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Noise is heard.
□ Is the unit operating, or immediate after stopping operation?
In this case, refrigerant flowing sound may be heard. It may be
particularly noticeable for 2-3 minutes after starting operation.
□ Do you hear a slight squeaking sound during the operation?
This sound is produced by the minute expansion and contraction
of the front panel caused by temperature change.
□ <In the Heating mode> Do you hear a sizzling sound?
This sound is produced by the Automatic defrosting operation.
(Refer to page 11.)
Smell coming from the unit.
□ The air conditioner may absorb various smells generated from
interior textile, furniture, or cigarette smoke. These smells may be
emitted during the operation.
Mist or steam is emitted from the unit.
□ <In the Cooling or Dry mode> A thin mist may be generated by
condensation formed with sudden cooling process.
□ <In the Heating mode> Is [ ] indicator on the indoor unit blinking?
In this case, steam may rise from the outdoor unit because of the
Automatic defrosting operation.(Refer to page 11.)
Outdoor unit emits water.
□ <In the Heating mode> The outdoor unit may emit water gener-
ated by the Automatic defrosting operation. (Refer to page 11.)
The unit operates differently from the remote controller setting.
□ Do you have an arrangement with your electric company for
Demand Response?
In this case, the air conditioning performance may become lower
or the operation may stop. (Refer to page 8.)
□ Are the batteries in the remote controller exhausted?
⇒ Replace the batteries.
□ Do you use the group control?
In this case, if the Energy saving program (Occupancy sensor) on
the wireless remote controller is activated, you cannot operate the
air conditioner by the wireless remote controller.
⇒ Deactivate the Energy saving program. (Refer to page 7.)
Operation is delayed after restart.
□ Has the power supply turned from Off to On suddenly?
In this case, the compressor will not operate for about 3 minutes
to prevent a blowout of the fuse.
Immediately stop operation and turn off the electrical breaker in
following cases. Then consult authorized service personnel.
• The problem persists even if you perform these checks or
diagnostics.
• On the indoor unit, [ ] and [
En-13
] blink while [
] is blinking fast.
■ State of indicator lamps
Lighting pattern:
Off,
On,
State
Causes and solutions
Automatic defrosting operation
⇒ Wait until finishing the defrosting
(maximum of 15 minutes).
Filter indicator
⇒ Clean the air filter and reset the filter
sign.
(3 times)
Demand response operation
(Twice)
Error code display
⇒ Consult authorized service personnel.
(Fast)
Timer setting error because of Auto restart
⇒ Reset the clock and timer settings.
Test run operation (for authorized
personnel only)
⇒ Press
Restricted function
(In the multi-split connection) Standby
mode
⇒ Check the set operation mode of the
(Slow)
indoor units.
■ Manual Auto operation and Filter indicator
reset
You can operate the air conditioner with
indoor unit.
Status
Length of pressing down Mode or operation
In operation More than 3 seconds
Stopping
2 seconds or less
More than 3 seconds and
less than 10 seconds
More than 10 seconds
(Only for servicing.*
*1) In the multi-split connection, the operation mode follows the other
indoor units.
*2) To stop the forced cooling, press this button or
controller
Blinking,
Any state
See
page
to quit the test run.
on the
Stop
Filter indicator reset
Auto *
1)
Forced cooling
2)
)
on the remote
11
11
8
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11
3
11
12
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