Test Run; Before Test Run; Auto Restart Function - Mitsubishi Electric Mr.Slim SLZ-KA25 Para El Instalador

10.Test run

10.1. Before test run

s After installation of indoor and outdoor units, and piping and electric wiring
work, recheck 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 MΩ Ω Ω Ω Ω .
SLP-2AL (For SLZ-KA25/KA35/KA50VAL)
Fig. 10-1
F E D B
TEST RUN
C COOL, HEAT
˚C
˚C
TEMP.
MENU ON/OFF
BACK MONITOR/SET DAY
PAR-21MAA CLOCK OPERATION
H G
Fig. 10-2
B E D
˚C
˚C
TEMP.
C
MENU ON/OFF
BACK MONITOR/SET DAY
PAR-21MAA CLOCK OPERATION
Fig. 10-3
C A B
A Emergency operation switch (heating)
B Emergency operation switch (cooling)
C Operation lamp
A ON/OFF button
B Test run display
C Indoor temperature liquid line
temperature display
D ON/OFF lamp
SIMPLE
E Power display
ON/OFF
A
F Error code display
FILTER
Test run remaining time dis-
CHECK TEST
play
CLEAR
G Set temperature button
H Mode selection button
I Fan speed button
M TEST button
I M
A CHECK button
B Refrigerant address
C TEMP. button
D IC:
Indoor unit
OC: Outdoor unit
SIMPLE
E Check code
ON/OFF
FILTER
CHECK TEST
CLEAR
A

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.
Set the AUTO RESTART FUNCTION using the DIP switch of the indoor controller
board.
DIP switch SW3-1 ON: Available
DIP switch SW3-1 OFF: Not available
10.3. Test run
10.3.1. For wireless remote controller (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 MΩ.
• 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
button B for more than 3 seconds to start the cooling operation.
1 Press the
If the operation lamp C blinks every 0.5 seconds, inspect the indoor/outdoor
connecting wire for miswiring.
• Check that the vanes operate properly when cool air is blown out.
2 Press it once more, and the operation stops.
button A for more than 3 seconds to start the heating operation.
3 Press the
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.
10.3.2. Wired remote controller (Fig. 10-2)
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 opera-
tion manual for the indoor unit.
10.4. Self-check
10.4.1. Wired remote controller (Fig. 10-3)
1 Turn on the power.
2 Press the [CHECK] button twice.
3 Set refrigerant address with [TEMP] button if system control is used.
4 Press the [ON/OFF] button to stop the self-check.
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