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Product Description
Marquis MTS Circuit Board 600-6289 — New Replacement Spa Part
Get your Marquis hot tub back up and running with a genuine, brand-new 600-6289 circuit board. Built for the EL2000 Mach 2.1 control system, this board keeps your MTS-series spa heating, jetting, and running exactly as it should.
Shop and order at Western Tub and Pool
Why This Board Is the Right Fix
Genuine Fit for EL2000 Mach 2.1 Systems
This board uses Balboa's M7 technology, meaning no separate pressure switch is needed. It comes with a Molex-style plug and is designed to mount inside a metal control box—no guesswork, no rewiring headaches.
Brand-New Condition
You're getting a factory-new board, never installed. No refurbished parts, no rolling the dice on a used unit that might fail again in a few months.
Confirmed Cross-Reference Numbers
- Marquis Part Number: 600-6289 (also listed as MRQ600-6289)
- Balboa Part Numbers: 53579 / 53679
- Control Box Number: 53578
- Chip Number: MQ2KUR1A (earlier revision: MQ2KUR1B)
Measure Before You Order — This Step Matters
The 600-6289 and 600-6292 boards look identical and function the same way—but their mounting holes are positioned differently. Installing the wrong one means a board that won't sit right in your control box.
Here's how to check:
Lay a tape measure across the bottom of your existing board, from left to right, and note where the three mounting holes fall:
- First hole: 1/4 inch from the left
- Second hole: 4-1/2 inches from the left
- Third hole: 10 inches from the left
If your measurements match, you're looking at the right board. If your holes are positioned differently, you'll want Circuit Board 600-6292 instead.
Compatible Hot Tub Models and Controls
The 600-6289 was used in Marquis spas built through approximately 2006, most commonly in 2005 model-year units. It's compatible with spas running the EL2000 Mach 2.1 control platform, including:
- Marquis Reward MTS
- Marquis Rendezvous MTS
- Other Marquis MTS-series spas manufactured through 2006
Compatible topside controls:
- Balboa VL600 Series
- Balboa VL701 Series
Not sure if your model matches? Send us a picture of your existing board, along with your hot tub's make, model, and serial number, and we'll confirm the right part for you.
Related Repair Parts You Might Need
While you're servicing your control system, it's worth checking these components too:
- Heater-to-circuit-board cables
- M7 hi-limit and temperature sensor
- Marquis topside control panel (VL600 / VL701 compatible)
- Control box enclosure (53578)
Browse our full catalog or give us a call to make sure you've got everything needed for a complete, one-time repair.
Common Questions About the 600-6289 Circuit Board
How do I know if I need the 600-6289 or the 600-6292?
Measure the mounting holes across the bottom of your current board. If they sit at 1/4 inch, 4-1/2 inches, and 10 inches from the left, you need the 600-6289. Any other spacing means you need the 600-6292 instead.
Is this board new or refurbished?
This is a brand-new, factory-original board. It has never been installed.
What Balboa part numbers does this replace?
It replaces Balboa 53579 and 53679, with control box number 53578 and chip MQ2KUR1A (or the earlier MQ2KUR1B revision).
What hot tub models use this part?
It's designed for Marquis MTS-series spas built through approximately 2006, including 2005 model-year Reward MTS and Rendezvous MTS units, using the EL2000 Mach 2.1 control system.
What if I can't find my part number?
No problem. Send us a picture of your circuit board along with your hot tub's make, model, and serial number, and our team will confirm the correct replacement part.
Do you offer support if this part is hard to find?
Yes. If you're struggling to track down this part or confirm compatibility, email us directly at fixmytub@gmail.com and we'll help you sort it out.
A Note on Shipping and Regional Parts
As an international e-retailer, Western Tub and Pool stocks parts across multiple regional warehouses. Because of this, shipping times and availability can vary depending on where your part ships from. To keep things clear, we've added regional suffixes to our parts:
- U – USA
- C – Canada
- E – Europe
- A – Asia
Note that the same part may appear more than once in our catalog if it's stocked in different regions. If you're ever unsure which listing applies to you, just reach out.
Need Help Finding the Right Part?
Hard-to-find spa parts are our specialty. Send us an email at fixmytub@gmail.com, or check your part number against our online catalog. If you're not sure what you're looking for, send pictures of your existing board along with your hot tub's make, model, and serial number—we'll take it from there.
Shop and order at Western Tub and Pool
Call 1-855-248-0777 or email fixmytub@gmail.com
![Marquis MTS I Circuit Board 600-6219 – In Stock & Ready to Ship
Keep your Marquis spa running strong with a genuine replacement MTS I / MTSL circuit board. Built with the MTSIR1F chip, this board restores full function to your control system fast.
[Shop and order at Western Tub and Pool]
Why Choose the 600-6219 Circuit Board?
A failing circuit board can shut your whole spa down—no heat, no jets, no relaxation. The Marquis 600-6219 circuit board is the direct fix for a wide range of Marquis MTS I and MTSL systems, restoring reliable performance to your hot tub.
Genuine Fit: Engineered specifically for Marquis spas using the MTSIR1F chip, ensuring proper compatibility with your control system.
Proven Reliability: This board has been a trusted replacement part across multiple Marquis model years, from 1994 through 1996.
Fast Turnaround: Available now, so you're not left waiting weeks for your spa to be usable again.
Backed by Experts: Our team at Western Tub and Pool can help confirm fitment before you buy—no guesswork required.
Compatible Hot Tub Models
The Marquis MTS I Circuit Board 600-6219 (Balboa Cross-Reference Number: 51089) is compatible with the following models and years:
1994 Models
Mirage MTS I
Retreat MTS I
Oasis 120v
Oasis 240v
Escapade BS
Escapade SE
Voyage BS
Serenity SE
1995 Models
Mirage BS
Escapade BS
Escapade SE
Voyage BS
1996 Models
Mirage BS
Escapade SE
Also known in the industry as the MTSL Analog Duplex Board or MTSL NO/CC, 3-6 Filter Board, this part is compatible with control systems running the MTSIR1F chip.
Associated & Related Repair Parts
If you're replacing your 600-6219 board, you may also want to check these related Marquis circuit boards, often needed for similar model years and repair jobs:
Marquis Circuit Board 600-6245 (1995 Oasis MTS I and Spirit MTS models)
Circuit Board Marquis HPSL 600-6250
Circuit Board Marquis MTS1CCR1C 600-6224
Marquis Spa PC Board 1994 MTSL CC (MTSICR1B Chip)
Not sure which board matches your spa? Our team can cross-reference part numbers for you—just get in touch.
Frequently Asked Questions
How do I know if the 600-6219 board is right for my spa?
Check your existing circuit board for the part number 600-6219, or look for the MTSIR1F chip designation. If your spa is a 1994–1996 Mirage, Retreat, Oasis, Escapade, Voyage, or Serenity model, this board is likely a match. Still unsure? Send us a photo of your current board along with your spa's make, model, and serial number, and we'll confirm fitment for you.
What's the difference between this board and other Marquis circuit boards?
Marquis produced several circuit board variations across model years and control systems (MTS I, MTS II, HPSL, and more). The 600-6219 is specific to MTS I/MTSL systems using the MTSIR1F chip. If your spa uses a different chip or control system, you'll need a different board—our team can help you identify the correct part.
Do you ship internationally?
Yes. Western Tub and Pool is an international e-retailer with warehouses across multiple regions. Because the same part may be stocked in different regions, we've added suffixes to indicate origin:
U = USA
C = Canada
E = Europe
A = Asia
Please note that shipping times and costs vary depending on the regional warehouse your part ships from. Some products may be listed more than once if stocked in multiple regions.
What if I can't find the exact part I need?
No problem. Hard-to-find parts are our specialty. Email us at fixmytub@gmail.com and our team will track it down for you.
What information should I provide when placing an order?
To make sure you get the correct part the first time, please have the following ready:
Your part number (if known)
Photos of your current circuit board
Your hot tub's make and model
Your hot tub's serial number
This helps us verify compatibility before your order ships, saving you time and avoiding return hassles.
Get the Right Part, the First Time
Don't risk ordering the wrong circuit board for your Marquis spa. Whether you know your part number or need help identifying it, our team is here to make sure you get it right.
Shop and order at Western Tub and Pool, or call us at 1-855-248-0777.
Hard-to-Find Part? We Can Help.
Struggling to track down a discontinued or hard-to-source hot tub part? Send us an email at fixmytub@gmail.com and our team will do the legwork to find it for you.
Remember: check your part number if known, or send us pictures along with your hot tub's make, model, and serial number so we can confirm the exact match for your spa.](https://cdn11.bigcommerce.com/s-b7yzllubsu/images/stencil/500x659/products/4581/6859/600-6219__36141.1789590800.PNG?c=2 "Marquis MTS I Circuit Board 600-6219 – In Stock & Ready to Ship
Keep your Marquis spa running strong with a genuine replacement MTS I / MTSL circuit board. Built with the MTSIR1F chip, this board restores full function to your control system fast.
[Shop and order at Western Tub and Pool]
Why Choose the 600-6219 Circuit Board?
A failing circuit board can shut your whole spa down—no heat, no jets, no relaxation. The Marquis 600-6219 circuit board is the direct fix for a wide range of Marquis MTS I and MTSL systems, restoring reliable performance to your hot tub.
Genuine Fit: Engineered specifically for Marquis spas using the MTSIR1F chip, ensuring proper compatibility with your control system.
Proven Reliability: This board has been a trusted replacement part across multiple Marquis model years, from 1994 through 1996.
Fast Turnaround: Available now, so you're not left waiting weeks for your spa to be usable again.
Backed by Experts: Our team at Western Tub and Pool can help confirm fitment before you buy—no guesswork required.
Compatible Hot Tub Models
The Marquis MTS I Circuit Board 600-6219 (Balboa Cross-Reference Number: 51089) is compatible with the following models and years:
1994 Models
Mirage MTS I
Retreat MTS I
Oasis 120v
Oasis 240v
Escapade BS
Escapade SE
Voyage BS
Serenity SE
1995 Models
Mirage BS
Escapade BS
Escapade SE
Voyage BS
1996 Models
Mirage BS
Escapade SE
Also known in the industry as the MTSL Analog Duplex Board or MTSL NO/CC, 3-6 Filter Board, this part is compatible with control systems running the MTSIR1F chip.
Associated & Related Repair Parts
If you're replacing your 600-6219 board, you may also want to check these related Marquis circuit boards, often needed for similar model years and repair jobs:
Marquis Circuit Board 600-6245 (1995 Oasis MTS I and Spirit MTS models)
Circuit Board Marquis HPSL 600-6250
Circuit Board Marquis MTS1CCR1C 600-6224
Marquis Spa PC Board 1994 MTSL CC (MTSICR1B Chip)
Not sure which board matches your spa? Our team can cross-reference part numbers for you—just get in touch.
Frequently Asked Questions
How do I know if the 600-6219 board is right for my spa?
Check your existing circuit board for the part number 600-6219, or look for the MTSIR1F chip designation. If your spa is a 1994–1996 Mirage, Retreat, Oasis, Escapade, Voyage, or Serenity model, this board is likely a match. Still unsure? Send us a photo of your current board along with your spa's make, model, and serial number, and we'll confirm fitment for you.
What's the difference between this board and other Marquis circuit boards?
Marquis produced several circuit board variations across model years and control systems (MTS I, MTS II, HPSL, and more). The 600-6219 is specific to MTS I/MTSL systems using the MTSIR1F chip. If your spa uses a different chip or control system, you'll need a different board—our team can help you identify the correct part.
Do you ship internationally?
Yes. Western Tub and Pool is an international e-retailer with warehouses across multiple regions. Because the same part may be stocked in different regions, we've added suffixes to indicate origin:
U = USA
C = Canada
E = Europe
A = Asia
Please note that shipping times and costs vary depending on the regional warehouse your part ships from. Some products may be listed more than once if stocked in multiple regions.
What if I can't find the exact part I need?
No problem. Hard-to-find parts are our specialty. Email us at fixmytub@gmail.com and our team will track it down for you.
What information should I provide when placing an order?
To make sure you get the correct part the first time, please have the following ready:
Your part number (if known)
Photos of your current circuit board
Your hot tub's make and model
Your hot tub's serial number
This helps us verify compatibility before your order ships, saving you time and avoiding return hassles.
Get the Right Part, the First Time
Don't risk ordering the wrong circuit board for your Marquis spa. Whether you know your part number or need help identifying it, our team is here to make sure you get it right.
Shop and order at Western Tub and Pool, or call us at 1-855-248-0777.
Hard-to-Find Part? We Can Help.
Struggling to track down a discontinued or hard-to-source hot tub part? Send us an email at fixmytub@gmail.com and our team will do the legwork to find it for you.
Remember: check your part number if known, or send us pictures along with your hot tub's make, model, and serial number so we can confirm the exact match for your spa.")
