Frequently Asked Questions

Please see below. You may very well find the solutions you are looking for as well as new ideas that could come in handy later. We suggest you check back here often, as we will be regularly updating this info.

General Information

Where can I find your product manuals?
Who do I call if my panel or system isn't working?
Can I buy replacement parts from you?
How do I become a dealer?
Who can I talk to about product images and using your logo?

Spa Control Trouble-Shooting

Why does the soldered in fuse located on the circuit board blow?
Why does the panel display "FLO" constantly and nothing works?
Why does the panel display "FLO" alternating with current temperature?
Why does the system power input fuse (20A, 25A or 30A) keep blowing?
Why does the panel display "SN3"?
Why does the panel display "SN1"?
Why does the control panel display "OH"?
Why isn't the system maintaining the set temperature of the water?
The system is receiving proper voltage, why doesn't anything function?
Why does the GFCI trip immediately upon power up?


Where can I find your product manuals?
All our product information and marketing materials can be found by clicking here or choosing Marketing Materials under the support tab.

Who do I call if my panel or system isn't working?
If your panel or system is not functioning properly, you will need to call the store or person where you bought the spa or panel. In the event that you cannot get in touch with this party, contact the spa or bath tub manufacturer.  If both of those are unavailable, contact a local spa technician.

Can I buy replacement parts from you?
Yes.  You can purchase parts on-line at our web store http://balboadirect.com

How do I become a BWG dealer?
You can sign-up become a trade account to purchase on-line at our web store http://balboadirect.com and register here http://balboadirect.com/dealer-application.aspx

Who can I talk to about product images and using your logo?
For information on reproducing our logo and any product images found on this website, contact the Marketing Department.

Q. Why does the soldered in fuse located on the circuit board blow?


  1. Make sure the system has the proper incoming voltage.

  2. Check for proper wiring inside the system box and look for any loose connections or cut wires.

  3. Plug in a new transformer.

Q. Why does the panel display "FLO" constantly and nothing works?



  1. This is an indication of a pressure switch stuck in the closed position.
  2. Check the slice valves and verify that they are open.

  3. Make sure the pressure switch wire is connected to the proper circuit board connector.

  4. Disconnect the pressure switch wire from the circuit board.

  5. If the hot tub operates normally, then recalibrate the pressure switch.

  6. If the pressure switch cannot be recalibrated then replace it.

  7. If the problem continues after disconnecting the pressure switch wire from the circuit board, replace the board.


Q. Why does the panel display "FLO" alternating with current temperature?


  1. This is an indication of an open pressure switch.

  2. Check the water level.

  3. Check for blockage in the filter cartridge, skimmer basket and pump intake fittings.

  4. Check the slice valves and verify that they are open.

  5. Make sure the pump is primed and pumping properly.

  6. Make sure the pressure switch wire is connected to the proper circuit board connector.

  7. Check the pressure switch wires for cuts.

  8. Recalibrate the pressure switch.

  9. If the pressure switch cannot be recalibrated, replace it.


Q. Why does the system power input fuse (20A, 25A or 30A) keep blowing?


  1. Chances are it is a bad pump or blower.

  2. Make sure to replace any blown fuse with a fuse of the exact same type and rating.

  3. Unplug all the pumps and blower.

  4. If the fuse blows again, verify proper internal system wiring and check wires and connectors for cuts and burns.

  5. Replace the device that blows the fuse.


Q. Why does the panel display "SN3"?


  1. Make sure the system has proper incoming voltage.

  2. If an ozonator is present, disconnect it.

  3. Replace the temperature sensor.

  4. If it still displays "SN3" then replace the board.


Q. Why does the panel display "SN1"?


  1. Make sure the system has proper incoming voltage.

  2. If an ozonator is present, disconnect it.

  3. Replace the hi-limit sensor.

  4. If it still displays "SN1" then replace the board.


Q. Why does the control panel display "OH"?


  1. Overheat protection may occur if the pump is set to operate for extended periods.

  2. In extremely hot weather, check for proper cabinet ventilation.

  3. When the hot tub is in a filter cycle, make sure P1 low-speed is on.

  4. Check slice valves. Make sure that they are open.

  5. Check for blockage in the filter cartridge, skimmer basket and pump intake fittings.

  6. Check the alignment of the heater element in the heater housing to make sure it is straight and not contacting the sides.

  7. Make sure the temperature sensor is installed properly.


Q. Why isn't the system maintaining the set temperature of the water?


  1. Make sure that the water temperature displayed on the topside panel is at least 1 degree below the heater set temperature and set the control to standard mode.

  2. Check voltage across the two connections to the heater. Your meter should read either 120 or 240 volts depending on your installation.

  3. If voltage to the heater is good, replace the heater.

  4. If your meter reads low or zero voltage, verify proper pressure switch operation.

  5. Keep in mind that the heat indicator will not light if the pressure switch is not closed.


Q. The system is receiving proper voltage, why doesn't anything function?


  1. Check for blown fuses, burn marks or signs of tampering in the box.

  2. Power down the hot tub. Plug in a test transformer and test panel, and return power to the hot tub.

  3. Replace the board.


Q. Why does the GFCI trip immediately upon power up?

  1. If this is a new installation, make sure that the GFCI is wired correctly.
  2. Disconnect all the components (i.e., pumps, blower, ozonator, heater) and plug them back in one at a time to verify which component is causing the GFCI to trip.

  3. Check for any loose connections or cut wires in the box.

  4. Plug in a new transformer