Symptoms That Are Not System Malfunctions; Symptom: A Sound Like Water Flowing Is Heard; Symptom: A Blowing Sound Is Heard; Symptom: A Ticking Sound Is Heard - Daikin FTXF20A5V1B Operation Manual

7 Troubleshooting
Malfunction
If a safety device such as a fuse, a
breaker or an earth leakage breaker
frequently actuates or the ON/OFF
switch does NOT properly work.
If water leaks from the unit.
The operation switch does NOT work
well.
If the user interface display indicates the
unit number, the operation lamp flashes
and the malfunction code appears.
If the system does NOT operate properly except for the above
mentioned cases and none of the above mentioned malfunctions is
evident, investigate the system according to the following
procedures.
Malfunction
If the system does ▪ Check if there is no power failure. Wait
NOT operate at all. until power is restored. If a power failure
occurs during operation, the system
automatically restarts immediately after
power is restored.
▪ Check if no fuse has blown or breaker is
activated. Change the fuse or reset the
breaker if necessary.
▪ Check the batteries of the user interface.
The system suddenly ▪ Check if the air inlet or outlet of the
stops operating. outdoor or indoor unit is NOT blocked by
obstacles. Remove any obstacles and
make sure the air can flow freely.
▪ The air conditioner may stop operating
after sudden large voltage fluctuations to
protect the system. It automatically
resumes operation after about 3 minutes.
The system operates, ▪ Check the airflow rate setting. Refer to
but cooling or heating "4.3.2 Airflow
is insufficient.
▪ Check the temperature setting. Refer to
"4.3.1 To start/stop operation mode and
to set the temperature" [ 4 5].
▪ Check if the airflow direction setting is
appropriate. Refer to
direction" [ 4 6].
▪ 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 system operates, ▪ The air conditioner may be warming up
but cooling or heating for heating operation. Wait for 1 to 4
is insufficient (air is minutes.
NOT blown from the
▪ The unit may be in defrost operation.
unit).
The system operates, ▪ Check if the air filters are clogged. Clean
but cooling or heating the air filters. See
service" [ 4 8].
is insufficient (air is
blown from the unit).
▪ Check for open doors or windows. Close
doors and windows to prevent wind from
coming in.
▪ Check if the unit operates in Econo
operation.
operation" [ 4 7].
▪ Check if there is any furniture directly
under or next to the indoor unit. Move the
furniture.
Operation manual
10
Measure
Turn OFF the main power An abnormal function
switch. happens during
operation.
The unit does NOT
Stop the operation. receive signals from
the user interface.
Turn OFF the power
supply.
Notify your installer and
report the malfunction
code.
The user interface
display is blank.
An error code is
displayed on the user
interface.
Measure
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).
7.1
The following symptoms are NOT system malfunctions:
7.1.1
▪ This sound is caused by the refrigerant flowing in the unit.
▪ This sound may be generated when water is flowing away from
the unit during cooling or drying operation.
rate" [ 4 5].
7.1.2
This sound is generated when the direction of the refrigerant flow is
changed (e.g. when switching from cooling to heating).
"4.3.3 Airflow
7.1.3
This sound is generated when the unit slightly expands or contracts
with changes in temperature.
7.1.4
This sound is generated by the refrigerant flowing during defrost
operation.
7.1.5
"6 Maintenance and
This sound is generated when the refrigerant control valves or
electrical parts operate.
7.1.6
This sound is generated when an external device sucks air out of the
room (e.g. exhaust fan, extractor hood) while the doors and windows
Refer to "4.3.6 Econo
in the room are closed. Open the doors or windows, or turn off the
device.
Malfunction Measure
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
"7.2 Solving problems based on error
codes" [ 4 11] 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.
Symptoms that are NOT system
malfunctions
Symptom: A sound like water flowing is
heard

Symptom: A blowing sound is heard

Symptom: A ticking sound is heard

Symptom: A whistling sound is heard

Symptom: A clicking sound during
operation or idle time is heard

Symptom: A clapping sound is heard

FTXF20~35A5V1B + FTXF20~25B5V1B
Daikin room air conditioner
3P520336-3E – 2019.09