Harwil Corporation Replacement Flow Switch for Hayward Goldline GLX-FLO-RP, 15-Foot Cable — Q-12DS-C2 Compatible

Harwil's original replacement flow switch (Q-12DS-C2) restores proper water flow sensing for Hayward Goldline systems and includes a 15-foot cable for flexible installation.

If your Hayward Goldline-equipped salt chlorinator or automation controller is showing "NO FLOW" or "LOW FLOW" errors after you’ve checked the pump, basket and filter, a faulty flow switch is often the culprit. This Harwil-made GLX-FLO-RP replacement is built to be compatible with a wide range of chlorine generator and automation models so you can return your system to reliable operation without replacing the entire control assembly.

How will this flow switch fix my "NO FLOW" or "LOW FLOW" alarm?

Replacing a worn or failed flow switch restores the signal that tells your chlorine generator when water is moving through the cell. The replacement re-enables chlorine production control and prevents the generator from shutting down due to an absent flow input. Install is straightforward for a qualified pool technician and requires correct orientation and a short straight-run of pipe.

• Harwil model Q-12DS-C2 designed for Hayward GLX-FLO-RP compatibility.
• Three directional arrows on top indicate correct flow alignment.
• Includes a 15-foot cable to reach most control boxes without splicing.
• Must be mounted with at least 12 inches of straight pipe near the chlorine cell when downstream.

Which systems and models is this switch compatible with?

This Harwil replacement was made specifically to replace the Hayward GLX-FLO-RP flow switch and is compatible with a range of Goldline and related chlorinator and automation products. Check your control model before ordering, and confirm the switch orientation and electrical connector match your setup.

• Direct replacement for Hayward Model GLX-FLO-RP.
• Works with Aqua Rite chlorine generators (all models).
• Compatible with Aqua Logic, Aqua Trol (-HP models), Mineral Springs, SplashCLEAR (except -RJ versions), and Naturesoft systems.
• Harwil part number Q-12DS-C2 with 15-foot cable.

What are the practical installation considerations?

Installation is simple but should be performed by a qualified pool professional to ensure electrical and plumbing safety. The switch can mount on either side of the chlorine cell but must be positioned so the arrows align with flow. A clean pipe interior and correct straight-run distance help the switch detect consistent water flow.

• Attach to any side of the chlorine cell, keeping arrows aligned with flow direction.
• Ensure 12 inches of straight pipe if installing downstream of the cell.
• Confirm pump, basket and filter are clean before concluding switch failure.
• Professional installation recommended to protect equipment and warranty.

How do I know when replacement is necessary?

Start with the simple checklist: clean filter, empty pump basket, and verify pump operation. If the control still reports a flow fault, the flow switch is frequently the failed component. Replacing the switch promptly prevents prolonged chlorinator shutdown and maintains proper sanitation control.

• Persistent "NO FLOW" or "LOW FLOW" after basic maintenance indicates switch issues.
• Intermittent production or electrical faults can point to wiring or switch failure.
• Original Harwil design ensures fit and function with Goldline systems.

Who is this for: pool owners and service professionals who use Hayward Goldline or compatible chlorinators and need a reliable, OEM-style flow switch replacement without replacing the entire control panel. If you maintain Aqua Rite, Aqua Logic, Aqua Trol (-HP), Mineral Springs, SplashCLEAR (non-RJ) or Naturesoft systems and need a direct GLX-FLO-RP substitute with a long cable for flexible routing, this Harwil Q-12DS-C2 with 15-foot cable is designed for that purpose.