Daikin ATXM20A2V1B User Reference Manual page 54

9 | Troubleshooting
User reference guide
54
Malfunction
The flaps do NOT start to
swing immediately.
Operation does NOT start
soon.
The system operates, but
cooling or heating is
insufficient.
The system operates, but
heating is insufficient (air is
NOT blown from the unit).
The ON/OFF timer does
NOT operate according to
the settings.
Cooling operation CANNOT
be selected.
An abnormal function
happens during operation.
Measure
The indoor unit is adjusting the position of the flaps.
The flaps will start moving soon.
In case the ON/OFF button was pressed right after
operation was stopped or if the mode was changed.
Operation will start after 3 minutes to protect the
system.
▪ Check the airflow rate setting. Refer to
4
"6.4 Airflow rate" [ 24].
▪ Check the temperature setting. Refer to
start/stop operation mode and to set the
4
temperature" [ 23].
▪ Check if the airflow
appropriate. Refer to
▪ Check if the air inlet or outlet of the outdoor or
indoor unit is NOT blocked by obstacles. Remove
any obstacles and make sure the air can flow
freely.
▪ Check if the air filters are clogged. Clean the air
filters. See "8 Maintenance and
▪ Check for open doors or windows. Close doors and
windows to prevent wind from coming in.
▪ Check if the unit operates in Econo or Outdoor
unit quiet operation. Refer to
Outdoor unit quiet operation" [
▪ Check if there is any furniture directly under or
next to the indoor unit. Move the furniture.
▪ The air conditioner may be warming up for heating
operation. Wait for 1 to 4 minutes.
▪ If a flowing sound is heard, the outdoor unit may
be in defrost operation. Wait for 4 to 12 minutes.
▪ Check if the Weekly timer and ON/OFF timer are
set to the same time. Change or deactivate the
setting. Refer to
4
operation" [ 30] and
4
operation" [ 33].
▪ Check if the clock and the day of the week are set
correctly. Refer to "5.4 The clock
Check if your system is NOT heating only version.
The air conditioner may malfunction because of
lightning or radio waves. Turn the breaker OFF and
back ON.
"6.3.1 To
direction setting
4
"6.5 Airflow direction" [
4
service" [ 46].
"6.8 Econo and
4 28].
"6.10 OFF/ON
"6.11 Weekly timer
4
setting" [ 19].
Daikin room air conditioner
4P518786-13K – 2023.06
is
24].
timer
ATXM-A