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[5] Function of Dip SW and Rotary SW
(1) Outdoor unit
PUHY-P600·650·700·750YSMF-C.
PUHY-P400·500YMF-C.
1 Variable capacity unit
MAIN board
Switch
Function
SWU 1 ~ 2
Unit Address Setting
1 ~ 8
For self diagnosis/
SW1
operation monitoring
9 ~ 10
-
1
Centralized Control
Switch
2
Deletion of connection
information.
3
Deletion of error history.
4
• Adjustment of Refriger-
ant Volume
• Ignore liquid level errors
SW2
5 ~ 6
-
7
Forced defrosting
8 ~ 9
-
10
Reset of the time the CS
circuit is closed.
1
SW3-2 Function Valid/
Invalid
2
Indoor Unit Test Operation
3
Defrosting start tempera-
ture .
4
Defrosting end tempera-
SW3
ture.
5
Target low-pressure
change
6
Pump Down Function
7
Target high-pressure
change
8 ~ 9
-
10
Models
1
SW4-3 Function valid/
Invalid
2
Change service LED
3
Configuration compensa-
tion
value
SW4
4
Auto changeover function
5
-
6
Switch
Models
7 ~ 8
Target low-pressure change
9 ~ 10
-
Note 1: Factory setting is SWU 1 to 2 = 00, SW3 - 10 = set by model.
All other switches are set to OFF.
Note 2: If the address is set from 01 to 50, it automatically becomes 100.
Note 3: Factory settings are SW4-6 = OFF, setting = BIG Y.
When operating in Super Y mode, turn SW4-6 ON.
Note 4: When Auto changeover function is valid, Operating mode is
decided by the indoor unit which address number is minimum.
Function According to Switch Operation
When Off
Set on 51 ~ 100 with the rotary switch.*2
Refer to LED monitor displa
-
Centralized control not
Centralized control
connected.
connected.
Storing of refrigeration
Deletion of refrigeration
system connection
system connection
information.
information.
Store IC·OC error history.
Erase IC·OC error history.
Ordinary control
• Refrigerant volume
• Ignore liquid level errors
-
Ordinary control
Start forced defrosting.
-
When the CS circuit is
Timer Reset
closed, that time is totaled.
SW3-2 Function Invalid
SW3-2 Function Valid
Stop all indoor units.
All indoor units test run
ON.
– 8°C
7°C
table 1
*
Ordinary control
Pump Down Operation
Ordinary control
High pressure/1.5 ~ 2.5 K
higher than normal
-
Model 400
SW4-3 Function invalid
SW4-3 Function valid
Display variable capacity
Display constant capacity
unit operations.
unit operations.
Changes as shown below by on → off change
0 %→3 %→6 %→9 %→12 %→ – 6 %→ – 3 %→0 %
Ordinary control
Auto changeover Valid
-
Big Y Setting
Super Y Setting
table 1
*
-
-36-
When On
When Off
Before power is turned on.
y on the outdoor board.
-
Before power is turned on.
Before power is turned on.
During normal operation when
power is on.
During normal
adjustment operation.
operation when
power is on.
-
During normal
operation when
power is on.
-
During normal operation when
power is on.
During normal operation when
power is on.
When SW3-1 is ON after power is
turned on.
– 10°C
During normal operation when
power is on.
12°C
During normal operation when
power is on. (Except during
defrosting)
During normal operation when
power is on.
While the compressor is stopped.
During normal operation when
power is on.
-
Model 500
When switching on the power.
When switching on the power.
During normal operation when
power is on.
When SW4-1 is ON
When switching on the power
-
Bef
ore power is turned on.
During normal operation when
power is on.
-
table 1
*
Dip SW
3 ~ 5
4 ~ 7 4 ~ 8
OFF
OFF
OFF
ON
OFF
OFF
OFF
ON
ON
OFF
ON
ON
ON
OFF
ON
ON
Switch Set Timing
When On
-
Invalid 2 hours
after compressor
starts.
-
10 minutes or
more after
compressor
starts.
-
-
-
-
-
Evaporation temp. (˚C)
OFF
0 ~ 4
–1 ~ 3
OFF
ON
–5 ~ 1
–6 ~ 0
ON
OFF
–2 ~ 2
–4 ~ 2
OFF
ON
–7 ~ –1
–8 ~ –2
ON
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