Sundance® / Jacuzzi® BP2000‑880 EXPDR Daughter Board – 2‑ & 3‑Pump Expansion Module (2024+) Part #6600‑608

Part Number: 6600-608

Brand: Sundance Spas

⚠️ IMPORTANT DISCLAIMER – PLEASE READ BEFORE PURCHASING

• There are no refunds or returns on electronic spa parts.
• Please verify compatibility with your hot tub model before ordering.
• All electronic components are covered under the original manufacturer’s warranty.

Overview

Part 6600‑608 is the OEM BP2000‑880 Expansion Daughter Board used in 2024 and newer Sundance® 880 Series hot tubs to enable operation of 2‑pump and 3‑pump system configurations.

This daughter board works in tandem with the new 6600‑609 main board, which is the official 2024+ 880 system controller. The daughter board expands the BP2000‑880 platform to support additional jet pumps and advanced heater logic required in multi‑pump 880 configurations

Compatible Spa Models & Years

✔ Sundance® 880™ Series – Mid‑01/2024 and Newer

Required for all 60Hz North American 2‑pump and 3‑pump models:

• Maxxus®
• Aspen®
• Optima®
• Cameo®
• Marin®
• Altamar®
• Capri®
• Vistamar®

✔ Pairing Requirement

Must be installed alongside:

• 6600‑609 (Main 880 Board)
  (The 2024+ control system does not support multi‑pump operation without this daughter board.)

✖ Not compatible with:

• Pre‑2024 880 Series (use 6600‑512 / 6600‑514 / 6600‑463 / 6600‑779 instead)
• 780 / 980 / 680 Systems
• European 50Hz systems

Technical Details

• System Platform: Balboa BP2000‑880 (Sundance® proprietary configuration)
• Function: Pump expansion card for multi‑pump systems
• Supported Pumps:
  • Pump 2 – 1‑speed
  • Pump 3 – 1‑speed (if equipped)
• Frequency: 60 Hz (North American models only)
• Mounting: Internal to BP2000‑880 control box; ribbon and harness connector interfaces
• Supported Features:
  • Multi‑pump sequencing
  • Heater interlock logic
  • High‑current relay activation
  • Compatibility with SmartTub®‑enabled main board
• Firmware: Matches 6600‑609 Revision 1.00 (‘23A)

Purpose & Performance

The 6600‑608 EXPDR Daughter Board is critical for:

• Enabling Pump 2 and Pump 3 functions
• Providing safe heater/pump lockout logic
• Supporting Sundance®’s updated 2024 filtration cycles
• Integrating expanded jet configurations in premium 880 models
• Ensuring proper SmartTub® communication with multi‑pump systems

Symptoms resolved by replacing a failed 6600‑608 board include:

• Pump 2 not responding
• Pump 3 not responding (Maxxus only)
• Heater not enabling due to pump/relay conflict
• “Pump Error” or “Watchdog” faults
• Control board unable to detect secondary pumps

Related Components

Ordering Notes

• Required for any 2024+ 880 spa with more than one jet pump.
• Not included with main board 6600‑609 — must be purchased separately.
• Electronics are non‑returnable, regardless of condition.
• Verify your spa’s serial number (Mid‑01/2024+) before purchasing.