Daikin CVXM20A2V1B User Reference Manual page 52

9 | Troubleshooting
User reference guide
52
Malfunction
The system operates, but
cooling or heating is
insufficient.
The system operates, but
cooling or heating is
insufficient (air is NOT
blown from the unit).
The system operates, but
cooling or heating is
insufficient (air is blown
from the unit).
An abnormal function
happens during operation.
The unit does NOT receive
signals from the user
interface.
The user interface display is
blank or displays .
You can check the error
code by the user interface.
Other electric appliances
start to operate.
If after checking all above items, it is impossible to fix the problem yourself, contact
your installer and state the symptoms, the complete model name of the unit (with
manufacturing number if possible) and the installation date (possibly listed on the
warranty card).
Measure
▪ Check the airflow rate setting. Refer to
4
"6.4 Airflow rate" [ 23].
▪ Check the temperature setting. Refer to
stop operation mode
4
temperature" [ 22].
▪ 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.
▪ The air conditioner may be warming up for heating
operation. Wait for 1 to 4 minutes.
▪ The unit may be in defrost operation.
▪ 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 operation.
Refer to "Econo operation" [
▪ Check if there is any furniture directly next to the
indoor unit. Move the furniture.
The air conditioner may malfunction because of
lightning or radio waves. Turn the breaker OFF and
back ON.
▪ Check the batteries of the user interface.
▪ Make sure that the transmitter is NOT exposed to
direct sunlight.
▪ Check if there are any electronic starter type
fluorescent lamps in the room. Contact your
dealer.
Replace the batteries of the user interface.
Consult your local dealer. Refer to
problems based on error
check error codes and for a detailed list of error
codes.
If the user interface signals operate other electric
appliances, move the other appliances away, and
contact your dealer.
"To start/
and to set
direction setting
4
"6.5 Airflow direction" [
service" [ 4 44].
4
28].
"9.3 Solving
4
codes" [ 55] for how to
CVXM20+FVXM25~50A2V1B
Split system air conditioners
4P625990-1A – 2020.10
the
is
23].