Here’s a short and simple maintenance schedule for the Lennox 505,104M Touchscreen Thermostat:

### Monthly:
– **Check Settings**: Ensure the thermostat is set to the desired heating/cooling schedule.
– **Clean Screen**: Gently clean the touchscreen with a soft, dry cloth to ensure clear visibility.

### Seasonal (Every 3 months):
– **Replace Batteries**: If the thermostat uses batteries, replace them to prevent loss of settings.
– **Update Firmware**: Check for any firmware updates available for improved functionality.

### Annually:
– **Professional Inspection**: Schedule an HVAC professional to inspect the system’s performance and compatibility with the thermostat.
– **Check Wiring**: Inspect for any loose connections or signs of wear to ensure the thermostat is operating efficiently.

### Note:
– Always refer to the user manual for specific instructions and guidelines.

The Lennox 505,104M Touchscreen Thermostat is designed for both residential and commercial use, featuring advanced control options for HVAC systems. Here are some typical specifications you might find in a product spec sheet for this thermostat:

### Product Specifications

– **Model Number**: 505,104M
– **Type**: Touchscreen Thermostat
– **Compatibility**: Compatible with most heating and cooling systems, including gas, electric, and heat pumps.
– **Display**:
– 7-inch full-color touchscreen display
– Easy-to-read interface with customizable color options
– **Temperature Control**:
– Temperature range: 45°F to 90°F (7°C to 32°C)
– Precision temperature control within 1°F
– **User Interface**:
– Intuitive menu navigation
– Scheduled programming for weekdays and weekends
– **Connectivity**:
– Wi-Fi enabled for remote access via smartphone app
– Integration with smart home systems (e.g., Amazon Alexa, Google Assistant)
– **Features**:
– 7-day programming capability
– Energy-saving mode
– Humidity control (if applicable)
– Filter change reminders
– Adaptive recovery feature for optimal comfort
– **Power Supply**:
– Powered by 24V system
– Battery backup option (if applicable)
– **Dimensions**:
– Size: Approximately 5.5″ x 5.5″ x 1″ (check for exact measurements)
– **Weight**: Approximately 1 pound (check for exact weight)
– **Installation**:
– Wall-mounted
– Requires professional installation for optimal setup
– **Warranty**: Typically includes a limited warranty (check specific terms for details)

### Additional Information

– **User Manual**: Provides detailed instructions for installation, setup, and programming.
– **Support**: Access to customer service for assistance with troubleshooting and warranty claims.

For the most accurate and detailed specifications, it’s best to consult the manufacturer’s official documentation or website.

While I can’t provide specific part numbers for the Lennox 505,104M Touchscreen Thermostat, I can give you a general list of common parts that you might encounter or need when working with this model or similar Lennox thermostats. Here are some of the common parts:

1. **Thermostat Display Screen** – The touchscreen interface for user settings and programming.
2. **Internal Circuit Board** – The electronic board that manages all functions of the thermostat.
3. **Battery Holder/ Batteries** – If applicable, the compartment for backup batteries.
4. **Mounting Plate/Base** – The piece that attaches to the wall and holds the thermostat in place.
5. **Wiring Harness** – Connects the thermostat to the HVAC system.
6. **Temperature Sensors** – Sensors that detect the ambient temperature.
7. **User Manual** – Not a part per se, but essential for troubleshooting and installation.
8. **Cover** – The outer casing that protects the internal components.

For specific part numbers, it’s best to consult the Lennox parts catalog or a dealer that specializes in Lennox products. They can provide the most accurate information tailored to your needs. If you have any other specific questions about the thermostat, feel free to ask!

Troubleshooting your Lennox 505,104M Touchscreen Thermostat can help resolve common issues that may arise. Here’s a step-by-step guide to assist you:

### 1. **Check the Power Supply**
– Ensure the thermostat is receiving power. If the display is blank, check the circuit breaker to make sure it hasn’t tripped.
– If it’s powered by batteries, replace the batteries and ensure they are installed correctly.

### 2. **Inspect the Wiring**
– Turn off power to your HVAC system.
– Remove the thermostat from the wall and check the wiring connections. Ensure that all wires are securely connected and that there are no frayed or damaged wires.

### 3. **Reset the Thermostat**
– Sometimes a simple reset can solve issues. Look for a reset option in the settings menu or remove the thermostat from the wall and replace it after a few minutes.

### 4. **Calibrate the Thermostat**
– If the thermostat seems to be reading the temperature incorrectly, it may need calibration. Check the user manual for specific calibration instructions.

### 5. **Check System Settings**
– Ensure that the programming settings are correct for your heating and cooling needs. Verify that the thermostat is set to the appropriate mode (heat, cool, auto).

### 6. **Examine the HVAC System**
– Make sure that your heating or cooling system is functioning properly. Check for any issues such as clogged air filters, blocked vents, or a malfunctioning furnace or air conditioning unit.

### 7. **Review Error Codes**
– If the thermostat displays any error codes, refer to the user manual for explanations and recommended solutions for those specific codes.

### 8. **Update Software/Firmware**
– If applicable, check for any software updates for your thermostat that may resolve existing issues.

### 9. **Consult the Manual**
– Your user manual contains specific troubleshooting steps and guidance tailored to your thermostat model. Always refer to it for the most accurate information.

### 10. **Contact Professional Support**
– If you’ve tried all the above and the thermostat is still not functioning, consider contacting a professional HVAC technician who can diagnose and resolve complex issues.

By following these steps, you should be able to troubleshoot and resolve most common issues with your Lennox 505,104M Touchscreen Thermostat.
Troubleshooting Guide