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3.SERVICE DATA INDICATION BY SWITCHES 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 ON while the check code is 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 ON by pressing, and OFF by releasing.
When SW3-1 and SW3-2 are OFF, pressing SW2 changes indication between output state and check code alternate-
ly.
When SW2 is turned On with SW3-1 OFF and SW3-2 ON, the compulsory defrosting starts.
SW3 : Output state indication items depend on the combination of SW3-1 ON/OFF and SW3-2 ON/OFF.
Changed alternately by pressing SW2.
SW3-1
SW3-2
OFF
OFF
Check code Output state
Outdoor coil
temperature
(
bit
)
Fan output
step
(
bit
)
Total time of
compressor
operation
(
Hr
)
OFF
OFF
OFF
ON
ON
OFF
ON
ON
LED
LD1
LD2
LD3
LD4
LD5
LD6
LD7
LD8
Blinking
Reversed phase
Open phase
63H2 function
51C function
26C function
Overheat protection
During 63H1 function
Compressor ON
Outdoor fan ON
4-way valve ON
Bypass valve ON
Crankcase heater ON
Lighting
1
2
4
8
16
32
64
128
1
2
4
8
16
32
64
128
256
512
1024
2048
4096
8192
16384
32768
Outdoor coil thermistor
is abnomal.
Heating operation command from
indoor controller
Compressor ON command from
indoor controller
Input circuit on controller
board is abnormal
OC120--2.qxp 24/6/97 12:32 AM Page 54