Available Comfort Settings; 18 Maintenance And Service; Maintenance After A Long Stop Period; Maintenance Before A Long Stop Period - Daikin RXYTQ8T7YF Installer And User Manual

idea, the system automatically starts increasing its refrigerant
temperature, automatically reducing the delivered capacity and
increasing the system's efficiency.
Hi-sensible/economic (cooling/heating)
The refrigerant temperature is set higher/lower (cooling/heating)
compared to basic operation. The focus under high sensible mode is
comfort feeling for the customer.
The selection method of indoor units is important and has to be
considered as the available capacity is not the same as under basic
operation.
For details concerning to Hi-sensible applications, please contact
your installer.
17.2

Available comfort settings

For each of above modes a comfort level can be selected. The
comfort level is related to the timing and the effort (energy
consumption) which is put in achieving a certain room temperature
by temporarily changing the refrigerant temperature to different
values in order to achieve requested conditions more quickly.
▪ Powerful
▪ Quick
▪ Mild
▪ Eco
INFORMATION
Combinations of Automatic mode together with Hydrobox
applications should be considered. The effect of the energy
saving function can be very small when low/high (cooling/
heating) leaving water temperatures are requested.
18 Maintenance and service
NOTICE
Never inspect or service the unit by yourself. Ask a
qualified service person to perform this work.
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
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
Pay attention to the fan.
It is dangerous to inspect the unit while the fan is running.
Be sure to turn off the main switch before executing any
maintenance task.
CAUTION
After a long use, check the unit stand and fitting for
damage. If damaged, the unit may fall and result in injury.
RXYTQ8~16T7YF
VRV IV system air conditioner
4P388989-1B – 2016.02

18 Maintenance and service

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.
18.1 Maintenance after a long stop
period
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.
▪ Clean air filters and casings of indoor units. Contact your installer
or maintenance person to clean air filters and casings of the
indoor unit. Maintenance tips and procedures for cleaning are
provided in the installation/operation manuals of dedicated indoor
units. Make sure to install cleaned air filters back in the same
position.
▪ Turn on the power at least 6 hours before operating the unit in
order to ensure smoother operation. As soon as the power is
turned on, the user interface display appears.
18.2 Maintenance before a long stop
period
E.g., at the end of the season.
▪ Let the indoor units run in fan only operation for about half a day in
order to dry the interior of the units. Refer to
cooling, heating, fan only, and automatic operation" on page 62
for details on fan only operation.
▪ Turn off the power. The user interface display disappears.
▪ Clean air filters and casings of indoor units. Contact your installer
or maintenance person to clean air filters and casings of the
indoor unit. Maintenance tips and procedures for cleaning are
provided in the installation/operation manuals of dedicated indoor
units. Make sure to install cleaned air filters back in the same
position.
18.3

About the refrigerant

This product contains fluorinated greenhouse gases. Do NOT vent
gases into the atmosphere.
Refrigerant type: R410A
Global warming potential (GWP) value: 2087.5
NOTICE
In Europe, the greenhouse gas emissions of the total
refrigerant charge in the system (expressed as tonnes
CO -equivalent) is used to determine the maintenance
2
intervals. Follow the applicable legislation.
Formula to calculate the greenhouse gas emissions:
GWP value of the refrigerant × Total refrigerant charge [in
kg] / 1000
Please contact your installer for more information.
"16.2.2 About
Installer and user reference guide
65