Mitsubishi Electric SLZ-KA25 Installation Manual page 14

9. Test run
Step 4 Confirm the operation of the outdoor unit fan.
The speed of the outdoor unit fan is controlled in order to control the performance of the unit. Depending on the ambient air, the fan will rotate at a slow speed and will keep
rotating at that speed unless the performance is insufficient. Therefore, the outdoor wind may cause the fan to stop rotating or to rotate in the opposite direction, but this is
not a problem.
Step 5 Stop the test run.
1 Press the [ON/OFF] button to stop the test run. (The Test run menu will appear.)
Note: If an error is displayed on the remote controller, see the table below.
LCD Description of malfunction
P1 Intake sensor error
P2 Pipe sensor error (liquid pipe)
Drain float switch connector disconnected
P4
(CN4F)
P5 Drain overflow protection operation
Freezing/overheating protection
P6
operation
P8 Pipe temperature error
See the table below for the details of the LED display (LED 1, 2, and 3) on the indoor controller board.
LED1 (microcomputer power supply)
LED2 (remote controller power supply)
LED3 (indoor/outdoor unit communication)
h
ON/OFF
TOO TOO
WARM COOL
The OPERATION INDICATOR
lamp comes on regardless of
the remote controller display.
Fig. 9-6
14
LCD Description of malfunction
P9 Pipe sensor error (dual-wall pipe)
PA Leakage error (refrigerant system)
PL Refrigerant circuit abnormal
FB Indoor controller board error
U*, F*
(* indicates an Outdoor unit malfunction
alphanumeric Refer to the wiring diagram for the
character outdoor unit.
excluding FB.)
Indicates whether control power is supplied. Make sure that this LED is always lit.
Indicates whether power is supplied to the wired remote controller. The LED is lit only for the indoor unit that is
connected to the outdoor unit that has an address of 0.
Indicates whether the indoor and outdoor units are communicating. Make sure that this LED is always blinking.
OPERATION INDICATOR lamp
LCD
E0 ~ E5
E6 ~ EF
9.3. Self-check
9.3.1. Wired remote controller
■
Refer to the installation manual that comes with each remote controller for de-
tails.
9.3.2. Wireless remote controller [SLZ-KA·VAL3 only] (Fig. 9-6)
1 Turn ON the power.
2 While pressing both the MODE SELECT button and TOO COOL button on the
remote controller at the same time, press the RESET button.
3 Release the RESET button.
4 Release the other two buttons. After three seconds, all items in the LCD are
displayed.
5 Transmit the signal of remote controller by pressing the OPERATE/STOP (ON/OFF)
button on the remote controller.
(The above procedure allows OPERATION INDICATOR lamp to indicate the
failure-mode.)
6 Transmit the signal of remote controller by pressing the OPERATE/STOP (ON/OFF)
button to stop the self-check.
Description of malfunction
Communication error between the
remote controller and the indoor unit
Communication error between the
indoor unit and the outdoor unit