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Outdoor unit
Switch
SW U1
1s digit
SW U2
10ths digit
SW1 Digital
Display
Switching
SW2
Function
Switching
SW5
Function
switching
SW3
Test run
SW4
Model
Switching
Step
Operation in Each Switch Setting
ON OFF When to Set
Remarks
Before turning
the power on
Before the power
is turned on
Rotary switch
1
2
3
4
5
6
1
2
1
2
3
4
5
6
7
8
Function
1~8
1~6
Can be set
either during
operation or not
Before turning the
power on
Before turning the
power on
Any time after the
power is turned on
OFF to ON any time after
the power is turned on
During compressor
running
OFF to ON during com-
pressor running
Enable
—
ON
Disable
Enable
Enable
Active
Normal
Normal
Inactive
Heating
Enable
Enable
Cooling
OFF
—
Start upDoes not start up
Clear
Do not clear
Normal
Normal
Normal
Normal
Fix Normal
Fix Normal
Clear abnormal data
Run adjustment mode
Selects operating system startup
Connection Information Clear Switch
Abnormal data clear switch input
Pump down
Auto change over from Remote controller
—
Mode setting
ON/ OFF from outdoor unit
<Initial settings>
<Initial settings>
<Initial settings>
<Initial settings>
<Initial settings>
<Initial settings>
Set for each capacity.
Pressure limitation value change
Change the indoor unit's LEV
opening at start
Fixing the indoor units linear expansion
valve opening
Fix the operation frequency
Change the indoor unit's LEV opening
at defrost
SWU2
(10ths digit)
0
1
2
3
4
5
6
7
8
9
SWU1
(1s digit)
0
1
2
3
4
5
6
7
8
9
SWU2
(10ths digit)
0
1
2
3
4
5
6
7
8
9
SWU1
(1s digit)
0
1
2
3
4
5
6
7
8
9
1
ON
OFF
234 5678
1
ON
OFF
234 5678
1
ON
OFF
23456
1
ON
OFF
2
Can be set when off
or during operation
Can be set when off
or during operation
Switching the target sub cool
During the FAN or COOL mode,and thermo-OFF
or OFF in heating operation, set the opening of
linear expansion valve on indoor unit
+1
During the FAN or COOL mode,and thermo-OFF
in heating operation, set the opening of linear ex-
pansion valve on indoor unit
+2
Active Inactive
<MODEL SELECT>
+1 SW5-7 Refrigerant shortage amount is measured during heating operation
(Refrigerant piping is long etc.)
+2 SW5-8 Countermeasure against room temperature rise for indoor unit in FAN, COOL, and thermo-OFF (heating) mode.
1
ON
OFF
234 5678
+3 (Note : This model switching is available for PUMY-P48NHMU1(-BS) and PUMY-P48NHMU2(-BS), PUMY-P48NHMUR3(-BS)
but not available for PUMY-P48NHMU(-BS) since it does not have the auxiliary heater function.)
DIP SW4-4 for primary heating control : Set DIP SW4-4 when power is turned off at unit
DIP SW4-4 OFF : Disable primary heating function (Initial setting)
DIP SW4-4 ON : Enable primary heating function
MODELS
PUMY-P48NHMU
SW4
ON
OFF
123456
PUMY-P36NHMU
ON
OFF
123456
+3
9-5. INTERNAL SWITCH FUNCTION TABLE
PUMY-P36NHMU/NHMUR1(-BS)
PUMY-P48NHMU/NHMU
1/NHMU2/NHMUR3(-BS)
The black square (■) indicates a switch position.