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: 7:00 am to 5:00 pm Phoenix Time
Saturday: 8:00 am to 2:00 pm
Sunday: Closed
- We do not ship on Saturday or Sunday.
- Orders totaling more than $300 will require signature confirmation upon delivery.
- We process and prepare orders for shipment within 1 business day. Please note that many other pool supply retailers require 3–5 days of handling time before shipping.
- Orders placed after 1:00 pm Phoenix Time may not be eligible for same-day shipment.
- Expedited shipping options are available at checkout.
Return Policy:
- Products that are received damaged will receive a refund in store credit.
- Most products are eligible for return within 30 days of receipt, except where noted below.
- To initiate a return, please complete an RMA form prior to sending your item back.
- Original shipping costs are non-refundable and will be deducted from the return credit.
- Items returned missing accessories or original packaging, or that are not in the same condition as received, may be subject to a restocking fee of up to 100% depending on the condition of the item upon return.
- Some returns will be charged an automatic 15% restocking fee.
- We are unable to issue refunds for items that have been damaged or rendered inoperable due to installer error.
- Please complete the return form to receive your RMA number and return shipping label.
- Chemical products are not eligible for return under any circumstances.
- The Pentair Colorsync 618031 is not eligible for return.
- Pool cleaners are not eligible for return.
- Opened seals and o-rings are not eligible for return.
- Capacitors are not eligible for return.
- Plastic popup tools are not eligible for return.
- Automation components and circuit boards are not eligible for return.
- If a light is returned due to a reported malfunction and is found to be fully operational upon testing, return shipping costs and a restocking fee will be deducted from the refund.
- Orders refused at the time of delivery will be subject to the original shipping costs being deducted from the refund.
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