How to Recalibrate a Pressure Switch on a Hot Tub
- 1). Locate the breaker box near the hot tub and open it. You will notice the pressure switch wheel assembly inside the box next to the thermometer.
- 2). Turn the adjustment wheel on the front of the pressure switch counterclockwise until it can't go any further. The heater on the hot tub will then turn on.
- 3). Turn the wheel clockwise until it won't go any further. The heater in the hot tub will then shut off.
- 4). Turn the wheel counterclockwise one revolution. Then turn it one half revolution more in the same direction. The hot tub pressure switch will then be calibrated.
- 5). Close the breaker box panel.
