149
A/C No. 01 02030405060708
Indoor unit
printed circuit
board DIP switch
(SW2)
Unnecessary
operation
1-ON 2-ON 1,2-ON 3-ON 1,3-ON 2,3-ON 1,2,3-ON
A/C No. 09 10111213141516
Indoor unit printed
circuit board DIP
switch (SW2)
4-ON 1,4-ON 2,4-ON 1,2,4-ON 3,4-ON 1,3,4-ON 2,3,4-ON 1,2,3,4-ON
11.12.5 SELF-DIAGNOSIS FUNCTION
• The lit LED 1 (Green) on the printed circuit board for the outdoor unit indicates that the printed circuit board for
COM is operating properly. When it is unlit or blinks irregularly, check the power connections and then turn the
power on again.
IF “CHECK” IS BLINKING ON THE TIMER
• If the “CHECK” display on the wired controller is blinking, the details of the problems are displayed on the timer
display screen each time the CHECK
switch is pressed.
• Further details of the problem can be displayed by pressing the SET
switch while the general problem details are
being displayed.
Example of current problem display
Press the CHECK switch Further details of the problem can be
displayed by pressing the SET switch.
Problem details
Problem display
••
REVIEWING THE PROBLEM HISTORY
• If the “CHECK” display on the wired controller is not blinking, press the CHECK
switch continuously for 5
seconds or more to display the problem details for the last problem or the problem before that.
• You can then switch between the display for the previous problem and the problem before that by pressing the
UP / DOWN
(TIMER) switches.
• Press the CHECK
switch once more to return to the normal display.
Example of previous problem display
Press the CHECK switch for 5 seconds or
more
Further details of the problem can be
displayed by pressing the SET switch.
Problem details
Problem display
••
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