Hayward Aqua Solar Pool Control | GLC-2P-A
Hayward Products
SKU: GLC-2P-A
Hayward Goldline GLC-2P-A Solar Pool Heating Control System (GL-235 Controller + 3-Way Valve, Actuator & Sensors)
The Hayward GLC-2P-A is an automatic solar pool heating control system package built around the Hayward/Goldline GL-235 differential temperature controller. It automatically turns solar heating on and off by driving a 24V valve actuator when your roof/collector temperature is warmer than the pool water, helping maximize free solar heat while preventing unwanted heat loss.
What’s Included
- GL-235 solar controller (microprocessor-based)
- 3-way diverter valve (commonly 2" / 2-1/2" valve body configuration)
- 24V valve actuator for automatic diverting to/from the solar collectors
- (2) 10K temperature sensors (typically water sensor + solar/collector sensor)
Key Functions & Features
- Differential temperature control to automatically collect solar heat only when it’s available
- Selectable high limit to prevent overheating beyond your set point
- Nocturnal cooling (selectable) to help cool the pool at night during hot weather (when conditions allow)
- Freeze protection (recirculation mode) to help protect plumbing/collectors in cold conditions (system dependent)
- Status LEDs for quick system indication and troubleshooting
Typical Applications
- In-ground pool solar heating systems using roof/ground-mount collectors
- Systems that control solar flow with a motorized 3-way valve
- New installs or upgrades replacing an older/failed solar controller package
Installation Notes
- Mount the collector sensor where it reads true panel temperature (not shaded or directly influenced by roof vents).
- Install the water sensor in a representative location per controller instructions for accurate temperature control.
- Confirm valve orientation and actuator cam settings so “Solar ON” and “Solar OFF” positions are correct.
- Electrical wiring and bonding/grounding should follow local code and manufacturer instructions.
Related Products
- Hayward/Goldline GL-235 Solar Controller (search)
- Hayward GVA-24 Valve Actuator (search)
- Solar Temperature Sensors (10K) (search)
- 3-Way Diverter Valves (2"/2-1/2") (search)
- Solar Check Valves (search)
- 2" Unions & Repair Unions (search)
Maintenance Tips
- At the start of each season, confirm the actuator fully turns the valve to the correct positions (Solar ON/OFF) without binding.
- If solar heating seems inconsistent, check sensor placement and wiring first—bad sensor readings are a common cause of poor control.
- Inspect roof/collector plumbing for air leaks or vacuum breaks that can reduce flow and heating efficiency.
- Keep filters clean—solar systems depend on adequate flow to transfer heat properly.
- If you use nocturnal cooling, verify it’s enabled only when desired; it can lower pool temperature intentionally at night.
Questions about returns? View our return policy.
Hours Of Operation:
Monday - Friday: 8:00 am to 4:00 pm Phoenix Time
Saturday and Sunday: Closed
- Orders costing more than $300 WILL be required to have signature confirmation upon delivery.
- Handling time is typically only 1 day.
- Any item ordered after 1pm Phoenix time, may not ship same-day.
- Call us if you require expedited shipping and we can give you quotes based on your needs.
Return Policy:
- All products, except as noted below, are eligible for return up to 30 days after receipt of item.
- For returns, an RMA form must be filled out HERE or customers can call for additional help.
- Shipping costs will be deducted from all returned items.
- Any item that is missing accessories, original packaging, or is not returned in the same condition that it was received in, may be subject to a re-stocking fee up to 100% based on the condition we receive it in.
- Items broken, damaged, or inoperable due to installer error will not be refunded.
- Fill out the return form or give us a call to obtain an RMA and return shipping label.
- There are no returns on the Pentair Colorsync 618031
- No returns on pool cleaners.
- No returns on opened seals and o-rings.
- No returns on capacitors.
- If a light is returned because it "doesn't work" and it tests fine, the cost to ship and a re-stocking fee will be deducted from the refund.
- All products denied upon arrival at customers house WILL be charged the cost to ship.
- Visa Gift Card Promotions: Gift cards are sent within 14 days of the order. When accepting the Visa Gift card, you agree that if your order is returned or refunded, this amount will be deducted from the refunded amount. All Visa Gift cards are sent via email in an E-Gift Card format and are non refundable.
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