Hydro-Quip / Balboa ML551 Topside Control Panel – LCD Display with 7ft Cord
Advanced control for Balboa and Hydro-Quip spa systems — clear LCD display, precision control, and dependable performance.
Product Overview
The Hydro-Quip / Balboa ML551 Topside Control Panel is a reliable and versatile replacement designed for use with Balboa EL8000, EL2000, EL1000, and CS8700 control systems. Featuring a bright LCD display, 7 responsive buttons, and a 7-foot cord with an 8-pin Molex connector, this panel provides easy and precise control of your spa’s functions.
The ML551 supports up to 3 pumps when used with EL8000 systems (note: Pump 3 control is available only if no blower is connected; otherwise, an auxiliary panel is required). Designed for simplicity and performance, it comes complete with an overlay and plug-and-play connectivity, ensuring hassle-free installation and dependable operation.
Key Features
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Wide Compatibility: Works with Balboa EL8000, EL2000, EL1000, and CS8700 systems.
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Clear LCD Display: Provides real-time feedback on spa functions and settings.
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User-Friendly Interface: Includes 7 intuitive buttons for controlling pumps, temperature, lights, and auxiliary functions.
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Flexible Use: Supports up to 3 pumps on EL8000 systems (see notes for blower compatibility).
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Plug-and-Play Installation: Simple connection via 7-foot cord with 8-pin Molex connector.
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Overlay Included: Labeled for convenience and easy operation.
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Durable Build: Designed to withstand spa humidity and temperature variations.
Technical Specifications
| Specification | Detail | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | Balboa Water Group / Hydro-Quip | ||||||||||
| Model | ML551 | ||||||||||
| Compatible Systems | EL8000, EL2000, EL1000, CS8700 | ||||||||||
| Display Type | LCD | ||||||||||
| # of Buttons | 7 | ||||||||||
| Topside Type | Electronic | ||||||||||
| Topside Shape | Rectangular | ||||||||||
| Cord Connector Type | Molex, 8-Pin | ||||||||||
| Cord Length | 7 ft | ||||||||||
| Panel Size | 7″ x 3-1/4″ | ||||||||||
| Overlay Included | Yes | ||||||||||
| Pump Support | Up to 3 Pumps (with restrictions on blower use) | ||||||||||
| Compatible Spa Pack Series |
Not for: Balboa BP or VS spa packs (BP packs take TP or spaTouch panels, VS packs take VL panels) |
Uses
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Replacement for Hydro-Quip and Balboa spa systems requiring ML551 control panels.
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Ideal for residential or commercial hot tubs with 1–3 pump configurations.
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Suitable for restoring full functionality to systems with worn, damaged, or unresponsive control panels.
Why Choose This Control Panel
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Genuine Balboa/Hydro-Quip replacement ensuring full system compatibility.
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Bright and clear LCD screen for easy monitoring.
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Durable construction for long-term spa use.
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Easy installation — no rewiring or additional setup required.
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Backed by trusted performance from Balboa Water Group, a leading name in spa control technology.
Summary
The Hydro-Quip / Balboa ML551 Topside Control Panel combines precision, durability, and convenience in a single reliable unit. Its 7-button LCD interface allows effortless control of pumps, lights, and temperature, while its compatibility with leading Balboa systems makes it a versatile replacement option. Whether for maintenance or upgrade, the ML551 ensures smooth, intuitive spa operation for years to come.
🔧 Parts and fittings for this
| Part | Our part number | Availability | Price | ||
|---|---|---|---|---|---|
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Topside Adapter Plate, HydroQuip, Large | 80-0511B-K | 23 in stock | $15.75 | Add to cart |
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Topside Extension Cable, HQ-BWG, 8-Pin Molex, 100ft | 30-11588-100 | 1 in stock | $270.43 | Add to cart |
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Topside Extension Cable, HQ-BWG, 8-Pin Molex, 50ft | 30-11588-50 | 4 in stock | $163.06 | Add to cart |













