Sunday, September 13, 2026

The Latest Solar Hot Water Technology -- Better Than Ever, SolFlux (Replaces the STECA) System Controller

 Compared to the "Dumb Controllers" such as the Goldline and the DeltaT which only have non-informative lights, and no digital display.    The new SolFlux is worlds apart.

Even the super simple PV powered solar pump (with small PV panel at rooftop) can be improved by converting to the SolFlux.   You will get higher efficiency, and a special "Vacation Mode" that prevent panel overheating if you are gone for more than a few days. 

You get 3 temperature sensors, which tells you the tank temperature, the panel temperature, and temperature of the water going into your house.

Using these, our solar technicians can quickly diagnose any problem, even remotely, to keep you at top efficiency and money savings. 

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What the new SolFlux controller adds

The SunEarth SolFlux controller keeps the basic differential-temperature control but adds a much deeper level of system information and configuration.

Multiple programmable system types

  • Additional temperature, flow, and pressure inputs
  • More relay and pump-control options
  • Auxiliary-heating control
  • Wi-Fi connectivity
  • Remote monitoring through an app
  • Solar storage-tank status
  • Pump operating status
  • Energy-production information
  • Peak-power information
  • Historical operating data
  • Remote diagnostic information
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What we set up during a normal installation

Our primary goal is to make the solar hot water system operate correctly and safely.

That includes setting up and commissioning the controller for the equipment installed at the home. We verify the temperature sensors, confirm pump operation, check automatic mode, and establish the basic operating and safety settings appropriate for the system.

Once this work is complete, the system is ready to perform its normal solar hot water function.

The Wi-Fi features are an additional communications and monitoring layer. They can be useful, especially for technically inclined homeowners who enjoy seeing system data on a phone or computer, but they are not necessary for every homeowner.

Important support boundary for Wi-Fi functions

Some owners will love the extra features. They may enjoy connecting the controller to their home network, exploring the app, reviewing historical energy data, and adjusting advanced settings.

However, Pacific Energy’s standard installation does not include ongoing support for:

  • Home router configuration
  • Wi-Fi passwords and network changes
  • 2.4 GHz compatibility problems
  • App accounts and phone or tablet issues
  • Internet service or cloud connectivity
  • Firmware updates
  • Customer-created advanced settings
  • General home-network troubleshooting

Customers who want to use these functions should be prepared to configure and maintain them using the manufacturer’s instructions or with assistance from a qualified information-technology professional.

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