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Marquis Spa - Circuit boards-

Genuine Marquis Spa Circuit Boards: Repair Parts That Get Your Hot Tub Running Again

When your Marquis spa stops heating, won't cycle jets, or throws error codes, chances are the circuit board is to blame. Western Tub and Pool stocks genuine and OEM-compatible Marquis Spa Circuit Boards, sourced from trusted manufacturers like Balboa Water Group, to get your spa back online fast.
[Shop and order at Western Tub and Pool]

 

Why Your Circuit Board Matters

The circuit board is the brain of your hot tub. It controls your heater, pumps, lights, and safety systems, so a failing board can knock out your entire spa in one go. Rather than replacing the whole unit, a compatible circuit board swap is usually the fastest, most affordable fix.

What Sets Our Parts Apart

  • Genuine and Cross-Referenced Options: We carry OEM Marquis boards along with verified Balboa cross-reference equivalents, so you get a part that fits, whether your original is still in production or long discontinued.
  • Decades of Model Coverage: From 1990s Oasis and Spirit models to current Signature, Vector, and E-Series spas, we help you find the right match for your spa's age and configuration.
  • Support From Real Technicians: Not sure which board you need? Our team helps you cross-reference chip numbers, part numbers, and serial numbers before you buy.

 

Marquis Spa Circuit Boards We Carry

600-6315 (MQBP20UX-BS Series)

  • Chip Number: MQBP20UXR3B
  • Balboa Part Number: 59199
  • Replaces: 600-6307 and 600-6314
  • Compatible Models: All Signature Series spas (2013-2019), all 2-pump E-Series spas (2015-2019), and all Vector Series spas with Microsilk (2015-2019)
  • Note: As of April 2018, Marquis consolidated domestic spa packs to this board, with a setup option to match your spa's configuration.

600-6293 (LZM2UR1B)

  • Chip Number: LZM2UR1B
  • Balboa Number: 54343
  • Replaces: 600-6288
  • Compatible Models: 2006 Quest, Ult630, Ult530, Ult418, Ult315, 630, 530, 418, 315, Retreat, Rendezvous; 2007 Quest, 641R, 520M, 744E, 319S, Ult630, Ult530, Ult418, Ult315, 630, 530, 418, 315, Retreat, Rendezvous, Envy/Envy II; and all 2008 models

Additional Boards & Cross-References Available

Our catalog also includes:

  • 600-6262 – 1998-1999 models (chip R3E)
  • 600-6284 – 2004 models (chip 53326)
  • 600-6289 – 2005 models (chip MQ2KUR1A / 53579)
  • 600-6298 – 2009 models (chip 54278)
  • 600-6302 (MQL15U) – All 2011-2012 Signature Series spas
  • 600-6245 – 1995 Oasis MTS I and Spirit MTS models, also used in select 2009-2010 spas
  • 600-6224, 600-6242, 600-6246, 600-6253, 600-6254, 600-6259, 600-6282, 600-6283 – Legacy boards for earlier Spirit, Coastal, Recreational, and MTS series spas
    This is not an exhaustive list. If your part number isn't listed above, check our full online catalog or contact us directly, chances are we can source it.

 

Compatible Controls & Related Parts

Marquis circuit boards are typically paired with:

  • Topside control panels, including the TP400T 4-Button Topside (650-0717) and SpaTouch 2/3 touchscreen controls
  • Auxiliary panels for pump and Microsilk control (650-0666, 650-0667, 650-0727)
  • Complete spa pack and heater kits (such as the Revolution Control System, 650-0001)
  • Ozonator kits and topside overlays
    If you're replacing a board, it's worth checking whether your topside control or overlay needs attention too. We're happy to help you put together a full parts list in one call.

 

Dimensions & Weight

Circuit board dimensions and shipping weights vary by model and manufacturer batch. Because of this, we don't publish a single universal spec sheet; instead, our team confirms exact measurements once we've identified your specific part number. This ensures you get accurate shipping costs and confirmation the board will fit your existing spa pack housing.

 

Frequently Asked Questions

How do I know which circuit board my Marquis spa needs?

Locate the part number or chip number printed directly on your existing board, usually found near the center on a large chip. If you can't locate it, we can identify your board using your spa's make, model, and serial number.

What's the difference between a part number and a chip number?

The part number (like 600-6315) refers to the manufactured board assembly. The chip number (like MQBP20UXR3B) refers to the programmed chip mounted on that board, which determines your spa's specific settings. Both are useful for finding the correct match.

Can I install a Marquis circuit board myself?

Many spa owners with basic electrical comfort can replace a circuit board themselves. That said, we always recommend having a qualified spa technician handle the installation, especially given the safety systems tied to your heater and pumps.

My board is discontinued. What are my options?

Many older Marquis boards have been superseded by updated part numbers. Our team stays current on manufacturer replacement paths, and can point you to the correct modern equivalent, like 600-6315 replacing both 600-6307 and 600-6314.

Do you ship internationally, and does that affect my order?

Yes. As an international e-retailer, we hold inventory across multiple regions. See the shipping note below for details on how this may affect your order.

 

Hard-to-Find Part? We're On It.

Can't locate your circuit board, or not sure if it's still available? Email us directly at fixmytub@gmail.com and our team will track it down.
A Note on International Shipping
Western Tub and Pool operates as an international e-retailer, with warehouses across multiple regions. Because of this, the same part may be stocked in more than one location, and we've added suffixes to part numbers to indicate origin:

  • U – USA
  • C – Canada
  • E – Europe
  • A – Asia
    Some parts may appear duplicated across regions; this is expected, and simply reflects local warehouse stock. Shipping times and costs will vary depending on which region fulfills your order.
    To find your exact part, please have ready:
  • Your part number (if known)
  • A photo of your existing board or control panel
  • Your spa's make, model, and serial number
    Send this information to fixmytub@gmail.com or call us at 1-855-248-0777, and we'll match you with the correct part, wherever it ships from.
    [Shop and order at Western Tub and Pool]
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