Mitsubishi Electric PL18FK2 Service And Parts Manual page 78

3. SELF-DIAGNOSTIC FUNCTION WITH LED ON OUTDOOR CONTROLLER BOARD
Setting dip switchs SW2 and SW3 on the outdoor controller board enables LED to show the output state and check code.
Output state is shown by LED lighting, and check code by blinking.
SW1
:
Turning SW1 ON clears the check code. If SW1 is turned to ON during check code blinking, the indication changes.
to output state indication.
NOTE
:
SW1 is usually available independant of SW3 setting. As an exception, when the check code shows a
reversed phase or an open phase during the power-on-reset state, SW1 is not available.
SW2 : SW2 is turned t o ON by pushing, and OFF by releasing.
When SW3-1 and SW3-2 are OFF, pushing SW2 changes indication between output state and check code
alternately.
SW3
:
Output state indication items depend on combination of SW3-1 ON/OFF and SW3-2 ON/OFF.
r
Changed alternately by pushing SW2.
Check code
Outdoor coil Fan output step
Total time of
Output state
1
t e m ~ ~ $ t u r e
1
(bit)
1
com pressor
operation (Hr)
I I I
I I '
1 I I
I I
Heating operation command
1
LD2 Open phase has been sensed. indoor controller
5%
I
2
1
2
1
512
ON
LED
LD1
LD3
1
Outdoor coil thermistor is
During 63H1 function
3%
abnormal.
/
4 4 1 1 0 2 4
ON
ON
SW3-1
OFF
blinking
Reversed phase has been sen-
sed.
Overheat protection has wor-
LD7 ked.
/
Bypass valve ON
3%
/
6 4 6 4 16384
OFF
OFF
SW3-2
LD4
LD5
LD6
I
LD8
I
Input circuit on controller
Crankcase heater ON
board is abnormal.
OFF
OFF OFF
lighting
%Not applied to series PL/PLL/PC/PCL/PK/PKL.
ON
63H2 has worked.
51 CM has worked.
26C has worked.
Comp. ON command from in-
door controller
1 1
Compressor ON
Outdoor fan ON
Reversing valve ON
5%
2 5 6
8
1 6
3 2
8
16
-
3 2
2048
4096
8192