Test Run; Before Test Run; Installing The Grille - Mitsubishi Electric CITY MULTI PLFY-P NCMU-E Série Manuel D'installation

6. Test run
6.1. Before test run
► After completing installation and the wiring and piping of the indoor and
outdoor units, check for refrigerant leakage, looseness in the power supply
or control wiring, wrong polarity, and no disconnection of one phase in the
supply.
► Use a 500-volt megohmmeter to check that the resistance between the power
supply terminals and ground is at least 1.0 MΩ.
Fig. 6-1
Fig. 6-

7. Installing the grille

1
2
4
Fig. 7-1
10
ON/OFF button
A
Test run display
B
Indoor temperature liquid line
C
temperature display
ON/OFF lamp
D
Power display
E
F Error code display
Test run remaining time
display
Set temperature button
G
Mode selection button
H
Fan speed button
I
TEST button
M
Insert the pump end 1-3/16 to 2 in.
A
Cover of water supply inlet
B
About 1000 cc, 1/4 gal.
C
Water
D
Drain plug
E
3
5
► Do not carry out this test on the control wiring (low voltage circuit) termi-
nals.
Warning:
Do not use the air conditioner if the insulation resistance is less than 1.0 MΩ.
6.2. Test run (Fig. 6-1)
The following 3 methods are available.
1 Turn on the power at least 12 hours before the test run.
2 Press the [TEST] button twice. ➡ "TEST RUN" liquid crystal display
3 Press the [Mode selection] button. ➡ Make sure that wind is blown out.
4 Press the [Mode selection] button and switch to the cooling (or heating) mode.
➡ Make sure that cold (or warm) wind is blown out.
5 Press the [Fan speed] button. ➡ Make sure that the wind speed is switched.
6 Check operation of the outdoor unit fan.
7 Release test run by pressing the [ON/OFF] button. ➡ Stop
8 Register a telephone number.
The telephone number of the repair shop, sales office, etc., to contact if an error
occurs can be registered in the remote controller. The telephone number will be
displayed when an error occurs. For registration procedures, refer to the operation
manual for the indoor unit.
Note:
• If an error code is displayed on the remote controller or if the air conditioner
does not operate properly, refer to the outdoor unit installation manual or
other technical materials.
• The OFF timer is set for the test run to automatically stop after 2 hours.
• During the test run, the time remaining is shown in the time display.
• During the test run, the temperature of the indoor unit refrigerant pipes is
shown in the room temperature display of the remote controller.
• When the VANE or LOUVER button is pressed, the message "NOT AVAILABLE"
may appear on the remote controller display depending on the indoor unit
model, but this is not a malfunction.
6.3. Check of drainage (Fig. 6-2)
• 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, 1/4 gal. of
water using a water supply pump etc. During this process, be careful not to spray
water into the drain pump mechanism.
(2) Confirm that water is being drained out through the drainage outlet, after switching
over from remote control mode to test run mode.
(3) After checking the drainage, ensure that the cover is replaced and the power
supply is isolated.
(4) After confirming the drainage system is functioning, replace the drain plug.
7.1. Check the grille accessories (Fig. 7-1)
• The grille should be supplied with the following accessories.
Accessory name Q'ty
Grille 1
1
Screw with washer 4
2
Gauge
1
3
Fastener 2
4
Band 2
5
Remark
650 × 650 mm, 25-19/32 × 25-19/32 inch
M5 × 0.8 × 25