Flow Switch 2560-040 (Q-12DS-C2) - Flow Sensor Replacement for Sundance Spa, Jacuzzi, & Sweetwater Hot Tubs - OEM Grade Plug & Play with Complete Install Kit, Fixes FLO / FL1 / FL2 Errors

FlowTrust 2560-040 Flow Switch Assembly — Engineered for Reliability, Tested for Every UnitWhen your Sundance, Jacuzzi, or Sweetwater hot tub displays FLO, FL1, or FL2 error codes and the heater stops working, you need a replacement flow switch that works the first time, installs in minutes, and lasts. FlowTrust was designed from the ground up to solve the problems that plague aftermarket flow switches: cracked housings, defective sensors, and missing install hardware.Why CPVC Changes EverythingMost aftermarket flow switches use generic plastic that cracks under heat cycling and chlorine exposure. FlowTrust uses CPVC (chlorinated polyvinyl chloride), the same material used in commercial hot water plumbing. With a minimum wall thickness of 3mm and a one-piece molded body with no glued barbs or epoxy joints, the FlowTrust tee housing handles continuous water temperatures up to 60 degrees Celsius and pressures up to 4 bar (60 PSI) without developing stress cracks.Every Unit Tested Before It ShipsEach FlowTrust flow switch undergoes individual quality inspection before packaging. The pressure test applies 4 bar of water pressure for a full minute, verifying zero leaks and zero cracks. The electrical test confirms the internal sensor correctly detects water flow (closes the circuit when flow is present, opens when flow stops). Units that fail either test do not ship. A dated QC card with inspector code is included in every box.Everything You Need in One BoxFlowTrust ships as a complete, ready-to-install assembly: flow switch with pre-wired 60 inch cable and 2-pin curled finger connector, clear CPVC tee housing with directional flow arrow, 3 stainless steel hose clamps, PTFE teflon tape (pre-threaded for convenience plus an extra roll), 5 zip ties for wire harness management, and a printed instruction manual with QR code linking to a step-by-step video installation guide. No extra trips to the hardware store. No guessing.Compatible Sundance Spa Models680 Series (09/2020+, Hartford, Hawthorne, Burlington with circulation pump, Alicia, Prado, Tacoma) | 780 Series (03/2020+, Dover, Hanover, Montclair, Camden, Certa, Chelsee, Hamilton, Palermo, Bahia, Cayman) | 880 Series (2016+, Maxxus, Aspen, Optima, Cameo, Altamar, Marin, Capri, Cambria) | 980 Series (10/2016+, Kingston, Claremont, Lisbon, Odessa) | Select Series (2011+, Constance, Victoria)Compatible Jacuzzi Hot Tub ModelsJ-500 Series (2015+) | J-400 Series (09/2015+) | J-300 Convertible (2016+) | J-300 Standard (02/2020+) | J-300 LED (2002 to 2015, curled finger connectors) | J-200 and J-100 (10/2020+) | J-320, J-330, J-340 (2002 to 2003) | J-335, J-345 (2004+) | J-355, J-365, J-375 (2007+) | J-230, J-270, J-280 with circulation pump (2007+) | JLX, JLXL (2011+)Compatible Sweetwater Spa ModelsAll 2003 to 2004 Sweetwater models including Palermo, Bahia, and Cayman.Important: Connector Type VerificationThis flow switch uses curled finger connectors. It is NOT compatible with models that use square finger connectors, including the 800, 850, and 800 series. Please verify your connector type before ordering.Backed by a 12 Month WarrantyRegister your FlowTrust flow switch to activate a 12 month warranty covering leakage and defects with free replacement. If it leaks, we replace it. Scan the QR code inside the box or visit the registration link in your instruction manual.Stop paying for service calls. Stop gambling on untested parts. FlowTrust gives you OEM-grade reliability at an aftermarket price, backed by the only individual unit testing program in the category. Your spa deserves a part that was tested before it was packed. Add to cart and get back to relaxing.

• FIXES FLO, FL1, OR FL2 ERROR CODE - These codes appear when your spa controller stops detecting water flow from the circulation pump. Replacing the 2560-040 flow switch restores flow detection and allows the heater to fire again. FlowTrust uses an OEM-calibrated sensor so the switch opens and closes at the correct flow threshold, eliminating false error codes from a mis-set sensor.
• ONE-PIECE CPVC BODY, 3MM+ WALL THICKNESS - FlowTrust is molded from CPVC, the same chlorine-resistant thermoplastic used in commercial hot water plumbing systems. Minimum 3mm wall thickness throughout. Clear housing lets you visually confirm water flow and inspect for debris without disassembly. Rated for continuous water temperatures up to 60C and 4 bar (60 PSI) operating pressure. No glued barb joints.
• EVERY UNIT PRESSURE TESTED AND ELECTRICALLY VERIFIED - Each FlowTrust switch passes a 4 bar (60 PSI) hydrostatic pressure test for a full minute with zero leaks, plus electrical testing confirming the sensor opens and closes at the correct flow threshold. Units that fail either test do not ship. A dated QC inspection card is packed in every box. Backed by a 12 month warranty with free replacement.
• COMPLETE ASSEMBLY, READY TO INSTALL - Includes flow switch with pre-wired 60 inch wiring harness and curled finger connector, clear CPVC tee housing, 3 stainless steel hose clamps, PTFE teflon tape (pre-threaded roll plus extra), 5 zip ties for wire routing, and a printed instruction manual with QR code linking to a video installation guide. No additional hardware needed. 20 to 30 minute install.
• FITS SUNDANCE 680, 780, 880, 980, SELECT SERIES AND JACUZZI J-SERIES - Sundance: Alicia, Prado, Tacoma, Hartford, Hawthorne, Burlington, Dover, Hanover, Montclair, Camden, Certa, Chelsee, Hamilton, Palermo, Bahia, Cayman, Maxxus, Aspen, Optima, Cameo, Altamar, Marin, Capri, Cambria, Kingston, Claremont, Constance, Victoria. Jacuzzi: J-100, J-200, J-300, J-400, J-500, JLX, JLXL. Sweetwater 2003 to 2004. NOT compatible with 800 or 850 series square finger connector models.