Energy Saving And Optimum Operation; Maintenance; Maintenance After A Long Stop Period; Maintenance Before A Long Stop Period - Daikin ERQ Service Manual

■ The heating capacity drops when the outside
NOTE
temperature falls. If this happens, use another
heating device together with the unit. (When using
together with appliances that produce open fire,
ventilate the room constantly.)
Do not place appliances that produce open fire in
places exposed to the air flow from the unit or
under the unit.
■
It takes some time to heat up the room from the
time the unit is started since the unit uses a hot-air
circulating system to heat the entire room.
■ If the hot air rises to the ceiling, leaving the area
above the floor cold, we recommend that you use
the circulator (the indoor fan for circulating air).
Contact your dealer for details.
8. E
NERGY SAVING AND OPTIMUM OPERATION
Observe the following precautions to ensure the system operates
properly.
■ Adjust the air outlet properly and avoid direct air flow to room
inhabitants.
■
Adjust the room temperature properly for a comfortable
environment. Avoid excessive heating or cooling.
■
Prevent direct sunlight from entering a room during cooling
operation by using curtains or blinds.
■ Ventilate often.
Extended use requires special attention to ventilation.
■ Keep doors and windows closed. If the doors and windows
remain open, air will flow out of your room causing a decrease in
the cooling or heating effect.
■
Be careful not to cool or heat too much. To save energy, keep
the temperature setting at a moderate level.
Recommended temperature setting
For cooling
For heating
■
Never place objects near the air inlet or the air outlet of the unit.
It may cause deterioration in the effect or stop the operation.
■
Turn off the main power supply switch to the unit when the unit is
not used for longer periods of time. If the switch is on, it uses
electricity. Before restarting the unit, turn on the main power
supply switch 6 hours before operation to ensure smooth
running. (Refer to "Maintenance" in the air handling unit
manual.)
■ Keep the air handling unit and remote control at least 1 m away
from televisions, radios, stereos, and other similar equipment.
Failing to do so may cause static or distorted pictures.
■
Do not place items under the air handling unit which may be
damaged by water.
Condensation may form if the humidity is above 80% or if the
drain outlet gets blocked.
ERQ100~140A7V1B + ERQ125~250A7W1B
Inverter condensing unit
4PW51322-1
9.
9.1.
■ Check and remove everything that might be blocking inlet and
outlet vents of air handling units and outdoor units.
■ Clean air filters and casings of air handling units. Refer to the
operation manual supplied with the air handling units for details
on how to proceed and 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 remote controller displays appear.
9.2.
■
Let the air handling units run in fan only operation for about half
a day in order to dry the interior of the units. Refer to
"7.1. Cooling, heating, and fan only operation" on page 144 for
details on fan only operation.
■ Turn off the power. The remote controller displays disappear.
■ Clean air filters and casings of air handling units. Refer to the
operation manual supplied with the air handling units for details
on how to proceed and make sure to install cleaned air filters
back in the same position.
10. F
26~28°C
20~24°C
Symptom 1: The system does not operate
■
The air conditioner does not start immediately after the ON/OFF
button on the remote controller is pushed or T1/T2 is closed.
If the operation lamp lights, the system is in normal condition.
To prevent overloading of the compressor motor, the air
conditioner starts 5 minutes after it is turned ON again in case it
was turned OFF just before. The same starting delay occurs
after the operation mode selector button was used.
■ If "Centralized Control" is displayed on the remote control and
pressing the operation button causes the display to blink for a
few seconds.
This indicates that the central device is controlling the unit.
The blinking display indicates that the remote control cannot be
used.
■
The system does not start immediately after the power supply is
turned on.
Wait one minute until the micro computer is prepared for
operation.
Symptom 2: Cool/Heat cannot be changed over
■
When
centralized control), it shows that this is a slave remote
controller.
■ When the cool/heat changeover remote control switch is
installed and the display shows "
This is because cool/heat changeover is controlled by the cool/
heat changeover remote control switch. Ask your dealer where
the remote control switch is installed.
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M
AINTENANCE
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 and to remove the fuses
from the control circuit located in the outdoor unit.

Maintenance after a long stop period

beginning of the season)

Maintenance before a long stop period

end of the season)
OLLOWING SYMPTOMS ARE NOT AIR
CONDITIONER TROUBLES
the display shows "
(e.g. at the
(e.g. at the
" (change-over under
".
Operation manual
145