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2. Dip switch functions
Switch
Function according to switch setting
Switch setting timing
OFF
ON
SW1
1
TH0 thermistor selection
Operation after power recovery *1
Operation after power recovery
Water inlet thermistor TH6
Before power on
Before power on
Before power on
2
-
-
-
-
3
Remains stopped
Depends on the SW1-3 setting
Auto recovery (to the status
before power failure)
Forced to operate
*1 Valid only when SW1-4 is set to OFF
4
5
-
-
-
-
6
-
-
-
-
6
-
PUMY only *7
-
7
Test-run mode
OFF
ON
Any time
8
Error history deleted
Normal
Deleted
Any time
Brine mode *2
Ineffective
Effective
Any time
9
Effective only when SW1-7 is
set to ON and only on the HEX
models.
Heating
Cooling
Any time
Any time
10
SW2
1-10 For self-diagnosis/operation
monitoring
-
SW3
1
Capacity setting (HEX unit only) 4HP
8HP (HEX unit only)
Before power on
2
Service LED display selection
Display in Centigrade
Display in Fahrenheit
Any time
3
-
-
-
-
-
4
-
-
-
-
5
Cumulative compressor opera-
tion time is deleted.
Normal
Deleted
Any time
6
7
-
-
-
-
8
-
-
-
-
9
10
SW4
1
2
3
Use to change preset temperature
range for the Heating ECO mode.
Do not change from factory setting.
Do not change from factory setting except for PUMY *7
Booster : Ineffective
HEX : Ineffective
Booster : 30°C to 50°C
HEX : 30°C to 50°C
Before power on
4
Use to change preset temperature
range for the Anti-freeze mode.
Pump interlock operation
During Thermo-ON or
Thermo-OFF
During Thermo-ON only
Any time
Any time
Heating Thermo OFF differential change *3
Before power on
5
-
-
-
-
-
7
-
-
-
-
8
-
-
-
-
9
-
-
-
-
10
-
-
-
-
SW5
1
Error detection enabled
Enabling/disabling ACCT sensor
error detection
Error detection disable
(No load operation is possible)
Any time
2
-
-
-
-
3
-
-
-
-
4
-
-
-
-
Booster : Ineffective
HEX : Ineffective
Booster : 10°C to 45°C
HEX : 10°C to 45°C
*2 Refer to P64.
*3 The following changes can be made by changing the setting of the switch from OFF to ON.
0.5
1
0.5
2
0.5
3
0.5
4
0.5
5
0.5
6
0.5
7
0.5
8
Water outlet thermistor TH8
*4 This function is available on ver. 1.24 or later.
*5 When setting DipSW3-10 to ON, make sure that the water flow rate in the system is greater than the minimum design amount.
*6 This switch is reset when set from OFF to ON.
*7 When connecting a PWFY unit to a PUMY unit, set DIP switches SW1-1, SW4-2, and SW4-6 of the PWFY unit to ON.
Function
Before power on
9 minutes and 59 seconds
9 seconds
Sets the restart interval for the
delay mode. *4, *5
Reset overwrite protection *6
Keep overwrite protection
Resets the pre-error data overwrite
protection. *4
