LSW-HC4000

Description

LSW-HC4000 | Intelligent Solar Water Heating Controller
Maximize Efficiency, Reduce Costs, and Stay in Control—24/7

Product Overview

The LSW-HC4000 is a next-gen solar water heating controller designed to optimize solar thermal systems for homes, hotels, resorts, and commercial buildings. Combining AI-driven temperature regulation, multiple protection, and smart energy management, this compact device ensures consistent hot water while slashing reliance on fossil fuels. Ideal for both new installations and retrofitting traditional boilers.

Core Features and Benefits

🔥 Intelligent Thermal Management

Adaptive Enhanced Mode: Automatically triggers AC backup heating only when solar power cannot meet demand (e.g. cloudy days), with adjustable temperature set point (30-90°C).

Dual Sensor Accuracy: The controller monitors the radiator and water tank temperature simultaneously, and activates the controller only when heating is needed, saving energy and protecting the machine in the long run.

Forced AC Heating Mode: During the set AC heating time period, only AC can be heated, allowing water temperature to be flexibly controlled as needed.

🌡 Energy Savings and ROI

Up to 85% reduction in electricity bills: By giving priority to solar energy, boiler electricity bills are significantly reduced.

One-time solar system investment: One-time cost investment, cost recovery in 3 years. If there is a local subsidy, it is equivalent to free use.

📱 Remote Monitoring and Control

Bluetooth + Wi-Fi Enabled: Access real-time data (temperature, PV voltage, PV power, etc.) through the Smart Life app (iOS/Android).
Alarms and Faults: If the controller is abnormal, you will immediately receive machine fault or abnormal alarm information, no longer worrying about daily maintenance issues.

🛠 Rugged and easy to install

IP65 waterproof housing: withstands rain, dust and outdoor temperatures (-20°C to +60°C).

Plug and Play Wiring: Pre-marked terminals for solar water heater controller, water tank, solar panel and temperature sensor – no electrician required (DIY friendly).

Universal Compatibility: Suitable for most water tanks on the market (pressurized/non-pressurized).

🔒 Multi-layer protection

Over-temperature restart, overload restart and overload bypass to protect and extend system life.

LCD panel protection: prevent unauthorized adjustments in shared spaces (hotels, schools).

WiFi connection protection: prevent malicious connections in shared spaces (hotels, schools).

Rated power	4000W
Scope of application	The MPPT solar heating controller is only suitable for heating resistance loads through solar energy, and this controller can only be used for connecting resistance equipment or AC water heaters with a heating power of 420V/4000W.
Photovoltaic characteristics
Solar Max. input power	4000 W
Solar input current	≤ 20 A
Solar input voltage range	160 Vdc～420 Vdc
MPPT operating voltage range	120 Vdc～410 Vdc
MPPT efficiency	>99%
Solar heating output current range	≤ 20 A
AC characteristics
AC heating rated power(bypass)	4000 W
AC rated voltage	230 Vac
AC working voltage range	180 Vac～260 Vac
AC rated current	≤20 A
Load requirement
Load	The load should not be higher than 230V/4000W, and the resistance value isn’t less than 13 ohms
Machine characteristics
Machine dimensions	195183100 mm
Package dimensions	255250160 mm
Net weight	2.4 Kg
Gross weight	2.9 Kg
Ingress Protection	IP33

Why choose LSW-HC4000?
🏡 Suitable for any setting: single-family homes, apartments, B&Bs, and commercial complexes — available in 2KW, 4KW, and 6KW models.
❄️ Cold Climate Ready: IP65 waterproof rating, sealed enclosure, and can operate normally in cold and humid areas (tested in Scandinavia and Canada).
💡 MPPT Efficient Algorithm: As the sun changes, the power also changes, and the MPPT always tracks the maximum power point of the solar panel to achieve ultra-high output efficiency.
💰 Quick Payback: Through electricity savings, the cost can be recovered in 1-2 years, and a 2-year warranty is provided.
Package Includes:
1x LSW-HC4000 Controller
1x Temperature Sensor
1x WiFi antennas
User Manual (English)

Make hot water use smarter, greener, and more reliable.
Never compromise on comfort or sustainability again. The LSW-HC4000 delivers reliable hot water while making your system 50% more efficient than traditional controllers.

OEM/ODM options available: Custom branding, UI and functionality for volume orders.
Designed for clarity, technical rigor and market appeal — perfect for product pages, installers and sustainability campaigns.
Pro Tip: Pair with our PTC Heating Element for full solar integration!