⭐ Sundance® / Jacuzzi® 6600-779 880 Series Spa Circuit Board (1 or 2-Pump, 2016 – 03/2018 Touch Screen Platform)

The OEM circuit board for Sundance® 880 Series touch-screen-platform hot tubs manufactured from 2016 through March 2018 — 1- or 2-pump configurations (excluding Maxxus® and Aspen®).

📋 Product Overview

The Sundance® / Jacuzzi® 6600-779 is the OEM main circuit board for 2016 through 03/2018 Sundance® 880 Series hot tubs using the SunTouch™ touch-screen control platform — the third-generation 880 Series architecture that introduced Sundance®’s illuminated i-Touch Glass control panel with SunSmart 2.0 WiFi connectivity. This board covers every 2016 – 03/2018 880 Series model except Maxxus® and Aspen® (which use a different 3-pump board) and supports both 1-pump and 2-pump configurations on a single board, making it the correct replacement for Altamar®, Cameo®, Capri®, Marin®, Optima®, Majesta®, Vistamar®, Constellation®, Victoria®, Constance®, and 10/2016+ Kingston® and Claremont® models built within the 2016 – 03/2018 production window.

The 2016+ 880 Series platform (Sundance® system designation SD8780) is a complete control-architecture redesign from the earlier 880 NT (6600-390 / 6600-392) and 880 LCD (6600-728 / 6600-730) platforms. It pairs exclusively with touch-screen topside panels — primarily the 6600-446 (now superseded by the 6600-510 in 2020), and also compatible with 6600-340, 6600-341, and 6600-369. Non-touch-screen topside panels from earlier 880 platforms are NOT compatible with the 6600-779.

⚠️ This board is specifically for 2016 through 03/2018 production. Spas manufactured 04/2018 and later use the successor 6600-386 board, which is NOT interchangeable with the 6600-779. Verify your spa’s manufacturing date on the data plate before ordering. ⚠️ This board does NOT cover 3-pump Maxxus® or Aspen® models — those spas use a separate 3-pump board. ⚠️ This board is NOT backward-compatible with pre-2016 880 Series spas. Earlier 880 NT (6600-390) or 880 LCD (6600-728 / 6600-730) platforms use different boards and different topside panels.

✨ Key Features

• ✅ Genuine OEM Sundance® / Jacuzzi® replacement – factory-new circuit board
• ✅ 880 Series SunTouch™ / SD8780 platform – engineered for the 2016+ touch-screen control architecture
• ✅ Covers 1-pump AND 2-pump configurations – single board with jumper-selectable pump count
• ✅ Broad 2016 – 03/2018 model coverage – Altamar®, Cameo®, Capri®, Marin®, Optima®, Majesta®, Vistamar®, Constellation®, Victoria®, Constance®, plus 10/2016+ Kingston® and Claremont®
• ✅ Touch-screen topside support – pairs with 6600-446 (or current 6600-510), 6600-340, 6600-341, 6600-369
• ✅ 60 Hz North American Board – purpose-built for US / Canadian market spas
• ✅ Non-returnable – spa circuit boards are final sale
• ✅ Covered by manufacturer’s limited warranty

🔧 Technical Specifications

Specification	Value
OEM Part Number	6600-779
Platform	Sundance® 880 Series SunTouch™ (SD8780)
Manufacturing Date Range	2016 through 03/2018
Frequency	60 Hz (North American Board)
Pump Support	1-pump OR 2-pump configurations
Excluded Pump Config	3-pump (Maxxus® / Aspen®) – not compatible with this board
Matching Topside — Primary	6600-446 (original 2016+ SunTouch™ Touch Screen Control Panel)
Matching Topside — Current	6600-510 (2020+ revision of 6600-446)
Additional Compatible Topsides	6600-340, 6600-341, 6600-369
Topside Architecture	SunTouch™ i-Touch Glass Touch Screen with SunSmart 2.0 WiFi
Successor Board (04/2018+)	6600-386 (NOT interchangeable with 6600-779)
Lead Time	7–10 days (this is a specialty current-production OEM board)
Non-Returnable	✅ Yes — final sale
Warranty	Manufacturer’s limited warranty

📌 Electrical supply voltage is spa-model-specific. 2016 – 03/2018 880 Series Sundance® spas are typically configured for 240 V / 60 Hz service in the North American market, with the specific amperage and heater configuration listed on the data plate inside the equipment bay. Always verify against your data plate before connecting power. No universal voltage/amperage rating is published for the bare 6600-779 PCB by the manufacturer, because the configuration depends on the spa model’s installed heater, pumps, and service supply.

🔗 Compatibility Guide

Covered 2016 – 03/2018 Sundance® 880 Series Models (1-Pump and 2-Pump)

Model	Notes
♨️ Altamar®	2016 – 03/2018, 2-pump configuration
♨️ Cameo®	2016 – 03/2018, 2-pump configuration
♨️ Capri®	2016 – 03/2018
♨️ Marin®	2016 – 03/2018
♨️ Optima®	2016 – 03/2018, 2-pump configuration
♨️ Majesta®	2016 – 03/2018
♨️ Vistamar®	2016 – 03/2018
♨️ Constellation®	2016 – 03/2018
♨️ Victoria®	2016 – 03/2018
♨️ Constance®	2016 – 03/2018
♨️ Kingston®	10/2016 – 03/2018 (model introduced October 2016)
♨️ Claremont®	10/2016 – 03/2018 (model introduced October 2016)

Matching Topside Panels

Part Number	Description
6600-446	Original 2016+ SunTouch™ Touch Screen Control Panel — i-Touch Glass design with SunSmart 2.0 WiFi (primary pairing for the 6600-779)
6600-510	2020+ revision/replacement of the 6600-446 — current production topside (backward-compatible with the 6600-779)
6600-340	Additional 2016+ topside option (compatible with 6600-779)
6600-341	Additional 2016+ topside option (compatible with 6600-779)
6600-369	Additional 2016+ topside option (compatible with 6600-779)

⚠️ Non-touch-screen topside panels from earlier 880 platforms (6600-860 LCD trapezoid, 6600-854 / 6600-882 / 6600-425) are NOT compatible with the 6600-779. The SunTouch™ platform uses a different communication protocol than the older NT / LCD platforms.

NOT Compatible — Use a Different Board

Your spa	Correct Replacement
❌ Sundance® 880 Series manufactured 04/2018 or later	6600-386 (successor board — NOT interchangeable with 6600-779)
❌ 2016 – 03/2018 880 Maxxus® or Aspen® (3-pump)	Different 3-pump board required — contact Parts4Tubs for identification
❌ 2008 – 2015 Sundance® 880 NT 2-Pump (with PermaClear®)	6600-390 (880 NT platform, IC Processor Rev. 1.1A)
❌ 2005 – 2015 Sundance® 880 NT Maxxus® / Aspen® 3-Pump	6600-392 (880 NT 3-pump, IC Processor Rev. 3.1A)
❌ 2005 – Mid 12/2009 Sundance® 880 LCD Series (1-speed P1)	6600-728 (880 LCD platform)
❌ 2005 – Mid 12/2009 Sundance® 850/880 LCD (2-speed P1)	6600-730 (850/880 LCD platform)
❌ Sundance® 680 / 780 Series	6600-720 (no circ) or 6600-726 (with circ) depending on spa configuration
❌ Jacuzzi® J-Series (J-200 / J-300 / J-400 / J-LX / J-LXL)	Different J-Series board required — contact Parts4Tubs for identification

🎛️ Board Functions & Platform Notes

SunTouch™ Platform Architecture

The 6600-779 is built for the third-generation 880 Series control architecture introduced in 2016 — commonly referred to as the SunTouch™ platform or SD8780 system. It represents a ground-up redesign from earlier 880 platforms:

• 880 LCD Platform (2005 – Mid 12/2009): Boards 6600-098 / 6600-161 / 6600-180 → current 6600-728 (1-speed P1) or 6600-730 (2-speed P1); paired with 6600-860 LCD trapezoid topside
• 880 NT Platform (2008 – 2015): Boards 6600-164 / 6600-176 → current 6600-390 (2-pump) or 6600-392 (3-pump Maxxus/Aspen); paired with 6600-854 / 6600-882 / 6600-425 topsides
• 880 SunTouch™ / SD8780 Platform (2016 – 03/2018): Board 6600-779 (1- or 2-pump); paired with 6600-446 / 6600-510 touch-screen topside ← THIS BOARD
• 880 Post-SunTouch™ Platform (04/2018+): Board 6600-386 (successor); NOT interchangeable with 6600-779

These four platforms share 880 Series model names but are not interchangeable — the control architecture is different at every level (board, topside, and communication protocol).

Controlled Outputs

Output	Function
Pump 1	Primary jet pump (per 880 Series factory configuration)
Pump 2	Secondary jet pump (for 2-pump configurations — configurable via board setup)
Circulation Pump	Per 880 Series factory-installed circulation pump
Heater	880 Series flow-through heater (per spa model’s installed heater)
Lighting	OEM 880 Series LED lighting
Topside Interface	SunTouch™ i-Touch Glass touch-screen communication (6600-446 / 6600-510 primary)
WiFi Module	SunSmart 2.0 WiFi (via topside pairing)

Configuration

The 6600-779 and its matching touch-screen topside are configured at the factory for each specific 880 Series spa model and pump count. Setup values are stored in the topside panel’s firmware and synchronized with the board on initial power-up. The SunTouch™ i-Touch Glass panel handles user-facing configuration (temperature setpoints, filter cycles, jet pump settings, lighting modes) through its touch-screen menu system.

🛠️ 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 spa is a Sundance® 880 Series manufactured between 2016 and 03/2018 (check the data plate inside the equipment bay)
• [ ] Confirm your spa is NOT a Maxxus® or Aspen® (3-pump) — these use a different board
• [ ] Confirm your spa has a 1-pump or 2-pump configuration
• [ ] Verify your topside panel is a SunTouch™ touch-screen model (6600-446, 6600-510, 6600-340, 6600-341, or 6600-369) — older non-touch topsides will NOT work with this board
• [ ] Note your existing board part number (the failed 6600-779 you are replacing)
• [ ] 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, harness, and connector position before removing the old board
• [ ] Inspect the temperature and hi-limit sensors — replace at the same time if aging or corroded
• [ ] Plan for a 7–10 day lead time on this board — it is a specialty current-production OEM part

Electrical Requirements (US)

Requirement	Specification
Supply Voltage	Per spa data plate (typically 240 V / 60 Hz for 2016+ US 880 Series)
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: The SunTouch™ topside panel uses a digital communication protocol that is different from the older 880 NT (6600-854 / 6600-882 / 6600-425) and 880 LCD (6600-860) panels. If you see a blank or garbled display on first power-up after installing the 6600-779, the most common cause is an incompatible topside panel — verify you are using one of the compatible touch-screen topsides listed above.

⚠️ 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 US 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

Platform / Compatibility Safety

• ⚠️ Do NOT install the 6600-779 on a 2018 spa manufactured after March 2018 — the successor 6600-386 is required for 04/2018+ production and is NOT interchangeable
• ⚠️ Do NOT install the 6600-779 on a 2016+ Maxxus® or Aspen® (3-pump) — a different board is required
• ⚠️ Do NOT pair this board with an older non-touch-screen 880 topside panel — the SunTouch™ platform uses a different communication protocol
• ⚠️ Do NOT install on a pre-2016 880 Series spa — earlier 880 NT and 880 LCD platforms use fundamentally different boards and topsides

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 the SunTouch™ touch-screen topside displays correctly on first power-up
• ⚠️ Verify the SunSmart 2.0 WiFi module connects and pairs with your home network (if previously configured)
• ⚠️ Test the hi-limit function and GFCI trip before allowing bathers in the spa
• ⚠️ Monitor for fault codes during the first 24 hours of operation

🔍 Error Codes & Troubleshooting

Common Sundance® 880 SunTouch™ Platform Codes

Code	Meaning	Basic Troubleshooting
FLO	Pressure / flow switch fault	Clean filter; check plumbing blockages; inspect flow switch
OH / OHH / OHS	Overheating detected	Allow water to cool; verify circulation flow; check temperature sensor
Sn1	Hi-limit sensor malfunction	Check sensor connection; reset spa; replace sensor if out of spec
Sn3	Heater deactivated	Inspect heater breaker; test heater element continuity
ICE	Freeze-risk condition detected	Verify heater function; raise setpoint; check ambient temperature
Cool	Water temperature more than 20°F below setpoint	Verify heater operation; confirm heater breaker
Topside disconnect / blank display	Communication loss between board and SunTouch™ panel	Verify topside cable connection; confirm topside is a 6600-446 / 6600-510 / 6600-340 / 6600-341 / 6600-369

⚠️ Fault code behavior on the SunTouch™ platform is displayed through the touch-screen interface and may vary slightly based on spa model and topside firmware revision. Consult your spa’s owner’s manual for model-specific diagnostics.

🎯 Ideal Applications

Application	Suitability	Notes
♨️ 2016 – 03/2018 Sundance® 880 Altamar®, Cameo®, Optima®, Marin®, Majesta® (2-pump)	✅ Direct OEM replacement	Pair with 6600-446 / 6600-510 touch-screen topside
♨️ 2016 – 03/2018 Sundance® 880 Capri®, Vistamar®, Constellation®, Victoria®, Constance®	✅ Direct OEM replacement	1- or 2-pump per spa configuration
♨️ 10/2016 – 03/2018 Sundance® 880 Kingston® or Claremont®	✅ Direct OEM replacement	Kingston/Claremont models debuted October 2016
🛁 2016 – 03/2018 Maxxus® or Aspen® (3-pump)	❌ Not compatible	Different 3-pump board required — contact Parts4Tubs
🛁 04/2018+ Sundance® 880 Series	❌ Not compatible	Use 6600-386 instead (successor; not interchangeable)
🛁 Pre-2016 Sundance® 880 NT 2-pump with PermaClear®	❌ Not compatible	Use 6600-390
🛁 Pre-2016 Sundance® 880 NT 3-pump Maxxus®/Aspen®	❌ Not compatible	Use 6600-392
🛁 Pre-2010 Sundance® 880 LCD Series	❌ Not compatible	Use 6600-728 or 6600-730
🛁 Spa with non-touch-screen topside	❌ Not compatible	Older topsides cannot communicate with the SunTouch™ platform

🤔 Frequently Asked Questions

Q: My spa is a 2017 Sundance® Optima®. Is the 6600-779 the right board? A: Yes, if your Optima® was manufactured between 2016 and March 2018. Check the data plate inside the equipment bay for the exact manufacturing date. If your spa was manufactured in April 2018 or later, you need the successor 6600-386 board instead.

Q: My spa is a 2018 Sundance® 880 Altamar®. Will this board fit? A: It depends on the month of manufacture. The 6600-779 covers 2018 production through March 2018. If your Altamar® was manufactured in 04/2018 or later, you need the 6600-386 board — the successor — which is NOT interchangeable with the 6600-779. Check the data plate carefully.

Q: I have a 2017 Maxxus®. Can I use the 6600-779? A: No. The 6600-779 covers 1- or 2-pump 880 Series models only. Maxxus® and Aspen® are 3-pump configurations and require a different board. Contact Parts4Tubs with your spa’s exact model, manufacturing date, and original board part number and we will identify the correct 3-pump replacement for your spa.

Q: My spa has a touch-screen control panel — is that the right indicator this board is correct? A: The SunTouch™ i-Touch Glass touch-screen panel (6600-446 / 6600-510) is a key indicator that your spa is on the 2016+ 880 platform. Combined with an original equipment manufacturing date between 2016 and 03/2018, and a 1- or 2-pump configuration (not Maxxus/Aspen), the 6600-779 is the correct replacement.

Q: Can I use this board with my older 880 Series topside panel? A: No. If your existing topside is an older 880 NT (6600-854 / 6600-882 / 6600-425) or 880 LCD (6600-860) panel, it will NOT work with the 6600-779 board. The SunTouch™ platform uses a different communication protocol. If you are replacing a board from an older platform with a 6600-779, you would effectively be doing a complete platform conversion — this is not a straightforward swap and is not generally recommended.

Q: What is the SD8780 designation? A: SD8780 is Sundance®’s internal system designation for the 2016+ 880 Series SunTouch™ control platform — the generation that introduced the touch-screen topside and SunSmart 2.0 WiFi connectivity.

Q: Does this board include WiFi? A: The WiFi functionality (SunSmart 2.0) is built into the SunTouch™ topside panel (6600-446 / 6600-510), which communicates with the 6600-779 board. When paired, the system provides remote control and monitoring via Sundance®’s SunSmart 2.0 app.

Q: How long is the lead time on this board? A: Typical lead time is 7–10 days, as this is a specialty current-production OEM board that is not always kept in immediate stock. Contact Parts4Tubs for the most up-to-date availability.

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 6600-779 is the genuine OEM Sundance® / Jacuzzi® replacement board, factory-new from the manufacturer.

✅ Why Choose the 6600-779

• ✅ Genuine OEM Sundance® / Jacuzzi® replacement board
• ✅ Covers all 1- and 2-pump 2016 – 03/2018 Sundance® 880 Series models (except Maxxus®/Aspen®) in one current part
• ✅ Pairs seamlessly with the SunTouch™ i-Touch Glass touch-screen platform and SunSmart 2.0 WiFi
• ✅ Direct-fit mounting for 2016 – 03/2018 880 Series equipment bays
• ✅ 60 Hz North American specification
• ✅ Backed by the Sundance® / Jacuzzi® manufacturer’s limited warranty

🇺🇸 Why Buy From Parts4Tubs

• ✅ US-based company with local support for Sundance® and Jacuzzi® spa owners
• ✅ Fast US shipping once in stock (7–10 day lead time on this board)
• ✅ Expert help identifying whether your 880 Series spa is on the 2016 – 03/2018 SunTouch™ platform, an older 880 NT or 880 LCD platform, or the post-03/2018 generation — and therefore whether you need the 6600-779, 6600-386, 6600-390, 6600-728, 6600-730, or a 3-pump Maxxus/Aspen board
• ✅ Competitive pricing on current OEM boards
• ✅ Full manufacturer warranty support
• ✅ Matching companion parts in stock — 6600-446 / 6600-510 SunTouch™ touch-screen topside panels, temperature sensors, and related 2016+ 880 Series service parts
• ✅ Help coordinating board + touch-screen topside replacement and pairing with SunSmart 2.0 WiFi

⭐ Summary

The Sundance® / Jacuzzi® 6600-779 is the OEM circuit board for 2016 through 03/2018 Sundance® 880 Series hot tubs on the SunTouch™ touch-screen platform (SD8780 architecture) — covering Altamar®, Cameo®, Capri®, Marin®, Optima®, Majesta®, Vistamar®, Constellation®, Victoria®, Constance®, and 10/2016+ Kingston® and Claremont® models in 1- or 2-pump configurations. This board does NOT cover 3-pump Maxxus® or Aspen® models, and is NOT interchangeable with the post-03/2018 successor board 6600-386. It pairs with the touch-screen topside panels 6600-446 (original) or 6600-510 (2020+ current version), and is NOT compatible with older non-touch-screen 880 topside panels from earlier 880 NT or 880 LCD platforms. 60 Hz North American board; 7–10 day lead time; non-returnable; manufacturer’s limited warranty. Verify spa manufacturing date and model before ordering.

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.