Maintenance And Service; Maintenance Before A Long Stop Period; Maintenance After A Long Stop Period - Daikin LREN10A Y1B Series Installer's Reference Manual

8 Maintenance and service

8.1 Maintenance before a long stop period

8.2 Maintenance after a long stop period

LREN8~12A + LRNUN5A
CO₂ ZEAS outdoor unit and capacity up unit
4P704142-1C – 2024.12
WARNING
NEVER replace a fuse with a fuse of a wrong ampere ratings or other wires when a
fuse blows out. Use of wire or copper wire may cause the unit to break down or
cause a fire.
CAUTION: Pay attention to the fan!
It is dangerous to inspect the unit while the fan is running.
Make sure to turn OFF the main switch before executing any maintenance task.
CAUTION
Do NOT insert fingers, rods or other objects into the air inlet or outlet. Do NOT
remove the fan guard. When the fan is rotating at high speed, it will cause injury.
CAUTION
After a long use, check the unit stand and fitting for damage. If damaged, the unit
may fall and result in injury.
NOTICE
NEVER inspect or service the unit by yourself. Ask a qualified service person to
perform this work.
NOTICE
Do NOT wipe the controller operation panel with benzine, thinner, chemical dust
cloth, etc. The panel may get discoloured or the coating peeled off. If it is heavily
dirty, soak a cloth in water-diluted neutral detergent, squeeze it well and wipe the
panel clean. Wipe it with another dry cloth.
E.g., at the end of the season.
▪ Turn off the power. The user interface display disappears.
WARNING
When turning the power OFF for a long stop period, ALWAYS remove the refrigerant
from the units. If you cannot remove the refrigerant for any reason, ALWAYS keep
the power turned ON.
▪ Clean the showcases and blower coils. Respect the maintenance tips and
procedures for cleaning in the installation/operation manuals of the indoor units.
E.g., at the beginning of the season.
▪ Check and remove everything that might be blocking inlet and outlet vents of
indoor units and outdoor units.
8 Maintenance and service
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Installer and user reference guide
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