Mitsubishi Electric SLZ-KA25VAQ Manuel D'installation page 15

9. Test run
• On wireless remote controller
The continuous buzzer sounds from receiving section of indoor unit.
Blink of operation lamp
• On wired remote controller
Check code displayed in the LCD.
• If the unit cannot be operated properly after the above test run has been performed, refer to the following table to remove the cause.
Symptom
Wired remote controller
PLEASE WAIT
PLEASE WAIT → Error code
Display messages do not appear even
when operation switch is turned ON
(operation lamp does not light up).
On the wireless remote controller with condition above, following phenomena takes place.
• No signals from the remote controller are accepted.
• OPE lamp is blinking.
• The buzzer makes a short piping sound.
Note:
Operation is not possible for about 30 seconds after cancellation of function selection. (Correct operation)
For description of each LED (LED1, 2, 3) provided on the indoor controller, refer to the following table.
LED1 (power for microcomputer)
LED2 (power for wired remote controller)
LED3 (communication between indoor and outdoor units)
SLP-2ALW (For SLZ-KA·VAL(2))
Fig. 9-5
• For about 2 minutes following power-on, operation of the
For about 2 minutes
remote controller is not possible due to system start-up.
following power-on
(Correct operation)
• Connector for the outdoor unit's protection device is not
connected.
• Reverse or open phase wiring for the outdoor unit's power
After about 2 min-
terminal block
utes has expired
following power-on
• Incorrect wiring between indoor and outdoor units (incor-
rect polarity of S1, S2, S3)
• Remote controller wire short
Indicates whether control power is supplied. Make sure that this LED is always lit.
Indicates whether power is supplied to the wired remote controller.
Indicates state of communication between the indoor and outdoor units. Make sure that this LED is
always blinking.
Cause
9.4. Check drainage
9.4.1. For wireless remote controller (Fig. 9-5)
• 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 premis-
es.
(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.
A Insert the pump end 3 to 5 cm
B Cover of water supply inlet
C About 1000 cc
9.4.2. For wired remote controller
(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) Confirm that water is being drained out through the drainage outlet, after switching
over from remote control mode to test run mode (cooling 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.
D Water
E Drain plug
F Emergency operation switch (cooling)
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