💧 Balboa X-P Expander Board — G1900 — Genuine 1-Speed Pump Daughter Board
Made by Balboa, manufacturer part number G1900.
This is the secondary board found in the VS510SZ & VS510DZ control systems used as an additional 1 Speed pump output.Includes new mounting hardware
📏 Specifications
| Specification | Value |
|---|---|
| Brand | Balboa |
| Manufacturer part number | G1900 |
| Catalog description | Balboa X-P Expander Board — G1900 — Genuine 1-Speed Pump Daughter Board |
🔌 Balboa X-P Expander Board — G1900 — Genuine 1-Speed Pump Daughter Board
Adds a single-speed pump output to a Balboa spa control. Genuine Balboa Water Group board, and the current version of the discontinued 53544.
⚙️ Specification
| Brand | Balboa Water Group |
|---|---|
| Our part number | G1900 |
| Board model | X-P |
| Function | Expander (daughter) board — one 1-speed pump output |
| Replaces | 53544 (X-P), no longer manufactured |
| Related part | G1910 — the X-P231 high-amp 1-speed version |
⚠️ This is an expander (daughter) board, not a standalone control board. It mounts inside the spa control box alongside a compatible main board and adds one extra pump output. It cannot run a spa on its own.
❓ X-P or X-P231?
The X-P (this board) switches a 1-speed pump output. The X-P231 (G1910) is the high-amp version, which Balboa’s EL2001 Mach 3 tech sheet describes as providing branch-circuit protection for a high-amp device. If you are replacing an existing board, match the model name printed on it.
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