74
●
Check Before Requiring Services
Symptom Cause Remedy
Air conditioner does not run
at all although power is turned
on.
Power failure or after power failure Press ON/OFF operation button on remote
controller again.
Operation button is turned off.
● Switch on power if breaker is turned off.
● If breaker has been tripped, consult your dealer
without turning it on.
Fuse blow out. If blown out, consult your dealer.
Poor cooling or heating
performance
Air intake or air discharge port of indoor
and outdoor units is clogged with dust or
obstacles.
Remove dust or obstruction.
Fan speed switch is set to “Low”.* Change to “Medium” or “High”.*
Improper temperature settings See Section “
■
Tips for Energy Saving”.
Room is exposed to direct sunlight in
cooling mode.
Doors and /or windows are open.
Air filter is clogged. See Section “
■
Care and Cleaning”.
Too much heat sources in room in
cooling mode.
Use minimum heat sources and in a short time.
Too many people in room in cooling
mode.
Reduce temperature settings or change to “Medium”
or “High”.*
* Fan speed display on the remote controller
High :
(CZ-RTC4), (CZ-RTC5B, CZ-RTC6 series)
Medium :
(CZ-RTC4), (CZ-RTC5B, CZ-RTC6 series)
Low :
(CZ-RTC4), (CZ-RTC5B, CZ-RTC6 series)
If your air conditioner still does not work properly although you checked the points as described
above, first stop the operation and turn off the power switch. Then contact your dealer and report
the serial number and symptom. Never repair your air conditioner by yourself since it is very
dangerous for you to do so.
■
Tips for Energy Saving
Avoid
● Do not block the air intake and outlet of the unit. If either is obstructed, the unit will
not work well, and may be damaged.
● Do not let direct sunlight into the room. Use sunshades, blinds or curtains. If the walls and
ceiling of the room are warmed by the sun, it will take longer to cool the room.
Do
● Always try to keep the air filter clean. (See Section “■ Care and Cleaning”.) A clogged filter
will impair the performance of the unit.
● To prevent conditioned air from escaping, keep windows, doors and any other openings
closed.
NOTE
Should the power fail while the unit is running
If the power supply for this unit is temporarily cut off, the unit will automatically resume operation
once power is restored using the same settings before the power was interrupted.
Important Information Regarding The Refrigerant Used
NOTE
Refer to the Installation Instructions attached to the outdoor unit.
01_330918_EU_Eng.indb 74 2021/9/9 11:27:05
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