- 56 -
Switch
Function
Function according to switch operation
Switch settig timing
OFF
ON
ON
OFF
SWU
SW1
SW2
SW3
SW4
1~2
1~8
9~10
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
8
9
10
1
2
3
Unit address setting.
Self-diagnosis/operation
monitoring.
–
Deletion of connection
information.
Deletion of error history.
Changing Tem change
timing.
3 minutes.
5 minutes.
Refrigerant amount
adjustment.
Outdoor-air sensor
abnormality/refrigerant
overfilling disregarded.
Stand-by mode switching.
–
–
SW3-2 function
valid/invalid.
Indoor unit test run.
Compressor operating
frequency change.
–
Pump down operation.
Switching thermostat
control function.
–
Switching solenoid valve
SV3’s control type.
SW4-2 Function
valid/invalid.
Refrigerant composition
correction value.
–
Set to numbers between 51 and 90 with the dial switch.
Refer to section VIII Display on the LED monitor on the outdoor unit board.
–
Storage of refrigerant
system connection
information.
Normal Control.
Errors valid.
Operation starts upon
IPM bus voltage error
detection.
–
–
SW3-2 function invalid.
All indoor units stopped.
Fmax=72Hz
–
No action
Valid
–
Invalid
–
–
–
–
–
–
Deletion of refrigerant
system connection
information.
Deletion of IC/OC error
history.
Storage of IC/OC error
history.
Refrigerant amount
adjustment operation.
Disregard errors.
Operation starts upon IPM
bus voltage error detection
or detection of outdoor air
temperature reading at 5
°
C.
–
–
SW3-2 function valid.
All indoor unit on test run.
Fmax=90Hz
–
Operation starts
Invalid
–
Valid
–
Set to OFF.
Before power is turned on.
After power on.
(when switching
from OFF to ON)
Becomes invalid
2 hours after
compressor start.
After power on. (when switching
from OFF to ON)
–
–
–
–
–
–
–
–
–
–
After power on. (when switching
from OFF to ON)
After power on. (when switching
from OFF to ON)
After power on. (when switching
from OFF to ON)
After power on. (when switching
from OFF to ON)
After power on and when SW3-1
is ON.
After power on. (when switching
from OFF to ON)
–
After power on and when
compressor is stopped.
(When switching from OFF to ON)
–
–
–
–
–
–
–
–
–
After power on. (when switching
from OFF to ON)
When SW4-1 is ON.
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
OFF
ON
–
–
–
–
–
–
–
–
–
Before power on.
Note :
Factory setting: SWU1-2 = 00, SW4-9 = on, all the others are set to OFF.
The value changes as the following by the switching
of ON and OFF switch.
±
0%
+3% +6% +9% +12% –6% –3%
±
0%
4
5
6
7
8
9
10
5
5
. Control
1
1
Dip Switch Functions and Factory Settings
[1] Outdoor Unit
< PUD-P250YMF-C >
(1) Main Board
