Reverse Action Pressure Switch Troubleshooting

Overview:

Unlike standard action pressure switches you’d typically use with an AC well, our controllers require a Reverse Action Pressure Switch (RAPS). This is due to the logic our controllers operate. The tank height sensor terminal is a "normally-open" circuit. So it'll look for an open circuit in order to operate the pump. Once the circuit is closed (ex. When the pressure is reached, the pressure switch contacts will close), the pump will turn off.

For systems with a 100v controller: You’ll see a tank full light illuminated on the controller, and the pump will turn off. 

For pro systems: You’ll see a yellow alarm light on the controller. The keypad will display “A-TF” which means Alarm-Tank Full.

NOTE: Whether you have a standard system or pro system, the logic and troubleshooting steps remains the same. With pro systems, you'll have the RAPS wired into the COM port plug so you'll have an additional factor to consider.

A9 Series pressure switches: If you have an A9 series pressure switch, all troubleshooting steps remain the same. But keep in mind - this switch does not have a lever to engage the contacts, and the set pressure range is non-adjustable. More on this switch below.
 

Troubleshooting:

Now that we have a basic understanding of the logic, note down the symptoms your getting and lights observed. Then use this flowchart to guide your troubleshooting:

 

More on A9 Series:

The A9 series pressure switch normally used with pitless adapter setups, cannot be submerged. One additional thing to check is the spade connecters. Ensure they are secure and wired correctly. They should be wired to the top and middle (normally open) contact. Polarity doesn't matter.