Goldline GL235LV Solar Controller Only



Model # GL235LV

By Goldline Controls



Model # GL235LV

Product Description

The GL-235 is designed to meet the need for easy installation, dependable operation, and serviceability. The GL-235 incorporates unique, microprocesser based construction to ensure reliability and accurate performance. The GL-235 offers advanced operating features to provide differential temperature control, selectable high limit, programmable recirculation freeze protection, nocturnal cooling and optional booster pump control.

Automatic Heating If the collectors are warmer than the pool water by 4°or more, and the pool is below the selected desired temperature, the valve will rotate allowing heat collection. This heat collection will stop when the solar sensor falls to within 1.5°F of the pool temperature or the pool temperature exeeds the "desired temperature" set on dial.

Automatic Cooling (Field selectable option) If the collectors are cooler than the pool water by 6°F or more, and the pool is above the selected desired temperature, the valve will rotate allowing cooling via the solar collectors. The heat dissipation will stop when the collectors rise within 3°F of the pool temperature or the pool temperature is lowered below the set desired temperature.

Single Setting for desired temperature The GL-235 logic is set by a single dial adjustment with the desired pool/spa temperatures clearly indicated. The dial is calibrated with the temperatures from 70°F to a high of 104°F for quick and easy, user-friendly operation. The temperature set indicates set pool/spa temperature, and the GL-235 will automatically deter-mine if the water should be solar heated or cooled, thus maximizing the system capabilities.

Terminal Strip Connections For input power, and sensor inputs. Controls also have industry standard 3 pin connectors for both forward and reverse valve actuator operation and screw terminal connectors.

LED Iindicators Show the status of the system operation, Four highly visible LED's show 1) power to the control, 2) power output directing valves and/or pump to collect heat (heating), 3) power output directing valves and/or pump to dissipate heat (cooling), 4) sensor fault indicator shows sensor(s) not operating properly.

GL-235 valve ouput Rating is the industry standard 24 VAC. A jumper switches the output to 12VAC for compatibility with older valve actuators. Output is fuse protected.

Recirculation Freeze Protection (field selectable operation) turns the GL-235 output ON, directing warmer pool/spa water through the collectors when near freezing tempera-tures are reached at the collector sensor. The GL-235 will allow recirculation when the collector temperature rises to 42°F. Two 10K Ohm sensors are required for operation. One or more freeze snap switches are recommended if freeze recirculation protection is utilized. Important--see installation instructions before using Recirculation Freeze.

System Test Switch Allows the user to manually over-ride the automatic function of the GL-235 and verify operation. Dimensions:H 8" ½ x W 6" ½ x D 4" ½


Product Specifications

Solar Controller Only

?     Asked on 6/9/2017 by Barbara Fitchie

I just installed a new Pentaire pump for the solar system, and it still does not work, I have the Goldline GL235LV and someone replaced some parts on it and it still doesn't work...the bottom light on the box does not come on, and the 2nd light down manual, blinks for a minute and then goes off and nothing, any assistance would be helpful Thank You, Barbara Fitchie

A  Answered on 8/5/2017 by InyoPools Product Specialist Alex V.

Barbara, There can be a few different causes. You can view the trouble shooting section in the owner's manual and see if that helps. 

?     Asked on 7/4/2016 by

My system doesn't sop when the preset temperature is reached. What could be the problem?

A  Answered on 7/9/2016 by InyoPools Product Specialist Lennox H.

Hi, The temperature sensor could be bad. You can find troubleshooting steps on page 5 of the GL235 Install & Operations Manual.

?     Asked on 3/25/2015 by Richard

What is the maximum length of wire conductor allowed for a solar controller rdt thermister sensor to operate with a goldline GL235LV . I propose to use 12awg wire with a length of appox 100 feet Sincerely Richard

A  Answered on 3/25/2015 by InyoPools Product Specialist Wes B.

After reading the owners manual for the goldline GL235lv,The maximum length for the controller wire should be no more than 150 feet, 12 awg wire is the bare minimum do not go any smaller, WIth you planning on going 100ft with 12awg wire you should not have any issues.

?     Asked on 6/26/2012 by Guest

Can this run on 240 VAC?

A  Answered on 6/26/2012 by InyoPools Product Specialist Patrick P.

The input power can be either 115 or 240 VAC.


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