Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your ELECTECK Non-Programmable Digital Thermostat. This thermostat is designed for single-stage heating and cooling systems, including electrical, gas, or oil systems. Its large, backlit LCD display ensures easy readability and straightforward climate control.
Image: Two ELECTECK Non-Programmable Digital Thermostats, highlighting the clear digital display and control buttons.
Package Contents
Verify that all items are present in your package:
- 2 x Digital Thermostat units
- 4 x Screws & Anchors for mounting
- 1 x Operation Manual (this document)
- 1 x Installation Manual
- 1 x Cable Label sheet
Key Features
- Non-Programmable: Simple, single-stage 1 heating/1 cooling operation.
- Compatibility: Works with single-stage heating, cooling, and heat pump (without aux) systems. Configurable for electric, gas, or oil systems.
- Large LCD Display: 4.5 sq. inch backlit screen with large characters for easy reading.
- User-Friendly: Big, separate buttons for straightforward setting and operation.
- Dual Power Options: Can be powered by 2 x AAA batteries (not included) or 24VAC power. C-wire is not required for battery operation.
- Precise Control: Temperature control with +/- 1 degree accuracy in Fahrenheit or Celsius.
- Fan Control: Fan switch with ON and AUTO functions.
- Compressor Protection: 5-minute compressor delay protection (selectable on or off).
- Low Battery Indication: Alerts when batteries need replacement.
Image: Visual representation of the thermostat's digital features and compatibility.
Specifications
| Attribute | Detail |
|---|---|
| Brand | ELECTECK |
| Model Number | KRT1H1C-2PK |
| Controller Type | Push Button |
| Color | White |
| Temperature Display Range | 41°F to 95°F |
| Temperature Control Range | 44°F to 90°F |
| Load Rating | 1 amp per terminal, 1.5 amp maximum all terminals combined |
| Power Source | 2 x AAA batteries or 24VAC |
| Voltage | 24 Volts |
| Material | Plastic |
| Display Type | LCD with Blue Backlight |
| Product Dimensions | 4.72 x 3.86 x 0.98 inches (11.99 x 9.8 x 2.49 cm) |
| Item Weight | 8.2 ounces (0.51 Pounds) |
| Mounting Type | Wall Mount |
| UPC | 767065008968 |
Image: Detailed dimensions of the thermostat unit, including the battery compartment.
Setup and Installation
Proper installation is crucial for the optimal performance of your thermostat. If you are unsure about any steps, consult a qualified HVAC technician.
Pre-Installation Checklist
- Power Off: Before beginning, turn off power to your heating and cooling system at the main fuse or circuit breaker panel.
- Identify Wires: Carefully label each wire connected to your old thermostat using the provided cable labels. Take a picture of the old thermostat's wiring for reference.
- Remove Old Thermostat: Detach the old thermostat from the wall.
- Mount New Base: Mount the new thermostat's universal sub-base to the wall or junction box using the provided screws and anchors.
Wiring Diagram and Terminal Designations
Connect the labeled wires to the corresponding terminals on the new thermostat's sub-base. Refer to the diagrams below for typical wiring configurations.
Image: Back view of the thermostat base showing terminal connections and jumper wire instructions.
Image: Comprehensive wiring diagrams for different HVAC system types.
Terminal Designations:
| Terminal | Description |
|---|---|
| RH | 24VAC (system power supply) - HEAT = RH to W |
| RC | COOL = RC to Y FAN = RC to G |
| G | FAN |
| Y | COOL |
| C | Common 24VAC (system power supply) |
| O | REV VALVE COOL (Reversing Valve for Cooling) |
| B | REV VALVE HEAT (Reversing Valve for Heating) |
| W | HEAT |
Gas or Electric System Setup
After wiring, configure the thermostat for your specific system type (Gas or Electric) using the switch on the back of the thermostat unit.
Image: Location and function of the Gas/Electric system selection switch.
- Gas System: For systems that control the fan during a call for heat, set the fan operation switch to the GAS position.
- Electric System: Set the thermostat operation switch to the ELEC position. This setting allows the thermostat to operate the fan when the G terminal is connected to the fan relay.
Operation
Your ELECTECK thermostat is designed for simple and intuitive operation.
Basic Controls
- Temperature Adjustment: Use the + (Up) and - (Down) buttons to set your desired temperature. The display will show both the current room temperature and the set temperature.
- System Switch: Slide the SYSTEM switch to select your desired mode: COOL, OFF, or HEAT.
- Fan Switch: Slide the FAN switch to select ON (fan runs continuously) or AUTO (fan runs only when heating or cooling is active).
- Backlight: The display backlight will illuminate when any button is pressed and will turn off automatically after approximately 10 seconds of inactivity.
Advanced Settings
- Temperature Display Options: You can switch between Fahrenheit (°F) and Celsius (°C) temperature display. Refer to the full installation manual for specific steps.
- Room Temperature Calibration: The thermostat allows for adjustment of the displayed room temperature to match an external reference thermometer, if needed. This can typically be adjusted by up to four degrees. Consult the installation manual for calibration procedures.
- Compressor Delay Protection: This feature protects your compressor from short cycling. It can be set to ON or OFF. When ON, the compressor will delay restarting for 5 minutes after it has turned off.
Maintenance
Battery Replacement
The thermostat can be powered by two AAA batteries. When the low battery indicator appears on the display, replace the batteries promptly to ensure continuous operation. The battery compartment is easily accessible on the front of the unit.
- Open the battery compartment door located at the bottom front of the thermostat.
- Remove the old AAA batteries.
- Insert two new AAA alkaline batteries, ensuring correct polarity (+/-).
- Close the battery compartment door.
Cleaning
To clean the thermostat, gently wipe the exterior with a soft, damp cloth. Do not use abrasive cleaners, solvents, or chemical sprays, as these can damage the unit.
Troubleshooting
If you encounter issues with your thermostat, refer to the common problems and solutions below:
| Problem | Possible Cause / Solution |
|---|---|
| Display is blank or dim | Low or dead batteries. Replace with fresh AAA batteries. Check 24VAC power supply if using wired power. |
| Thermostat not responding to temperature changes | Check system switch (HEAT/COOL/OFF) is in the correct position. Ensure set temperature is above/below current room temperature for heating/cooling. Verify wiring connections are secure. |
| Fan not operating | Check FAN switch is set to ON or AUTO. Ensure G wire is properly connected. Verify Gas/Electric system setting is correct. |
| System cycles too frequently (short cycling) | Compressor delay protection might be off. Enable the 5-minute compressor delay protection. |
| Inaccurate temperature reading | Thermostat location may be affected by drafts, direct sunlight, or heat sources. Use the room temperature calibration feature to adjust the display. |
| No heating or cooling | Check circuit breaker for HVAC system. Verify all wiring connections. Ensure system switch is in the correct mode (HEAT or COOL). |
Warranty Information
This ELECTECK Digital Thermostat is covered by the manufacturer's standard limited warranty. Please refer to the warranty card included in your product packaging or visit the official ELECTECK website for detailed warranty terms and conditions.
Customer Support
For further assistance, technical support, or to inquire about replacement parts, please contact ELECTECK customer service or visit the official ELECTECK store on Amazon:
