performance, operate the air conditioner under the following temperature conditions:
Refer to the combined outdoor unit installation manual for details about the outdoor temperature.
Room temperature
Cooling operation
[CAUTION]
Heating operation
Room temperature
3
If air conditioner is used outside of the above conditions, safety protection may work.
– 12 –
▼Protective device
• Stops operation when the air-conditioner is overloaded.
• If the protective device is activated, the unit stops running,
and the operation indicator and check indicator on the
remote controller blink.
▼If the protective device is activated
• Turn off the circuit breaker and perform a checkup.
Continued running may cause a malfunction.
• Check whether the air filter is installed. If not, the heat
exchanger may be clogged with dust and water leakage
may occur.
During cooling
• The air intake or discharge of the outdoor unit is
clogged.
• Strong wind continuously blows against the discharge of
the outdoor unit.
During heating
• The air filter is clogged with a large amount of dust.
• The air intake or discharge of the indoor unit is clogged.
▼Do not turn off the circuit breaker
• During the air-conditioning season, leave the circuit
breaker turned on, and use the ON / OFF key on the
remote controller.
▼Attention to snowfall and freeze on the
outdoor unit
• In snowy areas, the air intake and air discharge of the
outdoor unit are often covered with snow or frozen up.
If snow or freeze on the outdoor unit is left as it is, it may
cause machine failure or poor warming.
• In cold areas, pay attention to the drain hose so that it
perfectly drains water without water remaining inside for
freeze prevention. If water freezes in the drain hose or
inside the outdoor unit, it may cause machine failure or
poor warming.
: 21 °C to 32 °C (Dry bulb temp.), 15 °C to 24 °C (Wet bulb temp.)
Room relative humidity – less than 80%. If the air conditioner operates in excess of this
figure, the surface of the air conditioner may cause dewing.
: 15 °C to 28 °C (Dry bulb temp.)
24-EN
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