21
Before Requesting Services
Symptom Cause Action
The air conditioner
does not operate
although the
power is turned on.
Power failure or after power
failure
Press the power ON/OFF button on the
remote controller.
The operation (power) button is
turned off.
• If the breaker is turned off, turn the power
on.
• If the breaker has been tripped, consult
your dealer without turning it on.
Fuse blow out. Contact your dealer.
Poor cooling or
heating performance
The air intake or air outlet of
indoor and outdoor units is
clogged with dust.
• Remove the dust.
The fan speed switch is set to
“Low”.*
• Change to “Medium” or “High”.*
Improper temperature settings • See “Tips for Energy Saving”. (P.15)
The room is exposed to direct
sunlight in cooling mode.
Doors or windows are open.
The air fi lter is clogged. • See “Maintenance”. (P.17-18)
Too many heat sources in the
room in cooling mode.
• Use minimum heat sources and in a short
time.
Too many people in the room in
cooling mode.
• Lower the temperature setting or change to
“Medium” or “High”.*
* Regarding the remote control display.
* In the case of nanoe™X ‘‘OFF’’
High :
(CZ-RTC4), (CZ-RTC5B, CZ-RTC6*)
Medium :
(CZ-RTC4), (CZ-RTC5B, CZ-RTC6*)
Low :
(CZ-RTC4), (CZ-RTC5B, CZ-RTC6*)
If your air conditioner does not work properly even after checking each item of
“Before Requesting Services” and “Troubleshooting”
• Stop the operation immediately and turn the power off. Then contact your dealer and report the
serial number and symptom. You also report if the inspection mark and the letters E, F, H, L, P in
combination with numbers appear on the LCD of the remote controller.
• Never repair the air conditioner by yourself since it is very dangerous for you to do so.
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