Intermatic Light Timer: A Comprehensive Guide
Intermatic timers offer versatile control for lighting and devices; this guide details installation, programming, and troubleshooting for various models like TN800 and FM1D14․
Detailed instructions, including wiring diagrams and manual operation, ensure seamless integration into your home or business automation system․
Access comprehensive support and resources at www․intermatic․com for advanced features and warranty details, enhancing your control experience․
Understanding Intermatic Timers
Intermatic timers are designed to automate the control of lighting and other electrical devices, offering convenience, security, and energy savings․ These timers operate by switching a circuit on or off at pre-programmed times, eliminating the need for manual operation․ Understanding the core functionality is key to effective use․
Different models, like the TN800 and FM1D14 series, cater to varying needs, from simple on/off scheduling to more advanced features like randomization and daylight saving time adjustments․ The basic principle involves setting the current time and date, then defining specific ON and OFF schedules․ Many timers also include override (OVR) and manual (MAN) modes for temporary adjustments․
The “MAN” mode allows for standard switch operation, bypassing the programmed schedule․ Proper installation, following the included instructions, is crucial for safe and reliable performance․ Troubleshooting common issues, such as a timer showing “ON” but the light remaining off, often involves checking wiring connections or resetting the device to factory defaults․ Refer to the Intermatic website for detailed support․
Types of Intermatic Light Timers
Intermatic offers a diverse range of light timers, each suited for specific applications․ Digital timers, like the FM1D14 series, provide precise scheduling with features like multiple ON/OFF settings and randomized operation for enhanced security․ These often include LCD displays for easy programming and viewing of current settings․
Mechanical timers, such as the TN800, utilize a rotating dial with pins to define ON/OFF periods․ They are known for their simplicity and reliability, requiring no batteries․ Specialty timers include astronomical timers, which automatically adjust schedules based on sunrise and sunset times, and photocontrol timers, which respond to ambient light levels․
In-wall digital timers offer a streamlined appearance, integrating directly into existing electrical boxes․ Understanding the specific features of each type, as detailed in the product instructions, is vital for selecting the right timer for your needs․ Intermatic’s website provides detailed specifications and comparisons to aid in your decision․
TN800 Timer Overview
The Intermatic TN800 is a mechanical, seven-day timer renowned for its straightforward operation and durability․ It features a rotating dial with 24-hour segments, allowing users to define ON/OFF periods by positioning pins around the dial’s perimeter․ No batteries are required, as it’s powered directly by the line voltage․
The timer operates in MANual mode initially, allowing for immediate control of connected devices․ Switching to AUTO mode activates the programmed schedule․ A simple ON/OFF override function provides temporary control without altering the set schedule․ The TN800 is ideal for basic lighting control applications where precise timing isn’t critical․
Refer to the product instructions for detailed guidance on pin placement and mode selection․ Proper wiring is essential for safe and reliable operation․ The TN800’s robust design and ease of use make it a popular choice for various indoor and outdoor lighting needs․
FM1D14 Series Timer: Key Features
The Intermatic FM1D14 is a digital, seven-day timer offering enhanced programming capabilities compared to mechanical models․ It features a large LCD screen for easy time and schedule viewing․ Programming is achieved through intuitive buttons, allowing for multiple ON/OFF events daily․ The timer includes a built-in override (OVR) function for temporary schedule adjustments․
Key features include a reset function to restore factory defaults and a MANual mode for immediate control, bypassing the programmed schedule․ The FM1D14 supports daylight saving time adjustments, ensuring accurate timing year-round․ Its compact design facilitates easy installation within standard wallboxes․
Detailed instructions within the manual guide users through setting the current time, programming schedules, and utilizing advanced features․ Proper wiring, as depicted in the included diagrams, is crucial for safe operation․ This timer is ideal for complex lighting control scenarios․

Installation Instructions
Prioritize safety by disconnecting power before installation․ Follow the wiring diagram carefully, ensuring secure connections․ Mount the timer securely and connect the load appropriately․
Safety Precautions Before Installation
Before beginning any installation work with your Intermatic light timer, absolutely disconnect the power supply at the circuit breaker or fuse box․ This is the most crucial safety step to prevent electrical shock and potential damage to the timer or your electrical system․
Verify the power is off using a non-contact voltage tester․ Never assume the power is off simply by switching off a wall switch․ Ensure the area is dry and free from any flammable materials․
If you are unfamiliar with electrical wiring, consult a qualified electrician․ Incorrect wiring can create a fire hazard or damage the timer․ Always adhere to local electrical codes and regulations․ Double-check all connections before restoring power․ Read the complete installation manual thoroughly before starting․
Improper installation voids the warranty and can lead to dangerous situations․ Prioritize safety above all else during the installation process․
Wiring Diagram for Standard Installation
A standard Intermatic timer installation involves connecting the line (hot), neutral, and load wires․ First, connect the black (hot) wire from your power source to the “L” or “Line” terminal on the timer․ The white (neutral) wire connects directly to the neutral wire of your light fixture circuit – typically wire-nutted together, bypassing the timer․
The wire leading to your light fixture (the load) connects to the “T” or “Load” terminal on the timer․ Ensure all wire connections are secure using appropriate wire connectors․ Grounding is essential; connect the bare copper or green ground wire from your power source to the grounding screw on the timer housing․
Important: Always refer to the specific wiring diagram included with your timer model (TN800, FM1D14, etc․) as terminal markings can vary․ Incorrect wiring can damage the timer and create a safety hazard․ Double-check all connections before restoring power․
Mounting the Intermatic Timer
Before mounting, ensure the power to the circuit is completely OFF at the breaker box․ Select a suitable location for the timer – typically a standard electrical box․ The timer should be mounted securely to the electrical box using the provided screws․ Ensure the timer is flush with the wall surface for a neat appearance․
Most Intermatic timers are designed to fit standard wall boxes, but some models may require a larger box․ Carefully align the mounting holes on the timer with the holes in the electrical box․ Tighten the screws firmly, but avoid over-tightening, which could crack the timer housing․
After securing the timer, gently tuck the wires back into the electrical box, ensuring they are not pinched or strained․ Avoid forcing the wires, as this could damage the insulation․ A properly mounted timer will be stable and securely attached to the wall․
Connecting the Load (Light Fixture)
After wiring the power source to the timer, connect the load – typically a light fixture – to the designated terminals․ Identify the “Load” terminals on the timer; these are usually clearly marked․ Connect the hot (usually black) wire from the light fixture to the “Load” terminal․
The neutral (usually white) wire from the light fixture should be connected to the neutral wire from the power source within the electrical box, using a wire connector․ Ensure all wire connections are secure and that no bare wire is exposed․ Double-check that the wiring matches the diagram provided with your specific Intermatic timer model․
Finally, carefully tuck all wires back into the electrical box, ensuring they are not pinched or strained․ Secure the light fixture and restore power at the breaker to test the connection․ If the light doesn’t turn on, re-check all wiring connections․

Programming the Timer
To program your Intermatic timer, set the current time and date, then define ON/OFF schedules․ Utilize the OVR (override) and MAN (manual) functions for control․
Follow the instructions for your specific model to customize settings and automate your lighting needs effectively․
Setting the Current Time and Date
Accurate time and date settings are crucial for proper timer operation․ Begin by ensuring the timer is in the programming mode, typically accessed by pressing a ‘PROG’ or ‘SET’ button․ Use the ‘HOUR’ and ‘MINUTE’ buttons to adjust the current time․ Some models utilize a 24-hour clock format, while others employ AM/PM settings – consult your specific model’s instructions․

For date setting, navigate through the menu options using the same buttons․ Input the month, day, and year sequentially․ Confirm each entry by pressing the ‘SET’ or ‘ENTER’ button․ The timer display will usually confirm the successful setting․ Remember to verify the accuracy of the time and date after initial setup, especially after power outages or daylight saving time adjustments․
Refer to the FM1D14 series manual for visual guidance on button locations and menu navigation․ Incorrect time and date settings will lead to inaccurate scheduling, so double-check your entries before proceeding to program ON/OFF schedules․
Programming ON/OFF Schedules
To program schedules, first enter programming mode using the ‘PROG’ or ‘SET’ button․ Select the desired day(s) – options range from single days to weekdays, weekends, or all days․ Utilize the ‘HOUR’ and ‘MINUTE’ buttons to set the desired ON time․ Confirm this setting with ‘SET’ or ‘ENTER’․
Next, program the corresponding OFF time using the same process․ Repeat these steps for each desired ON/OFF cycle within the selected day(s)․ Many Intermatic timers allow multiple schedules per day․ The timer display will typically show the programmed schedule as a confirmation․
Review the FM1D14 manual for specific instructions on navigating the scheduling menu․ Remember that each time you push the ON/OFF button, the timer should click, indicating a schedule change․ Ensure schedules align with your desired lighting control needs for optimal functionality․
Using the Override Function (OVR)
The ‘OVR’ (Override) function on your Intermatic timer temporarily bypasses the programmed schedule, forcing the light or connected device to the ON position․ This is useful for immediate illumination needs without altering the established schedule․
To activate Override, simply press the ‘OVR’ button; The timer display will typically indicate ‘OVR’ is active․ The light will remain ON regardless of the programmed schedule until the Override function is manually cancelled․
Cancelling Override is usually achieved by pressing the ‘OVR’ button again․ The timer will then revert to its regularly programmed schedule․ Note that some models may automatically cancel Override after a set period․ Refer to your specific model’s manual for detailed instructions and timing information․ This feature provides convenient, temporary control without schedule disruption․
Manual Mode Operation (MAN)
Manual mode, indicated by ‘MAN’ on the timer display, allows direct control of the connected light or device, independent of the programmed schedule․ This mode is ideal for situations requiring continuous operation or when a temporary schedule change isn’t needed․
To enter Manual mode, typically you’ll press and hold the ‘ON/OFF’ button until ‘MAN’ appears on the display․ Once in Manual mode, each press of the ‘ON/OFF’ button will toggle the light ON or OFF, functioning like a standard switch․ The timer maintains your programmed settings while in this mode․
Exiting Manual mode usually involves pressing the ‘Reset’ button or a specific combination of buttons, returning the timer to its scheduled operation․ Always consult your specific model’s manual for precise instructions on entering and exiting Manual mode, ensuring proper functionality and schedule preservation․

Troubleshooting Common Issues
Common problems include the timer showing ‘ON’ with no light, unresponsive programming, or wiring faults․ Resetting to factory defaults can often resolve these issues․
Refer to the Intermatic troubleshooting guide for detailed solutions and ensure correct wiring for optimal performance․
Timer Shows ON But Light is OFF
If your Intermatic timer displays ‘ON’ but the connected light fixture or device remains off, several factors could be at play; First, verify the manual mode (MAN) isn’t active, as this bypasses programmed schedules․ Ensure the wiring connections are secure and correct, referencing the wiring diagram in the installation instructions․
A faulty light bulb is a simple possibility – test with a known working bulb․ Check the breaker or fuse supplying power to the circuit; a tripped breaker will prevent operation․ If the wiring appears correct and the bulb is good, the timer itself might be malfunctioning․
Consult the Intermatic website’s troubleshooting guide (www․intermatic․com) for more specific diagnostics․ Testing the timer’s functionality, as outlined in the manual, can help pinpoint the issue․ If problems persist, consider contacting Intermatic support for assistance․
Timer Not Responding to Programming
If your Intermatic timer isn’t accepting programming commands, begin by ensuring the timer isn’t locked or in manual override (OVR) mode․ Pressing the ‘Reset’ button can sometimes resolve temporary glitches, returning the timer to factory defaults (though you’ll need to reprogram)․ Double-check the power supply to the timer; inconsistent power can disrupt programming․
Refer to the instructions included with your specific model (TN800 or FM1D14) for the correct button sequence and timing for programming․ Some models require a specific order of operations․ A low battery (if applicable) can also cause issues․
Consult the Intermatic website (www․intermatic․com) for troubleshooting guides and FAQs․ If the problem persists, consider a factory reset as a last resort, remembering to carefully document your previous settings․ Contact Intermatic support if you continue to experience difficulties․
Resetting the Timer to Factory Defaults
Resetting your Intermatic timer to factory defaults clears all programmed schedules and settings, returning it to its original state․ This is useful for troubleshooting or when transferring the timer to a new location․ Locate the ‘Reset’ button on your specific model – its position varies (refer to your manual)․
Typically, pressing and holding the ‘Reset’ button for a specified duration (often several seconds) initiates the reset process․ The timer display should indicate the reset is in progress․ Be aware that this action erases all custom programming, requiring you to re-enter your desired schedules․
After the reset, the timer will likely revert to manual (MAN) mode․ Consult the Intermatic website (www․intermatic․com) or your model’s instructions for precise reset procedures․ Document your previous settings before resetting to simplify reprogramming․
Addressing Wiring Problems
Wiring issues are a common cause of Intermatic timer malfunctions․ Before troubleshooting, always disconnect power at the breaker box to ensure safety․ Verify all wire connections are secure and match the wiring diagram in your timer’s instructions․ Loose connections can prevent the light or device from operating․
Inspect wires for damage – frayed insulation or corrosion can cause shorts or interruptions․ If using wire connectors, ensure they are properly sized and tightened․ Double-check the load (light fixture) wiring for any existing problems independent of the timer․
If the timer shows ON but the light remains off, a wiring fault is likely․ Refer to the troubleshooting guide on www․intermatic․com for specific scenarios․ If you’re uncomfortable working with electrical wiring, consult a qualified electrician․

Advanced Features & Settings
Intermatic timers offer randomization for enhanced security and convenient Daylight Saving Time adjustments; Explore these settings via the manual and website resources․
Customize your lighting schedules for optimal control and energy savings, maximizing the timer’s capabilities․
Utilizing Randomization for Security
Intermatic timers offer a valuable security feature: randomization․ This function simulates occupancy by turning lights on and off at varying, unpredictable intervals, deterring potential intruders while you’re away․

To activate randomization, consult your specific timer model’s manual․ Typically, this involves accessing an advanced settings menu․ The timer will then deviate slightly from your programmed ON/OFF schedule, creating a more realistic lived-in appearance․

Randomization is particularly effective when combined with multiple timers controlling different lights throughout your home․ This creates a more convincing illusion of activity․ Remember to test the randomization feature to ensure it functions as expected and provides the desired level of security․
For detailed instructions tailored to your Intermatic timer, visit the official website at www․intermatic․com and download the appropriate manual․ This feature significantly enhances the security benefits of automated lighting control․
Understanding Daylight Saving Time Settings
Intermatic timers often include settings to automatically adjust for Daylight Saving Time (DST)․ Proper configuration ensures your programmed schedules remain accurate throughout the year, preventing lights from turning on or off at incorrect times․

Access the DST settings through your timer’s programming menu․ Options typically include “Auto,” which automatically handles the transition, or “Manual,” allowing you to adjust the time yourself․ If selecting “Auto,” verify the timer is set to the correct time zone for accurate DST calculations․
Incorrect DST settings can disrupt your lighting schedules and diminish the benefits of automation․ Refer to your timer’s manual for specific instructions on navigating the DST settings․

Visit www․intermatic․com for detailed guides and troubleshooting tips related to DST․ Ensuring your Intermatic timer correctly handles DST is crucial for maintaining reliable and convenient automated lighting control․
Warranty Information and Support
Intermatic stands behind its products with a comprehensive warranty, protecting against defects in materials and workmanship․ The specific warranty period varies by product model; consult your timer’s documentation or the Intermatic website for details․
To initiate a warranty claim, retain your proof of purchase and contact Intermatic customer support․ They will guide you through the process and provide instructions for returning the defective unit․
Beyond warranty coverage, Intermatic offers extensive support resources․ Their website, www․intermatic․com, features a detailed FAQ section, downloadable manuals, and troubleshooting guides․
For personalized assistance, you can reach Intermatic’s customer service team via phone or email․ They are equipped to answer questions about installation, programming, and resolving common issues with your timer, ensuring a positive user experience․
Finding Additional Resources (Intermatic Website)
The Intermatic website, www․intermatic․com, serves as a central hub for all your timer-related needs․ You’ll find a dedicated support section with downloadable product manuals, including specific instructions for models like the TN800 and FM1D14 series․
Explore the extensive library of troubleshooting guides to quickly resolve common issues․ These guides offer step-by-step solutions for problems like timers not responding or lights failing to operate correctly․
Intermatic also provides detailed wiring diagrams and installation videos, simplifying the setup process․ Access the “Products” section to browse the complete range of timer controls and advanced lighting systems․
Register your product online to receive updates on new features, firmware upgrades, and exclusive offers․ The website’s search function allows you to quickly locate specific information, ensuring you have the resources you need․