Pentair PS4 - Manual (Page 30)

Page 30
7.3 DIP Switch Settings for Pool or Spa Only
DIP Switch # OFF ON
1 AUX1= any equipment AUX1= Pool Cleaner
2 AUX2= any equipment AUX2= Low Speed for a two-speed filter
pump.
Filter pump circuit becomes High Speed.
3 AUX3= any equipment No change
4 Heater cool down operates. Heater cool down disabled.
5 Normal operation Factory adjustment- when this switch is on,
temperature delays are eliminated.
Do not leave this switch in the ON
position.
6 Spare No change
7 Spare No change
8 After thermostat setting has been reached,
heater will remain OFF for 3 minutes. After thermostat setting has been reached,
heater will remain OFF for 5 minutes.