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6.4 Circuit Board Jumpers (All Export 50 Hz 1-Pump Models)
These circuit boards can be configured for 20A or 30A logic. Each mode affects overall energy con-
sumption and heater performance.
Pins 1-2:
Jumper ON Enables 20A logic; forces heater off when jets pump 1 is running in high
speed. This is the factory default.
Pins 1-2:
Jumper OFF Enables 30A logic; allows heater to operate when jets pump 1 is running in
high speed
Pins 3-4:
Jumper ON Enables 2 Pump Operation (2-pump models only)
Pins 3-4:
Jumper OFF Enables 1 Pump Operation
Pins 5-6:
Jumper ON Not Used
Pins 5-6:
Jumper OFF Not Used
Pins 7-8:
Jumper ON Enables Celsius (°C) temperature display
Pins 7-8:
Jumper OFF Enables Fahrenheit (°F) temperature display
Summary of Contents for LCD Series
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