Hayward Aqua Solar Pool Control with low voltage output | GL-235
Hayward Products
SKU: HPPGL235
Hayward GL-235 Solar Pool Controller
Part Number: GL-235
Description
The GL-235 is a differential temperature controller designed for solar assisted pool and spa heating systems. It automates the diversion of water through solar panels or bypass circuits based on real-time collector and pool temperatures.
Compatibility & Fitment
- Works with 120 V or 240 V input power and supports 12 V or 24 V actuator output.
- Used in solar pool heating systems that integrate collector sensors and pool sensors for automatic control.
- Ideal when upgrading to automatic solar control or replacing an existing GL-235 or equivalent differential controller.
Features & Specifications
- Single-dial selection for desired pool/spa temperature (70 °F to 104 °F).
- Automatic functions include differential heating (on at ~4 °F difference, off at ~1.5 °F difference), optional nocturnal cooling, and selectable freeze-recirculation protection.
- LED indicators for power, heating mode, cooling mode and sensor fault.
- Low-voltage output for valve actuator; optional high-voltage output for control of a booster pump or filter pump in GL-235-HV variant.
- Enclosure rated for outdoor mounting with durable weather-protective design.
Installation Notes
Mount the controller vertically with knockouts facing downward, at least five feet horizontally from the pool edge. Connect input power (120/240 V), connect two collector and pool sensors, wire the actuator or pump as required, set the desired temperature dial, and test the system in AUTO mode. Confirm that the valve or pump activates when the collector temperature exceeds pool temperature by the set differential.
Maintenance Tip
Annually verify sensor accuracy, check operation of the valve or pump output, inspect the LED indicators and wiring connections, and ensure the enclosure remains sealed. Replace the controller if LED indicators show sensor faults or failing logic.
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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