Wired Remote Controller - Mitsubishi Electric PL12AK User Manual

2. SELF DIAGNOSTIC FUNCTION WITH REMOTE CONTROLLER

(WIRED REMOTE CONTROLLER)

2-1 When malfunction occurs during operation
When a malfunction occurs, the indoor and outdoor units stop and the malfunction is displayed on the LCD of the remote
controller.
(1) ON the set temperature display part, "CHECK" appears, and the unit
address and the check code are displayed alternately at one-second
intervals. (Check mode)
Example
Check
code
(2) When one remote controller controls several units in the group con-
trol, the LCD shows the unit address and check code of the first mal-
functioning unit.
(3) To cancel the check mode, press the ON/OFF button. In remote
ON/OFF control, press the remote ON/OFF switch. In centralized
control, turn OFF the
NOTE: The latest check code is memorized, even if the check mode is cancelled by the way mentioned above. It takes
60 seconds maximum to display the memorized check code.
2-2 How to use the self diagnostic function for service
A. For normal control with one unit and one remote controller
(1) Pressing the CHECK button on the remote controller twice starts the self diagnostic function.
(2) During the self diagnostic function, "CHECK MODE" appears at two positions on the remote controller display. Then, at
least 10 seconds later, the unit address and the check code is alternately displayed at one-second intervals.
(3) Check and repair the unit according to the check code. (Refer to page 35.)
B. For group control using one remote controller
(1) Pressing the CHECK button on the remote controller twice starts the self diagnostic function.
(2) Press the SET TEMP. button or
unit address. Each time
TEMP. button is pressed, the unit address goes back by one.
The check code and the unit address, appear alternately.
(3) The check code "U8" means no malfunction has occurred since installation.
The check code "E0" means the following conditions:
The unit address displayed on the remote controller does not apply to any unit.
power is not supplied to the unit.
Signal transmitting/receiving circuit is abnormal.
(4) Check and repair the unit according to the check code. (Refer to page 35.)
Unit
address
ON/OFF button of centralized controller.
SET TEMP. button on the remote controller to advance or go back to the
SET TEMP. button is pressed, the unit address advances by one. Each time
OC246-34
CHECK mode
MODE TIMER ON/OFF CLOCK/TIMER FAN SPEED AIR DISCHARGE
SET TEMP. TIMER SET
REMOTE CONTROLLER
PAR-JH24KUS
FILTER
AIR SWEEP CHECK
TEST RUN
Check button
SET