Daikin FXMA50A5VEB, Инструкция по установке и эксплуатации, Страница: 38 / 88

11 | Troubleshooting
Installer and user reference guide
38
FXMA-A
VRV system air conditioner
4P680920-1 – 2022.01
Malfunction Measure
The system operates but
cooling or heating is
insufficient. ▪ Check if air inlet or outlet of outdoor or indoor
unit is not blocked by obstacles. Remove any
obstacles and make sure the air can flow freely.
▪ Check if the air filter is clogged (see "10.2.1 To
clean the air filter" [
4
32]).
▪ Check the temperature setting. Refer to the
manual of the user interface.
▪ Check if the fan speed setting is set to low speed.
Refer to the manual of the user interface.
▪ Check for open doors or windows. Close doors and
windows to prevent wind from coming in.
▪ Check if direct sunlight enters the room. Use
curtains or blinds.
▪ Check if there are too many occupants in the room
during cooling operation. Check if the heat source
of the room is excessive.
▪ If the heat source of the room is excessive (when
cooling). Cooling effect decreases if heat gain of
the room is too large.
Operation stops suddenly.
(Operation lamp blinks.) ▪ Check if the air filter is clogged (see "10.2.1 To
clean the air filter" [
4
32]).
▪ Check if air inlet or outlet of outdoor or indoor
unit is not blocked by obstacles. Remove any
obstacles, turn the breaker OFF and back ON. If
the lamp still blinks, contact your dealer.
An abnormal function
happens during operation. ▪ The air conditioner may malfunction because of
lightning or radio waves. Turn the breaker OFF and
back ON.
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).
11.1 Symptoms that are NOT system malfunctions
The following symptoms are NOT system malfunctions:
11.1.1 Symptom: The system does not operate
▪ The air conditioner does not start immediately after the ON/OFF button on the
user interface is pressed. If the operation lamp lights, the system is in normal
condition. To prevent overloading of the compressor motor, the air conditioner
starts 5 minutes after it is turned ON again in case it was turned OFF just before.
The same starting delay occurs after the operation mode selector button was
used.
▪ The system does not start immediately after the power supply is turned on. Wait
one minute until the micro computer is prepared for operation.