12
10.Test run
10.1. Before test run
s
After installation of indoor and outdoor units, and piping and electric wiring
work, re-check that the unit is free from leaks of refrigerant, loosened con-
nections, and incorrect polarity.
s
Measure an impedance between the power supply terminal block (L, N,
)
on the units and the ground with a 500 V Megger and check that it is equal to
or greater than 1.0 M
Ω
.
10.2. AUTO RESTART FUNCTION
Indoor controller board
This model is equipped with the AUTO RESTART FUNCTION.
When the indoor unit is controlled with the remote controller, the operation mode, set
temperature, and the fan speed are memorized by the indoor controller board. The
auto restart function sets to work the moment the power has restored after power
failure, then, the unit will restart automatically.
10.3. Test run (Fig. 10-1)
Measure an impedance between the power supply terminal block on the outdoor unit and
the ground with a 500 V Megger and check that it is equal to or greater than 1.0 M
Ω
.
• Before performing the test run, recheck for any wrong wiring.
Wrong wiring prevents normal operation or results in blown fuse disabling opera-
tion.
• The test run can be started by pressing emergency operation switch (cooling/heat-
ing). When the emergency operation switch is once pressed, the unit will start the
test run (continuous operation) for 30 minutes.
A thermostat does not work during this time. After 30 minutes the unit will start the
emergency operation at a fixed temperature setting of 24°C in cooling mode or
heating mode.
• Perform test run in the following procedure.
Procedure
1
Press the
button
B
to start the cooling operation.
If the operation lamp
C
blinks every 0.5 seconds, inspect the indoor/outdoor
connecting wire for mis-wiring.
• Check that the vanes operate properly when cool air is blown out.
2
Press it once more, and the operation stops.
3
Press the
button
A
to start the heating operation.
Check that warm air blows out.
• In starting the heating operation, indoor unit fan may not operate to prevent blowing
cool air. Please wait for a few minutes until the temperature of heat exchanger rises
and warm air blows out.
4
Press it once more, and the operation stops.
Checking the remote (infrared) signal reception
Press the ON/OFF button on the remote controller and check that an electronic sound is
heard from the indoor unit. Press the ON/OFF button again to turn the air conditioner off.
If the indoor unit is operated with the remote controller, both the test run and the
emergency operation are released by commands from the remote controller.
Once the compressor stops, the restart preventive device operates so the compres-
sor will not operate for three minutes to protect the air conditioner.
10.4. Check drainage (Fig. 10-2)
• During the test run, ensure the water is being properly drained out and that no
water is leaking from joints.
• Always check this during installation even if the unit is not required to provide cool-
ing/drying at that time.
• Similarly, check the drainage before finishing ceiling installation in a new premises.
(1) Remove the cover of the water supply inlet and add about 1000 cc of water using
a water supply pump etc. During this process, be careful not to spray water into
the drain pump mechanism.
(2) Switching on emergency operation switch (cooling) on the grille.
(3) Confirm that water is being drained out through the drainage outlet.
(4) After checking the drainage, ensure that the cover is replaced and the power
supply is isolated.
(5) After confirming the drainage system is functioning, replace the drain plug.
C A B
Fig. 10-1
F
Fig. 10-2
B
A
C
D
Fig. 9-1
9.1. Wireless remote controller (Fig. 9-1)
9.1.1. Installation area
• Area in which the remote controller is not exposed to direct sunshine.
• Area in which there is no nearby heating source.
• Area in which the remote controller is not exposed to cold (or hot) winds.
• Area in which the remote controller can be operated easily.
• Area in which the remote controller is beyond the reach of children.
9.1.2. Installation method
1
Attach the remote controller holder to the desired location using two tapping screws.
2
Place the lower end of the controller into the holder.
• The signal can travel up to approximately 7 meters (in a straight line) within 45
degrees to both right and left of the center line of the receiver.
In addition, the signal may not be received if there is interference of light of fluores-
cent lights or strong sunlight.
9. Installing the remote controller
A
Wireless remote controller (Accessory)
B
Wall
C
Remote controller holder (Accessory)
D
Fixing screw (Accessory)
A
Insert the pump end 3 to 5 cm
B
Cover of water supply inlet
C
About 1000 cc
D
Water
E
Drain plug
F
Emergency operation switch (cooling)
A
Emergency operation switch (heating)
B
Emergency operation switch (cooling)
C
Operation lamp
