1. Introduction
This manual provides comprehensive instructions for the LOKLNEYK Tuya WIFI Heat Pump Controller PCB Board/PCBA, specifically designed for air source swimming pool water heaters operating at 380V. Please read this manual carefully before installation, operation, and maintenance to ensure safe and efficient use of the product. This controller offers advanced features for precise temperature management and system control.
2. Product Features
- Touch Key LCD Display: Features a user-friendly LCD display with touch keys for quick parameter setting and easy operation.
- Intelligent Defrost Control: Incorporates an intelligent defrost control mode for enhanced system stability and energy efficiency.
- Power-Off Memory Function: Retains settings even after power interruptions.
- 24-Hour Cycle Timing: Supports programmable ON/OFF functions for automated operation.
- Dual Compressor Control: Equipped with control for two compressors and two Electronic Expansion Valve (EEV) controllers.
- Application Versatility: Configurable for either swimming pool or hot water applications.
- Three-Phase Function: Includes three-phase functionality with compressor current detection.
- Source Compatibility: Adaptable for both air source and ground source heat pump systems.
- Extensive Control Outputs: Features eleven distinct control outputs for various components:
- Compressor 1
- Compressor 2
- Cycle water pump
- Fan motor
- Electrical heater
- 4-way-valve
- Solenoid valve A
- Crank heater
- Solenoid valve B
- Cold water replenishing valve
- Return water pump
- Comprehensive Sensor Inputs: Supports twelve sensor inputs for detailed monitoring:
- Water tank temperature sensor
- Evaporator temperature sensor 1
- Evaporator temperature sensor 2
- Climate temperature sensor
- Outlet water temperature sensor
- Exhaust temperature sensor 1
- Exhaust temperature sensor 2
- Suction temperature sensor 1
- Suction temperature sensor 2
- Return water temperature sensor
- Current sensor 1
- Current sensor 2
- Multiple Switch Inputs: Equipped with nine switch inputs for system safety and control:
- Compressor high pressure switch 1
- Compressor low pressure switch 1
- Water flow switch
- Compressor high pressure switch 2
- Compressor low pressure switch 2
- Water high level switch
- Water low level switch
- Water pressure switch
- Linkage switch
- Real-Time Energy Monitoring: Tracks gas and electricity consumption to assist in optimizing energy-saving strategies.
- Water Pressure Fluctuation Adaptation: Dual steady-flow valve and flow sensor prevent water temperature fluctuations caused by changes in water pressure.
- Multi-Scenario Scheduling: Supports heating schedules for different time periods, catering to varying peak water usage demands.
3. Technical Specifications
| Parameter | Specification |
| Measuring Range | -30°C to 99°C |
| Controlling Range | -30°C to 99°C |
| Accuracy | -30°C to 50°C: ±1°C±0.5dig; Others: ±2°C±0.5dig |
| Board Dimensions (L×W×H) | 198mm × 120mm × 35mm |
| Power Supply | 380V±10%(VAC), 50/60Hz |
| Power Consumption | <12W |
| Storage Temperature | -25°C to 50°C |
| Sensor Type | NTC (5K/25°C, B value 3470K; 50K/25°C, B value 3490K) |
| Relay Output Capacity (Compressor) | 20A/250VAC |
| Relay Output Capacity (Electrical Heater) | 20A/250VAC |
| Relay Output Capacity (Others) | 5A/250VAC |
| Item Weight | 1.76 ounces |
| Model Number | CCHW002 |
| Testing | AOI Test |
4. Package Contents
The following items are included in your product package:
- Main PCB Board (1 pc)
- LCD Display Unit (1 pc)
- Connecting Wire (1 pc)
- Transformer (1 pc)
- Temperature Sensors (12 pcs)
Figure 4.1: Included components of the LOKLNEYK Heat Pump Controller.
5. Installation and Wiring
Warning: Installation of this 380V electrical component should only be performed by a qualified electrician or technician to prevent electrical shock, injury, or damage to the equipment. Ensure all power is disconnected before beginning installation.
5.1. Overview of Connections
The controller board features various terminals for power, sensors, control outputs, and switch inputs. Refer to the detailed wiring diagram provided with your product for specific connection points. The following images illustrate the main board and its components.
Figure 5.1: Top view of the main PCB board.
Figure 5.2: Angled view of the main PCB board, showing relays and connectors.
5.2. Wiring Steps
- Power Supply: Connect the 380V AC power supply to the designated terminals on the main board. Ensure correct phase and neutral connections.
- Transformer: Connect the included transformer to the main board and its power input.
- LCD Display: Connect the LCD display unit to the main board using the provided connecting wire.
- Temperature Sensors: Connect all 12 temperature sensors to their respective input terminals on the main board. Ensure each sensor is placed in its correct monitoring location (e.g., water tank, evaporator, outlet water).
- Control Outputs: Wire the 11 control outputs (e.g., compressors, pumps, heaters, valves) to their corresponding devices. Verify that the relay capacities match the load requirements of each device.
- Switch Inputs: Connect the 9 switch inputs (e.g., pressure switches, flow switches, level switches) to the main board.
- Grounding: Ensure the entire system is properly grounded according to local electrical codes.
After all connections are made, double-check all wiring for security and correctness before applying power.
6. Operation
Once the controller is correctly installed and powered, you can begin operating your heat pump system.
Figure 6.1: LCD display and Tuya app interface for control.
6.1. Initial Power-On
- Apply power to the heat pump controller. The LCD display unit should illuminate.
- The controller will perform a self-check. Any initial errors will be displayed.
6.2. Basic Settings via LCD Display
Use the touch keys on the LCD display to navigate menus and adjust parameters:
- Temperature Setting: Set the desired water temperature for your swimming pool or hot water application.
- Mode Selection: Choose between swimming pool or hot water modes, and select air source or ground source operation if applicable.
- Timing Functions: Program the 24-hour cycle timing for automatic ON/OFF schedules to optimize energy use.
- Defrost Settings: The intelligent defrost control operates automatically, but parameters can be viewed or adjusted if necessary.
- System Status: Monitor real-time temperature readings from all connected sensors and the operational status of compressors, pumps, and heaters.
6.3. Tuya WIFI Connectivity
The controller supports Tuya WIFI for remote monitoring and control. Follow the instructions provided with the Tuya app to connect your controller to your home network. This allows you to:
- Remotely adjust settings.
- Monitor system performance and energy consumption.
- Receive alerts and notifications.
- Implement multi-scenario scheduling for varying demands.
7. Maintenance
Regular maintenance ensures the longevity and optimal performance of your heat pump controller.
- Visual Inspection: Periodically inspect the main board and all wiring connections for any signs of wear, corrosion, or loose terminals. Ensure all components are securely mounted.
- Cleaning: Keep the PCB and LCD display unit clean and free from dust, dirt, and moisture. Use a soft, dry cloth for cleaning. Do not use liquid cleaners directly on the electronic components.
- Ventilation: Ensure that the installation area provides adequate ventilation to prevent overheating of the controller.
- Sensor Check: Verify that all temperature sensors are correctly positioned and securely connected. Damaged or improperly placed sensors can lead to inaccurate readings and inefficient operation.
- Software Updates: If available through the Tuya app, regularly update the controller's firmware to benefit from new features and performance improvements.
8. Troubleshooting
This section provides solutions to common issues you might encounter. For problems not listed here or if issues persist, contact technical support.
| Problem | Possible Cause | Solution |
| Controller does not power on | No power supply; Loose wiring; Faulty transformer | Check 380V power input; Verify all power connections; Test transformer output. |
| Inaccurate temperature readings | Faulty sensor; Loose sensor connection; Incorrect sensor placement | Check sensor wiring; Ensure sensor is correctly installed in its designated location; Replace faulty sensor if necessary. |
| Heat pump not operating | Incorrect settings; Control output wiring issue; External device fault | Verify operating mode and temperature settings on LCD; Check wiring to compressor/pump; Inspect external heat pump unit. |
| WIFI connection issues | Incorrect network settings; Weak WIFI signal; Router issues | Ensure correct WIFI password and network selection in Tuya app; Move router closer or use a WIFI extender; Restart router. |
9. Support Information
For any questions, technical assistance, or support regarding your LOKLNEYK Tuya WIFI Heat Pump Controller, please contact your product supplier or refer to the specific warranty and support documentation provided at the time of purchase. Our team is committed to providing assistance and ensuring your satisfaction.