Daikin CO2 Conveni-pack LRYEN10A7Y1 Installer And User Reference Manual page 33

LRYEN10A7Y1+LRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit
4P605460-1 – 2020.08
Malfunction
The system operates but
cooling or heating is
insufficient.
(for air conditioner indoor
units)
The system operates but
cooling is insufficient.
(for refrigerator and freezer
indoor units)
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 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 not clogged (refer to
"Maintenance" in the indoor unit manual).
▪ Check the temperature setting.
▪ Check the fan speed setting on your user
interface.
▪ Check for open doors or windows. Close doors and
windows to prevent wind from coming in.
▪ Check if there are too many occupants in the room
during cooling operation. Check if the heat source
of the room is excessive.
▪ Check if direct sunlight enters the room. Use
curtains or blinds.
▪ Check if the air flow angle is proper.
▪ 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 indoor unit is not frosted up. Defrost
the unit manually, or shorten the defrost
operation cycle.
▪ Check if there are not too many articles inside the
room/showcase. Remove a couple of articles.
▪ Check if there is smooth air circulation inside the
room/showcase. Reorganise the articles inside the
room/showcase.
▪ Check if there is not too much dust on the outdoor
unit heat exchanger. Remove the dust with a
brush or vacuum cleaner, without using water. If
necessary, consult your dealer.
▪ Check if there is cold air leaking outside of the
room/showcase. Stop the air from leaking outside.
▪ Check if you did not set the indoor unit setpoint
temperature too
appropriately.
▪ Check if there are no high-temperature articles
stored in the room/showcase. Always store
articles after they have cooled down.
▪ Check if the door is not opened too long. Reduce
the opening time of the door.
10 Troubleshooting
|
high. Set the setpoint
Installer and user reference guide
33