🔌 Sundance® / Sweetwater® / Jacuzzi® 6600-720 LX-15 Spa Circuit Board (No Circulation Pump, Chip Rev. 5.57+)

The current OEM replacement PCB for Sundance® LX-15, Sweetwater®, Jacuzzi® J-200 LED, and Jacuzzi® J-100 LED spa systems WITHOUT a dedicated 24-hour circulation pump — shipping with the current Chip Revision 5.57+ that supersedes every earlier 5.xx chip revision in the family.

📋 Product Overview

The Sundance® / Sweetwater® / Jacuzzi® 6600-720 is the current OEM main circuit board for spa systems built on the LX-15 / Sweetwater® control platform without a 24-hour circulation pump. Factory-supplied with the current Revision 5.57+ chip, this board is a direct, drop-in replacement for a long chain of discontinued OEM part numbers — 6600-083, 6600-087, 6600-287, 6600-046, plus the older original-era part numbers 3-60-0095, 6600-201, and 6600-204. It is fully compatible with every spa originally built around those legacy boards.

The 6600-720 controls 1-pump or 2-pump non-circ LX-15 platform spas (pump count jumper-selectable), drives the heater, spa lighting, ozonator output, and reads temperature + hi-limit sensors via the BWG-style 4-pin sensor connection. Current-revision 6600-720 boards feature surface-mount heater terminals for improved long-term connection reliability. The board covers a wide range of Sundance® 680 / 780 Series models (Palermo®, Bahia®, Burlington®, Hartford®, Hawthorne®, Hamilton®, Chelsee®, Certa®, Camden®, Peyton®, Edison®, McKinley®, Ramona® — non-circ configurations only), multiple Jacuzzi® J-200 LED Series models, Jacuzzi® J-100 LED 2-pump models (2017), and Del Sol® LED Series spas (Hermosa® / Redondo®).

⚠️ This board does NOT operate a 24-hour circulation pump. Spas equipped with a dedicated circ pump require the 6600-726 instead (the chip-family companion with Rev. 3.61+ microprocessor logic for circ pump operation). The quick diagnostic: if your existing chip label begins with “5” (e.g., 5.03, 5.54, 5.57, 5.59, 5.60), you have a non-circ system and the 6600-720 is correct. If your chip begins with “3” (e.g., 3.26, 3.54, 3.56, 3.61), you have a circ-pump system and need the 6600-726 instead.

⚠️ Do NOT confuse this board with the 6600-728 / 6600-730 / 6600-392 family (Sundance® 850/880 LCD platform) — these are entirely different boards for different spa platforms. The 6600-720 is the LX-15 / Sweetwater® platform board.

⭐ Key Features

• ✅ Current OEM Sundance® / Sweetwater® / Jacuzzi® replacement – factory-new with current Rev. 5.57+ chip
• ✅ Wide replacement coverage – direct drop-in for 6600-083, 6600-087, 6600-287, 6600-046, 3-60-0095, 6600-201, 6600-204
• ✅ Non-circ pump LX-15 platform – purpose-built for 1-pump and 2-pump LX-15 spas without a dedicated circulation pump
• ✅ Multi-brand compatibility – Sundance® Spas (680 / 780 Series), Sweetwater® Spas, Jacuzzi® Hot Tubs (J-200 / J-100 LED Series), Del Sol® Spas
• ✅ Jumper-configurable pump amperage logic – 15 A or 50 A via Jumper 1
• ✅ Jumper-configurable pump count – 1-pump or 2-pump operation via Jumpers 2 and 3
• ✅ °F / °C display toggle – via Jumper 4 (factory OFF = °F for US market)
• ✅ Surface-mount heater terminals on current revision for reliable heater connections
• ✅ Compatible with 6600-682 topside panel – the LX-15 Sweetwater® 5-button LED panel
• ✅ Chip-family rule for quick identification – chip begins with “5” = 6600-720 (no circ); chip begins with “3” = 6600-726 (with circ)
• ✅ Supersedes all earlier 5.xx chip revisions – 5.03, 5.54, 5.57, 5.58, 5.59, 5.60 families all consolidated under the current part
• ✅ 6-month manufacturer’s limited warranty

🔧 Technical Specifications

Specification	Value
OEM Part Number	6600-720
Also Listed As	SUN6600-720, SD6600-720
Platform	Sundance® LX-15 / Sweetwater® control system
Circuit Board Type	Main PCB – non-circulation-pump
Current Chip Revision	Rev. 5.57+ family
Chip Family Coverage	Rev. 5.57+, supersedes 5.60, 5.59, 5.58, 5.54, 5.03
Current Revision Start Date	Approximately 06/2009 (Rev. 5.57+ production era)
Pump Support	1-pump or 2-pump (jumper-selectable via Jumpers 2 and 3)
Circulation Pump	❌ Not supported – use 6600-726 for circ-pump spas
Pump Amperage Logic	15 A or 50 A (Jumper 1)
Heater Terminals	Surface-mount (current revision)
Display Scale	°F / °C (jumper-selectable via Jumper 4)
Compatible Topside	Sundance® 6600-682 (LX-15 Sweetwater® 5-button LED)
Sensor	BWG (Balboa Water Group) 4-pin: 96″ temperature lead (3/8″ dia) + 31″ hi-limit lead (1/4″ dia)
Transformer (replacement part)	Sundance® 115V / 230V to 12V transformer
Companion Board (With Circ Pump)	6600-726 (Rev. 3.61+) — same LX-15 platform, circ-pump variant
Non-Returnable	✅ Yes — final sale
Warranty	6-month manufacturer’s limited warranty

📌 Supply voltage is spa-model-specific. Sundance®, Sweetwater®, Jacuzzi®, and Del Sol® LX-15 spas ship with a range of electrical configurations — some models are 120 V convertible, others are 240 V dedicated. Always verify against your spa’s data plate before connecting power. No universal voltage/amperage rating is published for the bare 6600-720 PCB by the manufacturer — the configuration depends on your specific spa’s installed heater and service supply.

🔗 Compatibility Guide

Legacy OEM Boards Replaced by the 6600-720

Legacy OEM PN	Platform / Chip	Status
6600-083	Original Sweetwater® / LX-15	Discontinued — replaced by 6600-720
6600-087	LX-15 / Sweetwater®, EPROM Rev. 5.03	Discontinued — replaced by 6600-720
6600-287	LX-15 / Sweetwater® / J-200 LED, EPROM Rev. 5.54 (introduced ~2002)	Discontinued — replaced by 6600-720
6600-046	LX-15 / Sweetwater® / J-200 LED, EPROM Rev. 5.58 / 5.59	Discontinued — replaced by 6600-720
3-60-0095	Original Sundance® dealer PN (SD LX-15 Main Alpha, Rev. 5.03)	Discontinued
6600-201	Early LX-15 variant, Rev. 5.03	Discontinued
6600-204	LX-15 variant, Rev. 5.03	Discontinued

📌 Chip-family identification rule: If your existing board has a software chip label beginning with “5” (e.g., 5.03, 5.54, 5.58, 5.59, 5.60), the 6600-720 is the correct replacement. If your chip label begins with “3” (e.g., 3.26, 3.54, 3.56, 3.61), your spa has a circulation pump — order the 6600-726 instead. The 5-series and 3-series boards are physically similar but the chips configure fundamentally different pump/heater logic.

Compatible Sundance® / Sweetwater® Spa Models (Non-Circ Pump)

Series / Model	Years	Notes
♨️ Sweetwater® Palermo®, Bahia®	2000 – 2002	2-pump, no circ; original 6600-087 EPROM Rev. 5.03 and 6600-287 EPROM Rev. 5.54 configurations
♨️ Sundance® 680 Burlington® (2-pump)	2006 – 2007	2-pump, no circ
♨️ Sundance® 680 Burlington® (1-pump)	2008+	1-pump, no circ
♨️ Sundance® 680 Hartford®, Hawthorne®	2007+	Non-circ configurations
♨️ Sundance® 680 Hartford®, Hawthorne®, Peyton®	2012+	Non-circ configurations
♨️ Sundance® 680 Hartford®, Hawthorne®	2013 – 05/2014	Non-circ configurations
♨️ Sundance® 680 Edison®, Peyton®	01/2014+	Non-circ configurations
♨️ Sundance® 680 McKinley®, Ramona®	06/2014+	Non-circ configurations
♨️ Sundance® 780 Hamilton®, Chelsee®, Certa®, Camden®	2007+	1-pump non-circ configurations (per shared LX-15 PCB family)

Compatible Jacuzzi® J-200 LED Series Spa Models (Non-Circ Pump)

Series / Model	Years	Notes
♨️ Jacuzzi® J-200 LED – J-230	2005 – 2011	Without circulation pump
♨️ Jacuzzi® J-200 LED – J-210	2005 – 2017	Convertible models (120V / 240V)
♨️ Jacuzzi® J-200 LED – J-220	2005 – 2008	Convertible models
♨️ Jacuzzi® J-200 LED – J-270, J-280	2007 mid-year – 2011	Without circulation pump
♨️ Jacuzzi® J-200 LED – J-215, J-225	2016 – 2017	1-pump, no circ
♨️ Jacuzzi® J-200 LED – J-235, J-245, J-275, J-280	2014 – 2017	2-pump, no circ

Compatible Jacuzzi® J-100 LED Series Spa Models

Series / Model	Years	Notes
♨️ Jacuzzi® J-100 LED – J-125, J-135	2017	2-pump

Compatible Del Sol® Spa Models

Model	Notes
♨️ Del Sol® Hermosa®, Redondo®	Del Sol® LED Series, all years

NOT Compatible — Use a Different Board

Spa Configuration	Correct Replacement
❌ Spa with 24-hour circulation pump (chip label begins with “3”)	6600-726 (circ pump variant, Rev. 3.61+)
❌ 2018+ Jacuzzi® J-100 / J-200 Series models	6600-268 (microprocessor-based, 2018+ J-100/J-200 current board)
❌ Sundance® 850 Series (1997–2005) 2-speed P1 with PermaClear®	6600-730
❌ Sundance® 880 Series with PermaClear® circulation pump (2 × 1-speed P1)	6600-728
❌ Sundance® 880 NT System 2-pump (2008+)	6600-390
❌ Sundance® 880 NT Maxxus® / Aspen® 3-pump	6600-392
❌ Jacuzzi® J-300 LCD Series (2002–2006)	6600-730 (2-pump) or 6600-101 (3-pump J-380/J-385)
❌ Jacuzzi® J-400 LCD Series (2006–Mid 12/2009)	6600-728 (1-speed P1) or 6600-730 (2-speed P1)
❌ Jacuzzi® J-300 LED Series (2014–2015 CLEARRAY)	6600-297 (2-pump) or 6600-296 (1-pump)
❌ Sundance® / Jacuzzi® LX-10 platform	6600-722 (LX-10 non-circ) or 6600-724 (LX-10 with circ)

Compatible Companion Parts

Component	Part Number	Notes
Topside control panel	Sundance® 6600-682	LX-15 Sweetwater® 5-button LED panel (Light, Pump 1, Pump 2, Down, Up)
Sensor	BWG 4-pin sensor	96″ temp (3/8″ dia) + 31″ hi-limit (1/4″ dia)
Transformer	Sundance® transformer	115V / 230V to 12V

⚠️ Always confirm your chip revision and circulation-pump status before ordering. A 6600-720 will not operate a spa with a circulation pump, and a 6600-726 will not operate a spa without one — they use fundamentally different microprocessor logic despite being on the same LX-15 platform.

🎛️ Board Functions & Controls

Jumper Settings

Jumper	Function	ON	OFF
Jumper 1	Pump amperage logic	15 A	50 A
Jumper 2	Pump count	2 pumps	1 pump
Jumper 3	Used in conjunction with Jumper 2	(follow Jumper 2 setting guidance)	(follow Jumper 2 setting guidance)
Jumper 4	Temperature display scale	Celsius (°C)	Fahrenheit (°F) — US default

📌 Jumper 1 usage: Set based on your spa’s specific pump amperage. This selects the internal pump-relay current-handling logic — not the spa’s main service amperage.

📌 Jumpers 2 and 3: Configure the board to match the physical pump count in your spa. Incorrect jumper setting will cause pump outputs to be misread by the topside panel or fail to activate Pump 2.

📌 Jumper 4: OFF = Fahrenheit display (US default). ON = Celsius display (export markets and Canadian preference).

Controlled Outputs

Output	Capability
Pump 1	1-speed or 2-speed jet pump (per spa’s factory configuration)
Pump 2	1-speed or 2-speed jet pump (activated when Jumper 2 is ON)
Heater	Spa-specific flow-through heater (output matches spa’s factory heater configuration)
Light	LED or incandescent (per spa configuration)
Ozonator	Supported (per spa’s factory configuration)
Circulation Pump	❌ Not supported — use 6600-726 instead

Chip Family Hierarchy

The 6600-720 ships with the current Rev. 5.57+ chip family. The chip supersedes all earlier 5.xx revisions:

Chip Revision	Historical Board	Status
Rev. 5.57+ (current)	6600-720	Active OEM
5.59	6600-046	Discontinued → 6600-720
5.58	6600-046	Discontinued → 6600-720
5.54	6600-287	Discontinued → 6600-720
5.03	6600-087 / 3-60-0095 / 6600-201 / 6600-204	Discontinued → 6600-720

All of these older chip revisions are fully backwards compatible with the current 6600-720, meaning the new board with Rev. 5.57+ will operate spas originally built with any earlier 5-series chip in this family.

🛠️ Installation Requirements

⚠️ IMPORTANT: Spa circuit board installation must be performed by a licensed electrician in compliance with NEC (National Electrical Code) Article 680 and all local codes. A permit may be required in your jurisdiction.

Pre-Installation Checklist

• [ ] Confirm your chip revision begins with “5” (5.03, 5.54, 5.58, 5.59, or 5.60) — if it begins with “3”, you need the 6600-726 instead
• [ ] Confirm your spa does NOT have a 24-hour circulation pump
• [ ] Note your existing board’s part number (6600-083, 6600-087, 6600-287, 6600-046, 3-60-0095, 6600-201, or 6600-204)
• [ ] Verify your topside panel is the Sundance® 6600-682 (LX-15 Sweetwater® 5-button LED) or compatible alternative
• [ ] Disconnect all power at the main breaker and the external GFCI disconnect box
• [ ] Wait at least 5 minutes for capacitors to fully discharge
• [ ] Photograph every wire and connector position before removing the old board
• [ ] Inspect and replace the BWG 4-pin temperature / hi-limit sensor (96″/31″) if aged or discolored
• [ ] Inspect the transformer (Sundance® 115V/230V to 12V) and replace if faulty

Electrical Requirements (US)

Requirement	Specification
Supply Voltage	Per spa data plate (120 V or 240 V — varies by model and configuration)
Frequency	60 Hz (US standard)
GFCI Protection	Required (NEC Article 680)
Ground / Bonding	Mandatory equipment grounding and bonding per NEC Article 680
Dedicated Circuit	Required
Disconnect Box	Required within line of sight of spa (per NEC)
Wire Gauge	Per spa data plate and NEC ampacity tables

💡 Installation tip: Before removing the old board, label every wire and harness with its position. Older 6600-087 and 6600-287 boards have slightly different terminal layouts than current 6600-720 revisions (which use surface-mount heater terminals). Photograph both sides of the old board for reference. The current 6600-720 is a direct physical fit but the heater terminal type may look different.

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⚠️ Safety Warnings

Electrical Safety

• ⚠️ ALWAYS disconnect power at both the main breaker and the exterior GFCI disconnect box before any work
• ⚠️ Licensed electrician only — NEC Article 680 and most local codes require it
• ⚠️ Verify GFCI protection is installed and tested
• ⚠️ Equipment grounding and bonding must comply with NEC Article 680
• ⚠️ Never operate the spa with the electrical compartment cover removed
• ⚠️ Do NOT use this board on a spa with a 24-hour circulation pump — order 6600-726 instead
• ⚠️ Verify jumper settings match your spa’s pump count and amperage before powering on

Jumper Configuration Safety

• ⚠️ Verify Jumper 1 matches your spa’s pump amperage (15 A or 50 A) — mis-setting can cause nuisance tripping or overloaded pump relays
• ⚠️ Verify Jumpers 2 and 3 match your pump count (1-pump or 2-pump) — incorrect setting will cause Pump 2 to not activate or cause topside miscommunication
• ⚠️ Verify Jumper 4 is OFF for US °F display (default)

Water & Electrical Safety

• ⚠️ Ensure no water ingress into the control box during installation
• ⚠️ Inspect all gaskets and seals; replace if damaged
• ⚠️ Never touch any electrical component with wet hands

Post-Installation

• ⚠️ Verify both Pump 1 AND Pump 2 operate correctly (if 2-pump)
• ⚠️ Verify heater cycling is correct and temperature regulation is stable
• ⚠️ Test the hi-limit function and GFCI trip before allowing bathers in the spa
• ⚠️ Monitor the topside panel for any fault codes during the first 24 hours of operation

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🔍 Error Codes & Troubleshooting

Common Indicator Codes (Sundance® / Sweetwater® LX-15 Platform)

Code	Meaning	Basic Troubleshooting
FLO	Pressure / flow switch fault	Clean filter; check for plumbing blockages; inspect flow switch
OH / OHS	Overheating detected	Allow water to cool; verify flow; check thermostat
Sn1	Hi-limit sensor malfunction	Check sensor connection; reset; replace BWG 4-pin sensor if faulty
Sn3	Heater deactivated	Inspect heater breaker; test heater element continuity
ICE	Freeze-risk condition	Verify heater function; raise setpoint; insulate equipment
Cool	Water temperature significantly below setpoint	Adjust heater settings; confirm heater operation
Pump 2 not responding	Jumper 2 / Jumper 3 mis-set, or topside command issue	Verify Jumper 2 = ON for 2-pump configuration; test Pump 2 wiring

⚠️ Fault code behavior may vary slightly depending on the specific Sundance® / Sweetwater® / Jacuzzi® / Del Sol® spa model and its topside panel firmware. Consult your spa’s owner’s manual for model-specific diagnostics.

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🎯 Ideal Applications

Application	Suitability	Notes
♨️ Sundance® 680 / 780 Series non-circ spa replacing a 6600-087 or 6600-287	✅ Direct OEM replacement	Chip Rev. 5.57+ family
♨️ Sweetwater® Palermo® / Bahia® (2000 – 2002) 2-pump non-circ	✅ Direct OEM replacement	Original 6600-087 / 6600-287 configuration
♨️ Jacuzzi® J-200 LED spa (no circ) replacing a 6600-287 or 6600-046	✅ Direct OEM replacement	Covers J-210 / J-220 / J-230 / J-270 / J-280 / J-235 / J-245 / J-275 / J-215 / J-225
♨️ Jacuzzi® J-100 LED 2-pump (2017)	✅ Direct OEM replacement	J-125, J-135
♨️ Del Sol® Hermosa® / Redondo®	✅ Direct OEM replacement	All years
♨️ Sundance® 680 Edison®, Peyton®, McKinley®, Ramona® (non-circ)	✅ Direct OEM replacement	2012+ non-circ configurations
🛁 Spa with 24-hour circulation pump	❌ Not compatible	Use 6600-726 instead
🛁 2018+ J-100 / J-200 spa	❌ Not compatible	Use 6600-268 instead
🛁 Sundance® 850/880 LCD or NT platform	❌ Not compatible	Use 6600-728 / 6600-730 / 6600-390 / 6600-392 depending on specific variant
🛁 LX-10 platform spa	❌ Not compatible	Use 6600-722 (no circ) or 6600-724 (with circ)

🤔 Frequently Asked Questions

Q: How do I tell if I need the 6600-720 (no circ) or the 6600-726 (with circ)? A: Look at the software chip label on your existing board. If it begins with a “5” (e.g., 5.03, 5.54, 5.58, 5.59, 5.60), you have a non-circulation-pump system and the 6600-720 is correct. If it begins with a “3” (e.g., 3.26, 3.54, 3.56, 3.61), you have a circulation-pump system and need the 6600-726 instead. You can also check whether your spa has a separate small pump running 24 hours (the dedicated circ pump) — not to be confused with your main 2-speed jet pump.

Q: My existing board is a 6600-087. Will the 6600-720 replace it? A: Yes. The 6600-720 (current Rev. 5.57+ chip) is the factory-designated OEM replacement for the 6600-087 (EPROM Rev. 5.03), 6600-287 (Rev. 5.54), and 6600-046 (Rev. 5.58/5.59). All share the same mounting footprint. Current revisions of the 6600-720 have surface-mount heater terminals, which are more reliable than the spade connectors on older revisions.

Q: My board says 6600-046 with Chip Rev 5.59. Can I just order another 6600-046? A: The 6600-046 has been discontinued. The 6600-720 with current Rev. 5.57+ chip is the direct replacement — it is fully backwards compatible with your existing 5.59 configuration.

Q: My board is labeled “LX-15 3-60-0095”. What is this? A: That is the original Sundance® dealer part number for the earliest LX-15 boards (also sold as 6600-201 and 6600-204). All of these are superseded by the current 6600-720.

Q: Does this board work with my Sweetwater® Palermo® / Bahia® spa? A: Yes, if your spa does not have a 24-hour circulation pump. The 6600-720 covers the 2000 – 2002 Sweetwater® Palermo® and Bahia® 2-pump non-circ systems that originally used the 6600-087 with Rev. 5.03 chip or the 6600-287 with Rev. 5.54 chip.

Q: Will my existing 6600-682 topside panel still work? A: Yes. The Sundance® 6600-682 LX-15 Sweetwater® 5-button LED topside panel (light / Pump 1 / Pump 2 / Down / Up) is the matching topside for this board family and is fully compatible.

Q: What sensor does this board use? A: The 6600-720 uses a Balboa Water Group (BWG) 4-pin combination sensor: 96″ temperature lead (3/8″ diameter) plus 31″ hi-limit lead (1/4″ diameter). This is a different sensor from the Sundance®/Jacuzzi® 6600-167 / 6600-168 LCD-series sensors used on other board platforms (6600-726, 6600-728, 6600-730, 6600-101).

Q: My Jacuzzi® is a 2018 J-225. Will this board work? A: No. The 6600-720 covers 2016–2017 J-215 / J-225 models, but 2018+ Jacuzzi® J-100 and J-200 Series spas transitioned to a microprocessor-based 6600-268 board. Contact Parts4Tubs with your spa’s year and existing board part number to confirm the correct current replacement.

Q: What’s the difference between the 6600-720 and the 6600-728 / 6600-730 / 6600-392? A: These are all entirely different boards for different spa platforms:

• 6600-720 (this board) = Sundance® / Sweetwater® LX-15 platform (680/780 Series, Sweetwater®, Jacuzzi® J-200 LED, Del Sol®), no circ pump
• 6600-728 / 6600-730 / 6600-392 = Sundance® 850/880 LCD platform (Altamar®, Cameo®, Maxxus®, Optima®, Majesta®, Marin®, Capri®) with PermaClear® and circ pump

The 6600-720 and 6600-728/730/392 share no physical interchangeability and are not cross-replacements.

Q: Do I need a licensed electrician to install this? A: Yes. NEC Article 680 and most US local jurisdictions require a licensed electrician for all hot tub electrical work, and a permit may be required. Improper installation can cause fire, electrocution, or equipment damage.

Q: Is this an OEM or aftermarket board? A: The 6600-720 is the genuine OEM Sundance® / Jacuzzi® replacement board, shipped directly from the manufacturer with the current Rev. 5.57+ chip installed.

Q: What warranty is included? A: The board carries the manufacturer’s limited warranty of 6 months. Contact Parts4Tubs for full warranty terms.

✅ Why Choose the 6600-720

• ✅ Genuine OEM Sundance® / Sweetwater® / Jacuzzi® replacement – factory-new with current Rev. 5.57+ chip
• ✅ Covers a wide chain of legacy part numbers in one current part (6600-083, 6600-087, 6600-287, 6600-046, 3-60-0095, 6600-201, 6600-204)
• ✅ Surface-mount heater terminals on current revision for reliable heater connections
• ✅ Direct-fit mounting footprint – same as the boards it replaces
• ✅ Jumper-configurable for 1-pump or 2-pump, 15 A or 50 A pump logic, °F or °C display
• ✅ Multi-brand compatibility across Sundance® 680/780 Series, Sweetwater®, Jacuzzi® J-200 LED, Jacuzzi® J-100 LED, and Del Sol® LED Series
• ✅ Backed by Sundance®’s 6-month manufacturer’s limited warranty

🇺🇸 Why Buy From Parts4Tubs

• ✅ Fast US shipping
• ✅ Expert circ-vs-no-circ disambiguation help — the #1 ordering error on this board family is installing a 6600-720 (no circ) on a spa with a circ pump, or a 6600-726 (with circ) on a non-circ spa. Send us a photo of your existing chip label or your spa’s pump compartment and we’ll confirm which board is correct before you order.
• ✅ Legacy chain expertise — we handle the full 6600-083 → 6600-087 → 6600-287 → 6600-046 → 6600-720 transition across three decades of LX-15 / Sweetwater® spa production
• ✅ Competitive pricing on current OEM boards
• ✅ Full manufacturer warranty support
• ✅ Matching companion parts in stock — BWG 4-pin sensors (96″/31″), LX-15 Sweetwater® transformer, 6600-682 topside panel, and related electrical components
• ✅ Platform-history expertise across all Sundance®/Jacuzzi® spa lineages — LX-15 (this board family), LX-10 (6600-722/724), 850/880 LCD (6600-728/730/392), 880 NT (6600-390/392), 880 SunTouch™ (6600-779), J-300 LCD (6600-101/730), J-300 LED (6600-297), and 2018+ microprocessor (6600-268)

⭐ Summary

The Sundance® / Sweetwater® / Jacuzzi® 6600-720 is the current OEM replacement circuit board for Sundance® LX-15, Sweetwater®, Jacuzzi® J-200 LED, Jacuzzi® J-100 LED (2017 2-pump), and Del Sol® LED spa systems WITHOUT a 24-hour circulation pump. Shipping with the current Rev. 5.57+ chip family (superseding 5.03, 5.54, 5.58, 5.59, and 5.60 historical revisions), it directly replaces the legacy OEM boards 6600-083, 6600-087, 6600-287, 6600-046, and the older dealer part numbers 3-60-0095, 6600-201, and 6600-204. Covers Sundance® 680/780 Series models including Palermo®, Bahia®, Burlington®, Hartford®, Hawthorne®, Peyton®, Edison®, McKinley®, Ramona®, Hamilton®, Chelsee®, Certa®, Camden®, plus Jacuzzi® J-210, J-215, J-220, J-225, J-230, J-235, J-245, J-270, J-275, J-280, J-125, J-135, and Del Sol® Hermosa® / Redondo®. Jumper-configurable for 1-pump or 2-pump operation at 15 A or 50 A, with °F / °C display toggle. Features surface-mount heater terminals on the current revision. Pair with the Sundance® 6600-682 5-button LED topside panel and BWG 4-pin sensor (96″/31″). For spas with a 24-hour circulation pump (chip label starts with “3”), use the 6600-726 instead. For 850/880 platform spas, use the 6600-728 / 6600-730 / 6600-390 / 6600-392 depending on variant. For 2018+ J-100/J-200 spas, use the 6600-268. Non-returnable; 6-month manufacturer’s limited warranty.

Finding and identifying a replacement Hot Tub Circuit Board (PCB)

If you are looking to replace a failed PCB on your Hot Tub’s spa pack, then quite often identifying the part that you need can be the hardest thing.

Firstly, you are looking for a model number on the actual circuit board itself. Having the model or serial of your hot tub is not going to help at this point, you need to find the number on the PCB itself.

Now, with certain brands of PCB, the number of the replacement PCB that you need is not going to match identically the one you are replacing. Why is that I hear you ask?

Well, normally, it is an updated version. This means that it might have updated firmware on the PCB or be a later revision. Normally, this means that the part number would be slightly different. This is usually indicated with a “12345678 -x” at the end of that part number where x indicated a firmware revision.

In some cases, there will be some following letters on the part number of the circuit board, “12345678 -x MAS” this can indicate that the PCB was used for an OEM meaning it was produced for a certain hot tub manufacturer and the letters identify the manufacturer.

This means if you source an original PCB, it will not have the letters, but will in most cases work just fine.

It can be confusing I know!

What if you can’t find a model number?

If you can’t find a model number on the PCB itself, then you need to look for a model number on the spa pack. Normally, there is a sticker on the outside of the spa pack that tells you the current ratings and input voltages etc and this will have a model number.

In general, most spa packs in the USA are manufactured by Balboa, Hydro-Quip, ACC or Gecko. I know I am generalising here, but if you have a spa pack that has the brand of your hot tub on, it will be an OEM so the key is identifying who made the original box.

From there, you can normally find an original PCB that you will be able to switch out.

For example, the Balboa VS (value series) is a very popular spa pack that has been used by multiple hot tub manufacturers under their own brand names. Whatever they have called it, strip it back and it is still a Balboa VS.

Visual Inspection

One of the most important things you can do when you are looking for a replacement is to visually inspect the PCB that you have versus the picture online of the replacement you are considering. They need to look the same even if there are the differences in firmware revisions or OEM part numbers, you should be visually replacing a PCB that looks like the one you have.

Configuring a replacement Hot Tub Circuit Board (PCB)

When you get a new PCB, you are more than likely going to need to configure it. Most PCBs have a number of different modes and setups that the can operate in. For this, you will need to manual or spec sheet to guide you.

For things like DIP switches, most of the time you can copy the settings from your original circuit board. You are looking for things like setting the voltage as a lot of PCBs can be configured to run on both 115V and 230V.

You may need to move jumpers or even wires to configure voltages – the key here is that you read the schematic and don’t expect the PCB to just work out of the box – it usually doesn’t.

Troubleshooting a Hot Tub Circuit Board (PCB)

Here are some common things you will see when you replace a PCB on a hot tub.

You press the buttons on the topside control and they don’t control the right parts (pumps or blower etc) – this is a mode configuration thing and you will either need to change some DIP switches on the PCB or an internal or low level programming mode on the topside control. Check the manual for how to do this.

You turn on the hot tub and it trips the breaker – it is not common for a new PCB to fail out of the box (I have not seen one yet!) However, a common mistake is that the voltage has not been set correctly. If it is set for 115V and then you try and turn it on, the current draw will be a lot more (twice) than expected and the breaker will trip.

To check this, unplug all of your kit – heater, pumps, blower and then turn on the PCB. If it trips with nothing plugged in, usually the voltage is incorrectly set and what is happening is that live current is being sent to the ground – because you have 4 wires into the PCB rather than 3. Current on the ground loop causes the trip. Check the settings to make sure it is configures for 230V.

It might not trip until you physically turn on a pump or a blower. As mentioned, if the pack is set to 115V and your pump is meant for 230V, it will draw twice the current at half the voltage and trip your breaker. Check the manual for info on how to set the voltage.