Where is the flow switch on my Jacuzzi hot tub?

One of the most simple ways to diagnose a FL 1 or FL 2 error code on your Jacuzzi J-300 Series hot tubs is to just do a visible inspection of the flow switch. You’ll need to remove the front panel to see the flow switch, which is located just to the upper right of the control box a few inches from the heater.

What does a flow switch do on a hot tub?

Hot tub flow switches and pressure switches monitor the flow of water through your tub and act as a safety device, turning the heater off if the water flow is interrupted. This safety mechanism is built into hot tubs to prevent damage to your heater and other equipment.

How does a hot tub flow sensor work?

These sensors test the actual water flow within the plumbing. As water moves it pushes two tiny metal plates together, completing an electrical circuit that tells the spa pack that there is enough water flow. Temperature sensors. This type of flow sensor measures water temperature in two different parts of the hot tub.

Do you need to drain hot tub to replace flow switch?

Drain the spa of water and remove the heater assembly. You’ll need to work on a bench so there is access to all sides of the tee. Step 2: Remove the flow switch assembly and store for now.

How does a flow switch work?

A piston (or shuttle) flow switch is designed so that a free-floating magnetic piston responds to the amount of flow within a pipe. When there is an increase or a decrease in the flow rate, movement of the piston actuates a hermetically sealed reed switch, triggering the specified action.

Can you bypass the flow switch on a hot tub?

Use another short piece of wire to connect the two wires you just pulled off that connect the spa to the main control panel. This action bypasses the flow switch and completes the electrical circuit back to the main control panel.

How do you bypass a flow sensor?

How to Bypass a Flow Sensor in a Pool Heater

  1. Shut off the circuit breaker that controls electricity to the pool heater and the pool pump that sends water through the heater.
  2. Use a screwdriver to take out the screws holding the housing over the heater.
  3. Detach the two wires from the sensor.

How do you fix a low flow error on a hot tub?

Option 1: Raise The Hot Tub Water Level Wait around 15-20 minutes then turn the power back on, switching on the jets and seeing if it resolves the flow error. If this clears the flow issue, you can then switch off the spa, replace the filter back then switch back on.

How do you bypass a flow switch?

Broken Flow Switch Use another short piece of wire to connect the two wires you just pulled off that connect the spa to the main control panel. This action bypasses the flow switch and completes the electrical circuit back to the main control panel.