Operation Range; Operation Procedure - Daikin FXMQ125NFRV16 Operation Manual

Display " " (time to clean air filter)
When this display shows, it is the time to clean air
filter.
Display " (defrost/hot start)
"
Refer to the chapter "OPERATION PROCEDURE
- EXPLANATION OF HEATING OPERATION."
Timer mode start/stop button
Refer to the chapter "OPERATION PROCE-
DURE - PROGRAMMING START AND STOP
OF THE SYSTEM WITH TIMER."
Timer on/off button
Refer to the chapter "OPERATION PROCE-
DURE - PROGRAMMING START AND STOP
OF THE SYSTEM WITH TIMER."
Inspection/test operation button
This button is only used by qualified service per-
sons for maintenance purposes.
Programming time button
Use this button for programming start and/or stop
time.
Filter sign reset button
Refer to the chapter "MAINTENANCE".
Operation mode selector button
Press this button to select the operation mode of
your preference.
NOTE
• In contradistinction to actual operating situations,
the display on figure 2 shows all possible indica-
tions.
• If the display " " (time to clean air filter) shows,
clean the air filter as explained in the chapter
"MAINTENANCE". After cleaning and reinstalling
the air filter, press the filter sign reset button on
the remote controller. The filter sign lamp on the
display will go out.
• This operation manual is for the Outdoor-Air Pro-
cessing Unit.
See the outdoor unit's operation manual for
details on the indoor unit for room air conditioning.

4. OPERATION RANGE

Use the system in the following temperature and
humidity ranges for safe and effective operation.
COOLING
OUTDOOR TEMPERATURE
TEMPERATURE
19 to 43
30% to 90%
D
(Note)
(Long time operation in a humidity over
90% may cause condensation on the unit
W
32 or below
and dripping.)
DB: Dry bulb temperature
WB: Wet bulb temperature
NOTE
HEATING
DB: Dry bulb temperature
NOTE
If the temperature or the humidity is beyond these
conditions, safety devices may work and the unit
may not operate.

5. OPERATION PROCEDURE

5-1 COOLING, HEATING, AUTOMATIC, AND
[°C]
HUMIDITY
• The FAN OPERATION mode is set automatically
for DB temperature of 19°C and below.
• Do not use the COOLING OPERATION or FAN
OPERATION modes when outdoor temperature
is 5°C or lower. The unit will stop running to pro-
tect itself against cold damage. In such case, set
the AUTOMATIC OPERATION or HEATING
OPERATION mode.
[°C]
OUTDOOR
TEMPERATURE
–5 to 15
D
(Note)
• The FAN OPERATION mode is set automatically
for DB temperature of 15°C and above.
• To protect the unit, turn on the power supply
6 hours before operation.
• If the power supply is turned off during operation,
operation will restart automatically after the power
turns back on again.
• This unit cannot control room temperature.
If room temperature control is needed, install it
together with the indoor unit for room air condi-
tioning.
• This unit is designed to operate so that the tem-
perature of the outlet air is as close as possible to
the set temperature.
This may not be possible, however, due to the out-
door air temperature.
When shipped from the factory, the set tempera-
ture is set at 18°C for cooling and 25°C for heating.
The set temperature can be changed between 13
and 25°C for cooling / 18 and 30°C for heating by
local setting from remote controller. About set tem-
perature or how to change it, ask your dealer.
The set temperature will not be displayed on the
remote controller.
FAN ONLY OPERATION
(Refer to figure 3)
• Changeover cannot be made with a remote con-
troller whose display shows "
(changeover under control).
• When the display "
control) flashes, refer to the chapter "5-3 SET-
TING THE MASTER REMOTE CONTROLLER".
"
" (changeover under