En-13
■
State of indicator lamps
Lighting pattern: O, On, Blinking, Any state
State Causes and solutions
See
page
Automatic defrosting operation
⇒
Wait until nishing the defrosting
(maximum of 15 minutes).
11
Filter indicator
⇒
Clean the air lter and reset the lter
sign.
11
Demand response operation
8
Error code display
⇒
Consult authorized service personnel.
-
Timer setting error because of Auto restart
⇒
Reset the clock and timer settings.
11
Test run operation (for authorized
personnel only)
⇒
Press
to quit the test run.
3
Restricted function
11
(In the multi-split connection) Standby
mode
⇒
Check the set operation mode of the
indoor units.
12
■
Manual Auto operation and Filter indicator
reset
You can operate the air conditioner with on the
indoor unit.
Status Length of pressing down Mode or operation
In operation More than 3 seconds Stop
Stopping 2 seconds or less Filter indicator reset
More than 3 seconds and
less than 10 seconds
Auto *
1)
More than 10 seconds
(Only for servicing.*
2)
)
Forced cooling
*1) In the multi-split connection, the operation mode follows the other
indoor units.
*2) To stop the forced cooling, press this button or
on the remote
controller
(3 times)
(Twice)
(Fast)
(Slow)
Noise is heard.
□ Is the unit operating, or immediate after stopping operation?
In this case, refrigerant 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 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 dierently 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 O 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 o 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 [ ] blink while [ ] is blinking fast.
9387602449-01_OM_En_ASTH18KMTD.indd 139387602449-01_OM_En_ASTH18KMTD.indd 13 2023/05/16 18:07:012023/05/16 18:07:01
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