Pools Plus of Michigan

Frequently Asked Question

If red and green indicator lights are blinking on your 2003 or newer Hot Spring spa...

If your 2003 or newer Hot Spring spa is blinking both the Red and Green indicator lights, the flow switch inside the heater is not registering the proper water flow to activate the heater. This can be remedied by following these steps.

  • If the spa has been recently drained and refilled, it is possible to have an air pocket in the circulation line. To help eliminate this from happening, always fill the spa through the center of the GREY filter standpipe. Remove the GREY screw cap and push the hose into the GREY standpipe. Turn the hose on full force and water pressure help remove the air pocket.
  • Check the filters. If the filters have not been cleaned within the past 4 to 6 weeks, remove them and clean the filters. With the filters removed, reset the spa by powering off the spa, wait 1-2 minutes and turn the power back on.
  • Check the water level. If the water level is low, the circulation pump will not be able to pull in enough water to create proper flow. Keep the spa filled at least to the middle of the filter compartment. Reset the spa by powering off the spa, wait 1-2 minutes and turn the power back on.
  • If none of these solve the blinking lights, please call the service department to schedule a service appointment.
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