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[5] Function of Dip SW and Rotary SW
(1) Outdoor unit
PUHY-P600·650·700·750
YSEM-A
PUHY-P400·500
.
YEM-A
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
connected.
Storing of refrigeration
system connection
information.
Store IC·OC error history.
Ordinary control
-
Ordinary control
-
When the CS circuit is
closed, that time is totaled.
SW3-2 Function Invalid
Stop all indoor units.
– 8°C
7°C
table 1
Ordinary control
Ordinary control
-
Model 400
SW4-3 Function invalid
Display variable capacity
unit operations.
Changes as shown below by on → off change
0 %→3 %→6 %→9 %→12 %→ – 6 %→ – 3 %→0 %
Ordinary control
-
Big Y Setting
table 1
-
-36-
When On
Before power is turned on.
y on the outdoor board.
-
Centralized control
Before power is turned on.
connected.
Deletion of refrigeration
Before power is turned on.
system connection
information.
Erase IC·OC error history.
During normal operation when
power is on.
During normal
• Refrigerant volume
adjustment operation.
operation when
power is on.
• Ignore liquid level errors
-
Start forced defrosting.
During normal
operation when
power is on.
-
During normal operation when
Timer Reset
power is on.
During normal operation when
SW3-2 Function Valid
power is on.
When SW3-1 is ON after power is
All indoor units test run
turned on.
ON.
– 10°C
During normal operation when
power is on.
During normal operation when
12°C
power is on. (Except during
defrosting)
During normal operation when
power is on.
While the compressor is stopped.
Pump Down Operation
High pressure/1.5 ~ 2.5 K
During normal operation when
power is on.
higher than normal
-
Model 500
When switching on the power.
SW4-3 Function valid
When switching on the power.
Display constant capacity
During normal operation when
unit operations.
power is on.
When SW4-1 is ON
Auto changeover Valid
When switching on the power
-
Super Y Setting
Bef
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 Off
When On
-
Invalid 2 hours
after compressor
starts.
-
10 minutes or
more after
compressor
starts.
-
-
-
ore power is turned on.
-
-
Evaporation temp. (˚C)
OFF
0 ~ 4
OFF
–1 ~ 3
ON
–5 ~ 1
–6 ~ 0
ON
OFF
–2 ~ 2
–4 ~ 2
OFF
ON
–7 ~ –1
–8 ~ –2
ON
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