3. SERVICE DATA INDICATION BY SWITCHES ON OUTDOOR CONTROLLER BOARD
Setting dip switches SW2 and SW 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 ON while the check code is blinking , the indication changes
to output state indication.
NOTE
: SW1 is usually available independent of SW 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 ON by pressing, and OFF by releasing.
When SW-1 and SW-2 are OFF, pressing SW2 changes indication between output state and check code alternately.
When SW2 is turned On with SW-1 OFF and SW-2 ON, the compulsory defrosting starts.
SW : Output state indication items depend on the combination of SW-1 ON/OFF and SW-2 ON/OFF.
Changed alternately by pressing SW2.
SW3-1
SW3-2
LED
Check code
OFF
OFF
Outdoor coil thermistor is
abnormal
Input circuit on controller
board is abnormal
Open phase
63H2 function
51C function
26C function
Overheat protection
Reversed phase
Blinking
Output state
OFF
OFF
OFF
Outdoor coil
temperature
(bit)
ON
1
2
4
8
16
32
64
128
1
2
4
8
16
32
64
128
256
512
1024
2048
4096
8192
16384
32768
ON
Fan output
step
(bit)
OFF
ON
Total time of
compressor
operation(Hr)
ON
Compressor ON command
from indoor controller
Heating operation command
from indoor controller
During 63H1 function
Compressor ON
Outdoor fan ON
4-way valve ON
Bypass valve ON
Crankcase heater ON
Lighting
LD1
LD2
LD3
LD4
LD5
LD6
LD7
LD8
OC229A
