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Airfl ow is weak or stops.
□ <In the Heating mode> Is [ ] indicator blinking?
In this case, the Automatic defrosting operation is working. The in-
door unit stops for a maximum of 15 minutes. (Refer to page 12.)
□ <In the Dry mode> The indoor unit operates at a low fan speed to
adjust the room humidity, and may stop from time to time.
□ <In the Auto mode> While the monitoring operation, the fan rotates
at a very low speed.
Noise is heard.
□ Is the unit operating, or immediate after stopping operation?
In this case, refrigerant fl owing 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 12.)
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 12.)
Outdoor unit emits water.
□ <In the Heating mode> The outdoor unit may emit water gener-
ated by the Automatic defrosting operation. (Refer to page 12.)
The unit operates diff erently from the remote controller setting.
□ Are the batteries in the remote controller exhausted?
⇒ Replace the batteries.
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.
The mobile app does not work.
□ Check that the version of the OS on your smartphone is sup-
ported.
⇒ Refer to "App Store" or "Google Play".
I have not received the e-mail when registering my account.
□ Set the domain permissions so that it is not rejected as spam.
The method of registering additional air conditioners is unclear.
□ To register additional air conditioners, repeat the setup of the
chosen mode in "9.2. Setting to use WLAN control" for each air
conditioner.
Wireless LAN setup is not possible.
□ Check that your access point supports "WPS function." (Button
mode)
□ Check if there was any previous owner using this wireless LAN
control. If there was a previous owner, contact authorized service
personnel.
Wireless LAN setup is not possible. (The connection settings of
the WLAN adapter and access point are not complete)
□ Check that your access point supports "IEEE 802.11 b/g/n".
(Check with the operation manual of the access point.)
□ Check that the power to the indoor unit is on.
I am not able to operate this product from the mobile app.
□ Check that the power to the indoor unit is on.
□ Check that the power to the access point is on.
□ Check that your smartphone is not in fl ight mode.
□ Check that you are not in a place where it is diffi cult to make a
connection with radio waves.
Immediately stop operation and turn off the electrical breaker in
the following cases. Then consult authorized service personnel.
• The problem persists even if you perform these checks or
diagnostics.
• On the indoor unit, [ ] and [
NOTE: For any troubleshooting related to the WLAN control, refer to the
mobile app.
State of indicator lamps
: The instruction is relating to the WLAN control.
Lighting pattern:
State
Causes and solutions
Automatic defrosting operation
⇒ Wait until fi nishing the defrosting
(maximum of 15 minutes).
Filter indicator
⇒ Clean the air fi lter and reset the fi lter
sign.
(3 times)
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
service personnel only)
⇒ Press
The power to the access point is
not on.
⇒ Check that the power to the access
point is on.
(Slow)
There is a possibility that the WLAN
adapter is not properly connected
to the access point.
⇒ Disconnect the power supply to the
air conditioner (via breaker or plug),
and then re-connect.
The software of the WLAN adapter
is being updated.
During the air conditioner registration
(pairing of WLAN adapter)
Restricted function
Manual Auto operation and Filter indicator
reset
You can operate the air conditioner with
Status
Time to keep pressing
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.
] blink while [
] is blinking fast.
Blinking,
Any state (on or off )
to quit the test run.
on the indoor unit.
Mode or operation
Stop
Filter indicator reset
1)
Auto *
Forced cooling
2)
)
on the remote
See
page
12
12
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12
3
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9
12
En-14
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