Welcome to the updated SpaPartsNet!

Need help finding a part? Text photos: 772-800-5445 | Call: 844-500-4645

We’ve upgraded the site with more products and better shipping prices.

USA Shipping Promo: FREE SHIPPING in the USA on parts orders over $75
(Excludes Alaska & Hawaii and oversized/heavy items.)

Note: Oversized/heavy items (like complete pumps) may require additional shipping charges, especially to AK/HI.

Previous Customers (Important)

If you previously had an account, your information is still here — you’ll just need to reset your password because passwords did not transfer during the migration.

Reset Your Password

Note: Some heavier items (such as complete pumps) may have shipping limitations outside of the USA.

Welcome to the updated SpaPartsNet!

Need help finding a part? Text photos: 772-800-5445 | Call: 844-500-4645

We’ve upgraded the site with more products and better shipping prices.

USA Shipping Promo: FREE SHIPPING in the USA on parts orders over $75
(Excludes Alaska & Hawaii and oversized/heavy items.)

Note: Oversized/heavy items (like complete pumps) may require additional shipping charges, especially to AK/HI.

Previous Customers (Important)

If you previously had an account, your information is still here — you’ll just need to reset your password because passwords did not transfer during the migration.

Reset Your Password

Note: Some heavier items (such as complete pumps) may have shipping limitations outside of the USA.

Shop by Category

Circuit Boards

Hot Tub Not Heating? Spa Control Board Problems

If your hot tub suddenly stops heating or begins showing error codes, the problem may be related to the spa control circuit board. The circuit board is the main electronic component that manages the entire spa system, including pumps, heaters, sensors, and filtration cycles.

When a circuit board begins to fail, spas may experience a variety of symptoms.

Common spa control board problems include:

  • Hot tub not heating

  • Spa showing error codes

  • Pump not turning on

  • Heater not activating

  • Control panel not responding

  • Spa keeps tripping the breaker

  • Jets or lights not working

Many modern hot tubs use control boards manufactured by companies such as Balboa, Gecko, Hydro-Quip, and others. These boards communicate with the topside control panel and operate the heater, pumps, and safety systems.

If a circuit board fails, replacing the correct control board can restore proper spa operation without replacing the entire spa system.


Common Signs of a Bad Spa Circuit Board

A failing spa control board may show several warning signs before completely failing:

  • Hot tub heater will not turn on

  • Spa control panel flashing or blank

  • Error codes appearing on display

  • Pumps randomly turning on or off

  • Hot tub stuck in priming mode

In some cases the issue may also involve sensors, heaters, or transformers connected to the board.


Spa Control Boards and Electronics

This section includes replacement parts used in spa control systems such as:

  • Spa circuit boards

  • Control pack electronics

  • Board transformers

  • Control system components

  • Hot tub retrofit control packs

These parts are used in many spa brands and control systems found in residential hot tubs.

SpaPartsNet is an independent supplier of spa parts and is not affiliated with or authorized by any manufacturer listed. Brand names are used strictly for compatibility identification.

Need help identifying the correct part? Text photos: 772-800-5445 | Call: 844-500-4645