1. Introduction
Thank you for choosing the COKYIS WiFi Thermostat K1MRH3A. This digital LCD wall-mounted thermostat is designed to control water and electric floor heating systems, providing precise temperature management and energy efficiency. It features WiFi connectivity for remote control and programming. Please read this manual thoroughly before installation and operation to ensure proper use and safety.
2. Safety Information
- Electrical Hazard: Installation must be performed by a qualified electrician. Disconnect power at the circuit breaker before installation or maintenance.
- Voltage Compatibility: Ensure the thermostat's voltage (AC 90V-240V) matches your electrical system.
- Proper Wiring: Follow all wiring diagrams and local electrical codes. Incorrect wiring can cause damage to the thermostat or heating system.
- Indoor Use Only: This thermostat is designed for indoor use in dry environments.
- Child Safety: Utilize the child lock function to prevent unintended adjustments.
3. Package Contents
Please check the package for the following items:
- COKYIS WiFi Thermostat K1MRH3A
- Mounting Screws
- User Manual (this document)
- External Floor Sensor (if applicable to your model)
4. Specifications
| Material | Anti-flammable PC |
| Voltage | AC 90V-240V, 50/60Hz |
| Max. Current Load | 3A (Water Heating) / 16A (Electric Floor Heating) |
| Temperature Accuracy | ±1°C |
| Temperature Setting Range | 0-80°C |
| Item Size | 86 x 86 mm (3.4 x 3.4 inches) |
| Power Consumption | <1W |
| Temperature Sensor | NTC |
| Connectivity | WiFi |
| Weight | 50 Grams (1.76 ounces) |
5. Installation and Wiring
Important: Disconnect power at the circuit breaker before beginning installation.
- Mounting: Install the thermostat in a standard wall box. Ensure it is away from direct sunlight, drafts, or heat sources that could affect temperature readings.
- Wiring: Refer to the wiring diagram below. Connect the power supply (L and N) and the heating load wires to the corresponding terminals. If using an external floor sensor, connect it to the NTC terminals.
- Secure: Mount the thermostat securely to the wall box using the provided screws.
- Power On: Restore power at the circuit breaker.
Image: Rear view of the COKYIS K1MH16A-wifi thermostat showing the wiring terminals. Terminals 1 and 2 are for the power supply (L and N), terminals 3 and 4 are for the heating load (N1 and L1), and terminals 6 and 7 are for the NTC temperature sensor. This diagram is crucial for correct electrical connection.
Image: Front view of the COKYIS WiFi Thermostat K1MRH3A. The LCD screen displays the current temperature (88.8°C), set temperature (88.8°C), day of the week (MON-SUN), time (88:88), and various status icons including WiFi signal, heating indicator, and auto mode. Below the screen are physical buttons for power, mode, clock, up, and down.
6. Operating Instructions
The thermostat features an intuitive interface for easy control.
- Power On/Off: Press the Power button (usually indicated by a circle with a vertical line) to turn the thermostat on or off.
- Mode Selection: Press the M button to switch between manual and automatic modes.
- Manual Mode: Allows direct setting of the desired temperature.
- Automatic Mode: Follows a pre-programmed schedule.
- Temporary Automatic Mode: In automatic mode, press the Up (▲) or Down (▼) button to temporarily override the schedule. This temporary setting will run for a few minutes before reverting to the schedule.
- Clock Setting: Press the Clock button (usually indicated by a clock icon) to enter the clock setting menu. Use the Up (▲) and Down (▼) buttons to adjust the time and other parameters.
- Note: WiFi models will automatically synchronize with internet time once connected to a network.
- Child Lock: The child lock function is typically off by default. To enable it, access the advanced options menu (refer to the full manual for specific steps). Once enabled, you can temporarily disable it by long-pressing the Power button for 5 seconds.
- WiFi Connectivity: Refer to the separate WiFi setup guide or the advanced settings section of the full manual for instructions on connecting your thermostat to your home WiFi network and using the mobile application.
7. Maintenance
- Cleaning: Wipe the thermostat's display and casing with a soft, dry cloth. Do not use abrasive cleaners, solvents, or spray directly onto the unit.
- Inspection: Periodically check the wiring connections to ensure they are secure.
- Software Updates: If available, check the manufacturer's website or mobile app for firmware updates to ensure optimal performance and new features.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Thermostat not powering on | No power supply; circuit breaker tripped; incorrect wiring. | Check circuit breaker; verify wiring connections; ensure power is supplied to the unit. |
| Heating system not responding | Incorrect mode; set temperature too low; wiring issue to heating system. | Ensure thermostat is in heating mode; increase set temperature; check heating system wiring. |
| Inaccurate temperature reading | Sensor obstructed or faulty; thermostat location. | Ensure sensor is clear; relocate thermostat away from drafts/heat sources; contact support if sensor is faulty. |
| WiFi connection issues | Incorrect WiFi password; router too far; network interference. | Verify WiFi password; move thermostat closer to router; check router settings. |
9. Warranty and Support
COKYIS products are designed for reliability and performance. For warranty information, technical support, or service inquiries, please refer to the warranty card included with your product or visit the official COKYIS website.
Manufacturer: COKYIS