HAIYAN, China – Haiyan Kaichang Energy Saving Electronics Co., Ltd., a specialized manufacturer of solar thermal control systems, has obtained CE certification for its KC-50 solar water heater controller, confirming compliance with European safety and electromagnetic compatibility standards. The certificates were issued by ShenZhen LTS Testing Technology Services Co., Ltd., with test reports dated March 13 and March 14, 2023. The KC-50 controller meets the requirements of EN IEC 60335-2-102:2017/A1:2020 and EN 60335-1:2012/A11:2014 for household appliance safety, as well as EN IEC 62368-1:2020/A11:2020 for audio/video, information and communication technology equipment safety. The certification enables the company to supply the KC-50 to European Union markets, where compliance with these standards is mandatory for electrical products.
The KC-50 controller is engineered for residential solar water heating systems and is compatible with over 99% of non-pressurized solar water heaters. It delivers automatic water refilling, electric auxiliary heating, and pipe freeze protection, alongside a dual operating mode that allows users to choose between manual control and fully intelligent automation. The device features a high-definition LED digital display that provides real-time water level and temperature readings at a glance, with five water level segments at 20%, 50%, 80%, and 100%, plus a flashing 20% indicator for low-water conditions. Four integrated protection functions cover lightning strikes, dry-burning, electrical leakage, and overflow, addressing common safety concerns in domestic solar thermal installations.
A distinguishing feature of the KC-50 is its voltage compatibility. The controller is available with a US-standard 110V power plug or a European-standard 220V plug, allowing distributors and importers to supply a single product platform across multiple regions. The device operates at less than 5W of power consumption, measures 19cm × 13.5cm × 4cm, and works within a temperature measurement range of 0–99°C with ±2°C accuracy. It supports pumps, heat tape, and booster pumps up to 500W, along with a DC12V solenoid valve. Installation is simplified through a U-shaped groove wiring design, with clearly labeled terminals for electric heating, heat tape or pump connections, solenoid valve wiring, and the water level and temperature sensor cable. Each unit ships with a controller main unit, a water level and temperature sensor with cable, a water inlet solenoid valve, valve wiring, an expansion screw pack, and a user manual.
Kaichang's certification portfolio is supported by independent intellectual property. The company holds utility model patents for a whole-house customized domestic hot water system (Patent No. ZL 2021 2 0524272.7) and a solar and gas water heater automatic switching device (Patent No. ZL 2019 2 1784227.2). These patents reflect ongoing investment in product development, particularly in frost-protection and multi-source water heating control—areas the company has focused on since its formation. Kaichang was established in 2013 under the "Kaichang" brand, building on a foundation that traces back to 2005 when its predecessor began specializing in solar water heater accessories. In 2015, the company identified a market gap in pipe freezing during winter months and pivoted toward drain and frost-protection solutions, a strategy that accelerated its growth. By 2019, Kaichang had secured four patents, and the company's brand slogan, "Fear frozen pipes? Choose Kaichang!", encapsulates its positioning in the frost-protection segment.
The global solar water heater controller market continues to expand as households seek energy-efficient hot water solutions and governments promote renewable energy adoption. In Europe, stringent product safety regulations and rising energy costs are driving demand for solar thermal controllers with verified compliance documentation. CE certification has become a baseline requirement for market entry, and suppliers that hold valid certificates for both the low-voltage directive and electromagnetic compatibility requirements are better positioned to serve European importers, plumbing wholesalers, and solar thermal installers. The KC-50's dual voltage design further broadens its applicability, allowing the same control platform to serve markets in North America, Europe, and other regions where 110V or 220V supply is standard.
Haiyan Kaichang Energy Saving Electronics Co., Ltd. offers the KC-50 with a two-year warranty on the main controller unit and a one-year warranty on accessories. The company supports product customization, bulk shipment, OEM branding, and factory-direct supply, providing a comprehensive solar water heater controller solution for global households. For more information, visit www.kaichangsolar.com or contact the company directly.
www.kaichangsolar.com
Haiyan Kaichang Energy Saving Electronics Co., Ltd.
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