Daikin CO2 Conveni-Pack, Installer And User Reference Manual, Page: 34 / 80

11 | Troubleshooting
Installer and user reference guide
34
FXSN50~112A2VEB
CO₂ Conveni-Pack: indoor unit
4P602817-1A – 2020.05
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 "10.2.2 To
clean the air filter" [
4
29]).
▪ 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 if the air flow angle is proper. 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.
(user interface operation
lamp or display blinks)
▪ Check if the air filter is clogged (see "10.2.2 To
clean the air filter" [ 4 29]).
▪ 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 or display 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.
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 air conditioner is in
normal condition. It does not restart immediately because one of its safety
devices actuates to prevent the air conditioner from being overloaded. The air
conditioner will turn on again automatically after 3 minutes.
▪ The air conditioner does not start immediately after the power supply is turned
on. Wait 1 minute until the microcomputer is prepared for operation.