CAST-201-01-01-03D Variable-Speed Blower Control Replacement
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Set this Balboa 99633 replacement to Program #2 (green LED).
CAST-201-01-01-03D Variable-Speed Blower Control Replacement
This programmable Balboa 99633 control replaces the discontinued NuWhirl CAST-201-01-01-03D used with 120V variable-speed air blowers.
Not sure which CAST-201 version you have? Read our NuWhirl CAST-201 Control Replacement Guide before ordering.
Program #2 provides the correct operation:
- Variable/multi-speed blower control
- 20-minute automatic shutoff
- Automatic purge cycle after use
| Original control | Replacement setting | Indicator |
|---|---|---|
| CAST-201-01-01-03D | Program #2 | Green LED |
Before use: The control may arrive in a different program. Confirm the LED is green for Program #2.
Optional Remote Control
Add convenient in-tub control with the Balboa 99638 waterproof wireless remote. Sold separately and can be paired now or added later.
Important Compatibility Limits
- For CAST-201-01-01-03D variable-speed blower systems.
- Does not directly replace 03A controls with a 2-minute pump timer.
- Does not replace Jason AST-201-01-01-02 controls with a 24-hour timer.
Control box only. Air button, tubing, and wireless remote are sold separately.
Unsure about your label? Call or text (951) 897-1878 and send us a photo before ordering.
NuWhirl, CAST-201, Jason, Balboa, and related part numbers are used only for identification and compatibility reference. Whirly Bros is not affiliated with or endorsed by the referenced bathtub manufacturers.

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