Daikin VRV system FXMQ200AXVMB, Installation And Operation Manual

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7 Maintenance and service
Installation and operation manual
9
FXMQ-A
VRV system air conditioner
3P701545-1 – 2022.07
6.2 About operation modes
INFORMATION
Depending on the installed system, some operation modes
will not be available.
▪ The air flow rate may adjust itself depending on the room
temperature or the fan may stop immediately. This is not a
malfunction.
▪ If the main power supply is turned off during operation, operation
will restart automatically after the power turns back on again.
▪ Setpoint. Target temperature for the Cooling, Heating, and Auto
operation modes.
▪ Setback. A function that keeps the room temperature in a specific
range when the system is turned off (by the user, the schedule
function, or the OFF timer).
6.2.1 Basic operation modes
The indoor unit can operate in various operation modes.
Icon Operation mode
Cooling. In this mode, cooling will be activated as
required by the setpoint, or by Setback operation.
Heating . In this mode, heating will be activated as
required by the setpoint, or by Setback operation.
Fan only. In this mode, air circulates without heating
or cooling.
Auto. In Auto mode, the indoor unit automatically
switches between heating and cooling mode, as
required by the setpoint.
6.2.2 Special heating operation modes
Operation Description
Defrost To prevent a loss of heating capacity due to frost
accumulation in the outdoor unit, the system will
automatically switch to defrost operation.
During defrost operation, the indoor unit fan will stop
operation, and the following icon will appear on the
home screen:
The system will resume normal operation after
approximately 6 to 8 minutes.
Hot start During hot start, the indoor unit fan will stop
operation, and the following icon will appear on the
home screen:
6.3 To operate the system
INFORMATION
For setting of the operation mode or other settings, see the
reference guide or operation manual of the user interface.
7 Maintenance and service
7.1 Precautions for maintenance and
service
CAUTION
See "3 User safety instructions" [
4
5] to acknowledge all
related safety instructions.
NOTICE
NEVER inspect or service the unit by yourself. Ask a
qualified service person to perform this work. However, as
end user, you may clean the air filter and air outlet.
NOTICE
Maintenance MUST be done by an authorised installer or
service agent.
We recommend performing maintenance at least once a
year. However, applicable legislation might require shorter
maintenance intervals.
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.
Following symbols may occur on the indoor unit:
Symbol Explanation
Measure the voltage at the terminals of main circuit
capacitors or electrical components before servicing.
DANGER: RISK OF ELECTROCUTION
Disconnect the power supply for more than 10 minutes,
and measure the voltage at the terminals of main circuit
capacitors or electrical components before servicing. The
voltage MUST be less than 50 V DC before you can touch
electrical components. For the location of the terminals,
see the warning label for persons performing service and
maintenance.
a b c
C+
C-
a
a Residual voltage measuring points (C-, C+)
b Printed circuit board
c Control box
7.2 Cleaning the air filter and air outlet
CAUTION
Turn off the unit before cleaning the air filter and air outlet.