1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of the ZL-R200A Universal Air Source Heat Pump Water Heater Controller. This multi-function controller is designed to optimize the performance and efficiency of air-source heat pump water heaters, offering features such as auxiliary heating, waterflow auditing, ventilation pump control, and various protection mechanisms.
Please read this manual thoroughly before installation and operation to ensure safe and correct usage of the product.
2. Key Features
- Multifunction Design: Includes waterflow auditing, ventilation pump control, and sensor failure action functions.
- Temperature Inquiry: Allows checking temperatures from all sensors, with results displayed for 3 seconds.
- Water Temperature Setting: Adjustable temperature range from 10℃ to 70℃ (factory default 40℃).
- Two Working Modes: "AUTO" mode for continuous heating based on settings, and "SAVE" mode for heating only within three predefined time periods.
- Multiple Control Functions: Manages temperature, auxiliary electrical heaters, and water ventilation pump.
- Winter Antifreeze & Auto Defrost:
- Antifreeze pumping activates when outdoor temperature ≤ 2℃ (pump runs 3 minutes every 30 minutes), stopping when ≥ 3℃.
- Auto defrost starts at -9~0℃ and stops at 2-30℃.
- Multiple Protections & Warning: Features exhaust temperature protections, high/low pressure warnings, compressor delay protections, and water sensor failure warnings.
- Auto Restart & Restore: Automatically restarts after power loss, retains power failure memory, and supports recovery to factory settings.
3. Installation and Wiring
Proper installation and wiring are critical for the safe and correct operation of the ZL-R200A controller. It is recommended that installation be performed by a qualified technician.
3.1 General Precautions
- The panel should be installed indoors, not outdoors.
- Do not plug in/out panel bundle with power supplied.
- All sensors must be installed at correct positions.
- Ensure U34 is set correctly; otherwise, the system will not work.
3.2 Wiring Diagram
Refer to the diagram below for correct wiring connections. Ensure all connections are secure and follow local electrical codes.
4. Operation
The ZL-R200A controller features an intuitive display and buttons for easy operation.
4.1 Control Panel Overview
4.2 Setting Water Temperature
The water temperature can be set within a range of 10℃ to 70℃. The factory default setting is 40℃.
4.3 Working Modes
The controller offers two primary working modes:
- "AUTO" Mode: The system maintains heating according to the set temperature.
- "SAVE" Mode: Heating is restricted to three predefined time periods. This mode is designed for energy saving.
To switch between "AUTO" and "SAVE" modes, press the M key. When "Auto restart function" is disabled (U80 = 0), it will be "AUTO" mode after power supplied.
4.4 System Parameter Settings
To access and modify system parameters:
- Press SET key to set the temperature. Keeping pressed can fast set.
- Press SET key to set the clock. Keeping pressed can fast set. The setting will be saved 5 seconds later after set.
- To enter system parameter set: Press ▲ and ▼ keys simultaneously for 3 seconds. The big digits show "P00" for password edit.
- Press ▲ or ▼ key to set password, press SET to confirm.
- If the password is wrong, exit. Else enter parameter set status.
- Press ▲ or ▼ to select parameter. Press SET to show the value of the parameter.
- Press ▲ or ▼ to set the value. Press SET to return to parameter selection.
- Keep SET pressed for 5 seconds to save the setting, and exit.
The status will exit if there is no key operation for 15 seconds, and the settings will not be saved.
System Parameter Table:
Clock Setting
- Press SET key, the hour digits will blink, press ▲ or ▼ key to set hour.
- Press SET key again, minute digits will blink, press ▲ or ▼ key to set minute.
- Press SET key to exit.
Periods Setting for "SAVE" Mode
- Keep SET key depressed for 3 seconds to enter the period setting status.
- Press SET key to select the period and on/off. Press ▲ or ▼ to set the value of the time.
- Keep SET key depressed for 3 seconds to save the settings, and exit.
The status will exit if there is no key operation for 15 seconds, and the settings will not be saved.
5. Maintenance
To ensure the longevity and optimal performance of your ZL-R200A controller, follow these general maintenance guidelines:
- Keep the display panel clean and free from dust. Use a soft, dry cloth for cleaning.
- Ensure the controller is installed in a dry, indoor environment to prevent moisture damage.
- Regularly check all wiring connections for tightness and signs of wear or corrosion.
- Avoid exposing the unit to extreme temperatures or direct sunlight.
- If any sensors are damaged or malfunctioning, replace them promptly with compatible parts.
6. Troubleshooting
This section provides guidance on common issues you might encounter with your ZL-R200A controller.
6.1 Common Issues and Solutions
| Problem | Possible Cause | Solution |
|---|---|---|
| System does not work | Incorrect U34 setting. | Set U34 correctly as per the System Parameter Table. |
| Real clock loses time | Power loss for more than 72 hours. | Reset the clock. The real clock can only keep running correctly for 72 hours after power supply loses. |
| Sensor failure warning | Sensors not installed correctly or are faulty. | Ensure all sensors are installed at correct positions. Check sensor connections and replace faulty sensors if necessary. |
| Settings not saved | No key operation for 15 seconds during setting. | Ensure to press and hold the SET key for 5 seconds to save settings before the 15-second timeout. |
| High/Low pressure warning | System pressure issues. | Consult a qualified technician to diagnose and resolve pressure-related problems in the heat pump system. |
7. Specifications
| Parameter | Value |
|---|---|
| Name | Water Heating Controller |
| Material | Printed circuit board |
| 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 |
| Outputs (Heaters) | 8A |
| Outputs (Others) | 3A |
| Hysteresis | 2~10℃ |
| Water Sensors Calibration | -9.9~ 9.9℃ |
| Heater Energized From | -5~ 25℃ |
| Defrost Starting Time | 10- 90min |
| Defrost Starting Temperature | -9~0℃ |
| Defrost Stop Temperature | 2~30℃ |
| Maximum Defrost Time | 2-15min |
| Exhaust Protections Temperature | 50 ~ 125℃ |
| Display Panel Size | 86 * 86mm / 3.39 * 3.39in |
| Mainboard Size | 105 * 90 * 35mm / 4.13 * 3.54 * 1.39in |
| Package Weight | 725g / 1.60lb |
7.1 Package Contents
- 1 * Mainboard
- 1 * Display Panel
- 4 * Temperature Sensors
8. User Tips
- Version Check: If you are replacing an older controller, ensure you have the "New version" ZL-R200A for optimal compatibility and features.
- Power Loss: Be aware that the internal clock will only retain its setting for up to 72 hours after a power loss. For extended outages, you may need to reset the clock.
- Sensor Placement: Correct placement of all four temperature sensors is crucial for accurate readings and proper system operation.
9. Warranty and Support
For warranty information, technical support, or service inquiries, please contact your original seller or the product manufacturer. Keep your purchase receipt as proof of purchase.
