1. Introduction
The ZL-R200A is a universal controller designed for air-source heat pump water heaters. It offers a multi-functional design to efficiently manage your water heating system. Key features include auxiliary heating control, water flow monitoring, ventilation pump control, antifreeze protection, sensor failure action, automatic and timed defrosting, auto-restart, exhaust temperature protection, and compressor delay/pressure protections.
2. Package Contents
Please verify that all items are present and in good condition upon opening the package:
- 1 x Mainboard
- 1 x Display Panel
- 4 x Temperature Sensors
3. Specifications
| Feature | Specification |
|---|---|
| Setting Ranges | 10℃ to 70℃ |
| Display Ranges | -40℃ to 130℃ |
| Working Temperature | 0-50℃ |
| Storage Temperature | -10℃ to 60℃ |
| Ambient Humidity | 20-85%RH (without dew) |
| Power Supply | 220VAC ±10%, 50/60Hz |
| Outputs | Compressor 30A; Heaters 8A; Others 3A |
| Hysteresis | 2~10℃ |
| Water Sensors Calibration | -9.9~ 9.9℃ |
| Heater Energized From | -5~ 25℃ |
| Defrost Starting Time | 10-90 min |
| Defrost Starting Temperature | -9~0℃ |
| Defrost Stop Temperature | 2~30℃ |
| Maximum Defrost Time | 2-15 min |
| Exhaust Protections Temperature | 50 ~ 125℃ |
| Display Panel Dimensions | 86 x 86 mm (3.39 x 3.39 in) |
| Mainboard Dimensions | 105 x 90 x 35 mm (4.13 x 3.54 x 1.39 in) |
| Package Weight | 651g (1.44lb) |
4. Safety Information
- Ensure U34 is set correctly; incorrect settings may prevent the system from functioning.
- The internal real-time clock can maintain accuracy for up to 72 hours after a power loss.
- All sensors must be installed in their correct and designated positions.
- Never plug or unplug the panel bundle while power is supplied to the unit.
- The display panel should be installed indoors only, not outdoors.
5. Setup and Installation
Careful installation is crucial for the proper functioning of the ZL-R200A controller. Refer to the wiring diagram below for correct connections.
Installation Notes:
- Power Supply: Connect 220VAC(N) and 220VAC(L) to the designated terminals.
- Sensors: Connect the water, pipe, exhaust, and outdoor sensors to their respective inputs (T1, T2, T3, T4). Ensure correct polarity and secure connections.
- Outputs: Connect the compressor, heater, valve, fan, and pump to their corresponding output terminals (K1, K2, K3, K4, K5).
- Display: Connect the display panel to the mainboard using the provided cable. Remember, the panel must be installed indoors.
- Pressure/Flowing Switches: Connect pressure and flowing switches if applicable to the designated terminals (HP, SM).
6. Operating Instructions
The ZL-R200A controller features an intuitive interface for easy operation.
Key Operations:
- Set Water Temperature:
Press ▲ or ▼ to adjust the water temperature. Holding the button will change the value faster. The setting will be saved automatically after 5 seconds of inactivity. The factory default setting is 40°C. - Working Mode Selection:
The controller has two working modes: "AUTO" and "SAVE".- "AUTO" Mode: The system will maintain the set temperature by heating as needed.
- "SAVE" Mode: Heating will only occur within the three pre-set time periods. If the "Auto restart function" (U80) is disabled (set to 0), the controller will default to "AUTO" mode after a power supply interruption.
- Clock Setting:
- Press the M key. The hour digits will blink.
- Use ▲ or ▼ to set the hour.
- Press the M key again. The minute digits will blink.
- Use ▲ or ▼ to set the minute.
- Press the M key to exit the clock setting.
- Periods Setting for "SAVE" Mode:
- Press and hold the M key for 3 seconds to enter the period setting status.
- Use ▲ or ▼ to select the desired period and toggle its on/off status.
- Use ▲ or ▼ to set the time value for the selected period.
- Press and hold the M key for 3 seconds to save the settings and exit.
- Temperature Inquiry:
When not in system parameter setting status, press the S key to consecutively display the temperature readings from all connected sensors. The results will be shown for 3 seconds. - On/Off:
Press and hold the Ⓞ key for 3 seconds to switch the controller between online (operating) and offline (standby) modes.
7. System Parameters
System parameters allow for advanced configuration of the controller's behavior. Exercise caution when modifying these settings.
Accessing System Parameters:
- Press ▲ and ▼ keys simultaneously to enter the password input screen.
- Enter the password (default is "P00" if not changed) using ▲ and ▼.
- Press S to confirm. If the password is correct, you will enter the parameter set status. If incorrect, the system will exit.
Setting Parameters:
- Press ▲ or ▼ to select a parameter.
- Press S to display the current value of the selected parameter.
- Press ▲ or ▼ to adjust the parameter value.
- Press S to return to parameter selection.
- Press and hold S for 5 seconds to save the settings and exit. If no key operation occurs for 15 seconds, the system will exit without saving.
System Parameter Table:
| No. | Code | Setting Function | Range | Indication | Default |
|---|---|---|---|---|---|
| 1 | U01 | Hysteresis | 2~10℃ | 5 | |
| 2 | U02 | Water sensor calibration | -9.9~9.9℃ | 0.0 | |
| 3 | U03 | Heater energized from | -5~25℃ | The outdoor temperature | 12 |
| 4 | U30 | Defrost start time | 10~90 min | 45 | |
| 5 | U31 | Defrost start temperature | -9~0℃ | -5 | |
| 6 | U32 | Defrost stop temperature | 2~30℃ | 8 | |
| 7 | U33 | Maximum defrost time | 2~15 min | 8 | |
| 8 | U34 | Valve working mode | 0~1 | 0: Heat off, defrost on 1: Heat on, defrost off | 0 |
| 9 | U50 | Exhaustion protection mode | 0~2 | 0: Disable the protection 1: Protect, fan keeps 2: Protect, fan stops | 1 |
| 10 | U51 | Exhaustion protection temperature | 50~125℃ | 110 | |
| 11 | U60 | High/low pressure warning mode | 0~2 | 0: Disable 1: Warning when closed 2: Warning when Open | 0 |
| 12 | U61 | Water flowing switch mode | 0~2 | 0: Disable 1: Effective when closed 2: Effective when open | 0 |
| 13 | U65 | Buzzing alarming | 0~1 | 0: Disable; 1: Enable | 1 |
| 14 | U66 | Backlight brightness when no key operation | 0~1 | 0: Dim; 1: Bright | 0 |
| 15 | U80 | Auto restart function | 0~1 | 0: Disable; 1: Enable | 0 |
| 16 | U81 | Keypad lock | 0~1 | 0: Unlocked; 1: Locked | 0 |
| 17 | U90 | Passwords | 00~99 | 11 |
8. Maintenance
To ensure the longevity and optimal performance of your ZL-R200A controller, follow these maintenance guidelines:
- Cleaning: Gently wipe the display panel with a soft, dry cloth. Avoid using abrasive cleaners or solvents that could damage the screen or buttons.
- Connection Checks: Periodically inspect all wiring connections to the mainboard and sensors to ensure they remain secure and free from corrosion.
- Sensor Integrity: Verify that all temperature sensors are correctly positioned and undamaged. Damaged or improperly placed sensors can lead to inaccurate readings and inefficient operation.
- Environmental Conditions: Ensure the display panel remains installed indoors and is not exposed to extreme temperatures, direct sunlight, or excessive humidity, as specified in the safety information.
9. Troubleshooting
The ZL-R200A controller is designed to display error codes to help diagnose potential issues. Refer to the table below for common failure codes and their meanings.
Failure Code Table:
| No. | Code | Failure |
|---|---|---|
| 1 | E01 | Water container sensor failure |
| 2 | E02 | Pipe Coil sensor failure |
| 3 | E03 | Exhaustion sensor failure |
| 4 | E04 | Outdoor sensor failure |
| 5 | E05 | Water flow warning |
| 6 | E06 | High/low pressure input warning |
| 7 | E08 | Communication failure |
| 8 | AdF | Filling refrigerant |
| 9 | UnL | Restore password to "11" |
General Troubleshooting Steps:
- No Power: Check the power supply connection and ensure the circuit breaker is not tripped.
- Incorrect Temperature Readings: Verify that all sensors are correctly installed and securely connected. Check for any physical damage to the sensor wires.
- System Not Heating/Cooling: Ensure the working mode is set correctly ("AUTO" or "SAVE" with appropriate periods). Check for any active error codes.
- Display Issues: If the display is blank or erratic, ensure the panel cable is securely connected to the mainboard.
10. User Tips
- Optimize Energy Usage: Utilize the "SAVE" working mode and configure the time periods to match your hot water demand, reducing energy consumption during off-peak hours.
- Regular Monitoring: Periodically use the temperature inquiry function (S key) to check sensor readings and ensure consistent system performance.
- Familiarize with Error Codes: Understanding the failure codes will enable quicker diagnosis and resolution of any issues that may arise. Keep this manual handy for reference.
- Secure Connections: Ensure all wiring connections are tight and properly insulated to prevent electrical issues and ensure reliable operation.
11. Warranty and Support
This product comes with a 1-year guarantee from the date of purchase. If your purchase does not meet merchantable quality, is unfit for purpose, or does not match the description, please contact the seller for assistance.
Claiming Warranty:
- For wrongly-shipped items, please contact us within 48 hours of delivery. We will arrange to deliver the correct items or process a full refund.
- For defective or faulty products, please provide photos or videos of the issue. Upon confirmation, we will arrange for a reshipment or refund.
For any support inquiries, please refer to the contact information provided by your retailer or the official product page.
