3S Intelligent Pump Controller
Empowering HVAC with Efficient, Smart, and Sustainable Operations

Challenges in HVAC system

3S Automatic HVAC Pump Starter Solutions

Long standby periods lead to rusting and pump failure

During spring and autumn, pumps remain idle for extended periods, resulting in shaft corrosion and bearing seizure.

Automatic low-frequency inspection & anti-rust mode:

The controller performs periodic low-frequency jog operations and sequential anti-rust activation on all pumps to ensure reliable startup.

No Pump Alternation During Operation:

Once the two pumps begin operation, they can only continue following the preset duty–standby assignment. This causes excessive wear on the duty pump, while the standby pump remains idle for too long and may rust or seize.

Dual-pump alternation and fault redundancy:

In normal operating mode, the controller allows the running duration of each pump to be preset. Pump A operates during the defined cycle while Pump B remains on standby; when the cycle ends, the system automatically switches to Pump B, and Pump A enters standby. This scheduled pump alternation balances the operating hours of both pumps, prevents excessive wear caused by continuous operation of a single pump, and significantly extends the overall service life of the system.

When the duty pump encounters a fault—such as failure to start or overload—the controller automatically switches to the standby pump within 1–2 seconds to ensure uninterrupted water supply. Once the faulty pump has been repaired, it is reintegrated into the alternation sequence, ensuring continuous and reliable system operation.

Environmental Damage to Electrical Components:

Prolonged exposure to condensation, water seepage, or high temperatures can easily cause moisture ingress into the controller, reduce insulation performance, and significantly increase the risk of short circuits.

IP55 sealed, moisture-proof enclosure design

The controller uses a stainless steel enclosure with an IP55-rated sealed and moisture-proof structure, effectively isolating water vapor and ensuring stable operation of internal electrical components, significantly enhancing system safety and reliability.

The PCB is treated with a conformal coating and nano-coating process, enabling the controller to operate reliably in environments with up to 95% relative humidity.

Difficult system maintenance and lack of remote monitoring:

Traditional HVAC water systems have limited capabilities for remote status viewing and intelligent alerts, making it difficult for operators to obtain real-time information on pump operation, electrical load, pressure fluctuations, and other key parameters. When abnormalities occur, on-site inspection is required, resulting in slow response, high maintenance costs, and challenges in performing trend analysis and energy-efficiency optimization.

Remote Monitoring and Intelligent Alarming

Supports RS485, Wi-Fi, and IoT communication, enabling deep integration with BMS/BA systems and building management control room monitoring platforms, achieving:

Real-time remote monitoring:

View key data such as pump operating status, pressure curves, current wave forms, water-level changes, and duty/standby rotation logs.

Intelligent alarm notifications:

Faults such as overload, dry-run, stall, abnormal pressure, and irregular pump start/stop events are reported in real time to the back end system or mobile App.

Remote maintenance and inspection:

Adjust parameters, perform inspections, and reset alarms without being on-site, greatly improving operational efficiency.

Data analysis and energy-efficiency optimization:

Supports trend and energy-consumption data logging, helping identify issues such as hydraulic imbalance or declining pump efficiency, providing decision-making insights for HVAC system energy optimization.