Programmable Whirlpool Tub Control Box | 34-99633-K Bath Control | Whirly Bros

Upgrade your whirlpool bathtub with the 34-99633-K Programmable Bath Control — a modern control box designed to replace aging, failed, or discontinued whirlpool bath controls while adding flexible operating modes, a built-in 20-minute timer, and air-button activation.

This control is especially valuable for compatible Gemini Plus whirlpool pumps. When set to Configuration 4, it can allow certain Gemini Plus pumps to operate as a three-speed pump simply by plugging the pump into the control box.

Why This Control Is a Smart Upgrade

• Gemini Plus pump upgrade: Configuration 4 can provide low, medium, and high-speed operation on compatible Gemini Plus pumps.
• Built-in safety timer: 20-minute automatic shutoff helps protect the system and provides convenient timed operation.
• Four selectable programs: Configure the control box to match different whirlpool bath setups and operating needs.
• Air-button activation: Designed for simple pneumatic on/off control from the tub deck.
• Ideal retrofit solution: A strong option for replacing obsolete whirlpool bathtub controls.

Gemini Plus 3-Speed Pump Compatibility

One of the biggest advantages of the 34-99633-K control box is its ability to work with many compatible Gemini Plus pumps. In Configuration 4, the control can command compatible Gemini Plus pumps through three operating speeds, giving the customer more control over jet intensity without replacing a compatible pump.

Important: Three-speed operation depends on pump compatibility and proper configuration inside the control box. Contact Whirly Bros before ordering if you would like help confirming fitment.

Operating Programs

• Program 1: Three-speed operation with 20-minute timer and purge cycle.
• Program 2: Multi-speed operation with 20-minute timer and purge cycle.
• Program 3: Standard on/off operation with built-in 20-minute timer.
• Program 4: Three-speed operation with 20-minute timer and no purge cycle. Commonly used for compatible Gemini Plus pump upgrades.

Specifications

• Part Number: 34-99633-K
• Control Number: 99633
• Voltage: 120 VAC
• Amperage: 13.5 Amp
• Frequency: 60 Hz
• Timer: 20-minute automatic timer
• Activation: Air button operated
• Application: Whirlpool bathtub control systems

Why Buy From Whirly Bros?

Whirly Bros specializes in whirlpool bathtub replacement parts, retrofit systems, pumps, blowers, keypads, and control boxes. We help homeowners, plumbers, contractors, hotels, and property managers identify the correct replacement parts for discontinued and hard-to-find whirlpool bath systems.

If you are replacing an old control box or upgrading a Gemini Plus pump setup, our team can help verify compatibility before you order.