This Product Has Been Discontinued

The Controller to suit Hills Esteem HSC-01 is no longer being produced and is not available for purchase.

This page has been retained to help customers searching for this controller and to provide technical reference information.

Recommended Replacement

The Senztek SolaStat-Plus 1-2 Controller is the best replacement option. It has a digital display, which makes ongoing fault finding far easier.

The sensors must be changed when replacing this controller. The Senztek is supplied with both:

• 1 x 20m roof sensor
• 1 x 2.5m tank sensor
• Free thermal heat paste for roof sensor installation

Please contact our team before ordering so we can confirm the correct controller for your system. Email [email protected] with a photo of your existing controller.

Technical Reference Hills Esteem HSC-01

Fitted to Hills Esteem systems from approximately 2007 to 2010. Supplied as a controller only, with a standard flat pin female pump connector the lead may need changing and no auxiliary power outlet.

The Hills Esteem Solar Controller was Australian owned and made, and was also used in these brands of solar hot water system: Douglas Solar, Aquamax, Heavenly Solar, Endless Solar, Solar Power and Suntrap Solar.

How it worked

The controller heated the tank water to 75C and held it there, using sensors on both the solar panel and the tank. When the panel rose 9C above the tank water, the pump switched on to circulate water through the panel. If the tank reached 75C, or the panel fell to within 5C of the tank, the pump switched off. Built-in freeze protection switched the pump on if the panel dropped to 3C, and off again once it rose to 5C, to protect the panel and pipework.

Indicator lights showed Power ON, Pump ON, Tank Sensor Error and Collector Sensor Error.

Specifications

• Maximum tank temperature 75C
• Maximum collector temperature 250C
• Freeze protection: 3C to turn ON, 5C to turn OFF
• Tank / collector differential: 9C to turn ON, 5C to turn OFF
• Maximum load 240V AC 10 Amp