1. Introduction
This manual provides essential information for the safe and efficient installation, operation, and maintenance of your CAREL Refrigerator Temperature Controller, models PYHI1Z056V and PZHIC00000K. Please read this manual thoroughly before using the device.
2. Product Overview
The CAREL temperature controller is designed for precise temperature management in refrigeration units. It features a digital display, programmable keys, and connections for NTC probes and serial communication.
Figure 2.1: Front view of the CAREL temperature controller, showing the digital display and control buttons.
Figure 2.2: Rear view of the controller, illustrating the terminal blocks for electrical connections.
Figure 2.3: The complete package including the controller, NTC probes, and mounting clips.
3. Specifications
| Feature | Detail |
|---|---|
| Model Numbers | PYHI1Z056V, PZHIC00000K |
| Temperature Range | -10 to 50°C (indicated as -10T50) |
| Current Rating | 8(4)A, 2FLA 12LRA |
| Voltage | 250 Vac, 230V~ |
| Material | Plastic |
| Type | Other (Temperature Controller) |
| Probes | NTC PROBES |
| Standards | EN60730-1, UL 873 |
| Origin | Mainland China |
4. Installation and Setup
Proper installation is crucial for the safe and correct operation of the controller. Ensure power is disconnected before beginning installation.
4.1 Mounting
The controller is designed for panel mounting. Use the provided clips to secure the unit into a suitable cutout in your control panel. Ensure adequate ventilation around the unit.
Figure 4.1: Controller shown with yellow mounting clips for panel installation.
4.2 Wiring Diagram
Refer to the detailed wiring diagram below for electrical connections. All wiring should be performed by a qualified technician in accordance with local electrical codes.
Figure 4.2: Wiring diagram and technical specifications label for the controller.
Wiring Terminal Descriptions:
- Terminals 1-3: Relay output 8(4)A, 2FLA 12LRA.
- Terminals 4-5: Power supply L and N (230V~).
- Terminals 6-7: NTC Probes connection.
- Terminals 8-9: Digital Input / NTC (DI/NTC).
- Terminals 10-11: Serial Communication (SERIAL CONV) / Programming Key (PROG KEY).
WARNING: Use copper conductors only. Refer to C314A055R1 for specific conductor requirements.
5. Operating Instructions
Once installed and powered, the controller will display the current temperature. Use the front panel buttons to adjust settings and monitor operation.
5.1 Basic Operation
- Power Button: Typically used to turn the unit ON/OFF or enter standby mode.
- SET Button: Used to access and modify setpoint temperatures and other parameters.
- Up/Down Arrows: Used to navigate menus and adjust values.
- Defrost Button (Snowflake icon): Initiates a manual defrost cycle if configured.
5.2 Setting the Temperature
- Press the SET button to enter the setpoint adjustment mode.
- Use the Up/Down arrow buttons to adjust the desired temperature.
- Press SET again to confirm the new setpoint and exit the adjustment mode.
5.3 Advanced Programming
For advanced settings and parameter configuration, a programming key (PROG KEY) can be connected to terminals 10-11. Refer to the specific programming manual for detailed instructions on parameter configuration.
6. Maintenance
Regular maintenance ensures optimal performance and longevity of your temperature controller.
- Cleaning: Clean the front panel with a soft, damp cloth. Do not use abrasive cleaners or solvents. Ensure no liquid enters the unit.
- Probe Inspection: Periodically check the NTC probes for damage or corrosion. Ensure they are securely connected and properly positioned for accurate temperature sensing.
- Ventilation: Ensure that the ventilation openings on the unit are not obstructed to prevent overheating.
WARNING: Disconnect power to the unit before performing any maintenance or cleaning.
7. Troubleshooting
This section provides solutions to common issues you might encounter.
| Problem | Possible Cause | Solution |
|---|---|---|
| Display is blank | No power, incorrect wiring, internal fault. | Check power supply (230V~). Verify wiring connections (Terminals 4-5). If problem persists, contact support. |
| Incorrect temperature reading | Faulty NTC probe, incorrect probe placement, wiring issue. | Inspect NTC probes for damage. Ensure probes are correctly connected to terminals 6-7. Verify probe placement in the refrigerated area. |
| Controller not responding to button presses | Unit locked, internal fault. | Check if the unit is in a locked mode (refer to programming manual). Power cycle the unit. If issue persists, contact support. |
8. User Tips
- Probe Placement: For accurate temperature control, ensure NTC probes are placed in a location that truly represents the temperature of the refrigerated space, away from direct airflow or heat sources.
- Regular Checks: Periodically verify the displayed temperature against an independent thermometer to ensure calibration accuracy.
9. Warranty and Support
This CAREL temperature controller is covered by the manufacturer's standard warranty against defects in materials and workmanship. For warranty claims or technical support, please contact your authorized CAREL distributor or the point of purchase. Keep your purchase receipt as proof of purchase.
For further technical documentation or specific programming guides, please visit the official CAREL website or consult your supplier.
