If the timer behaves erratically or you want to clear all 70 programs:
If you prefer the official Legrand document:
Pro tip: In Italy and France, the manual is often printed with the code "LE05551AA" – searching that may yield the Italian version faster.
| Issue | Probable Cause | Solution | | :--- | :--- | :--- | | Display is blank | No power / Battery drained | Verify mains power. If power is on but display blank after a long power cut, leave unit powered for 30 mins to recharge internal battery. | | Timer ignores schedule | Unit is in Manual Mode | Press [MODE] until "AUTO" appears on screen. | | Timer switches at wrong time | DST (Daylight Savings) change | Manually reset the current time using the [CLOCK] button. | | Display shows "AM" but it is PM | 12h/24h format confusion | Cycle the hours past 12:00 to check format. Reset if necessary. | | Cannot program new time | Memory full | Delete unused programs (overwrite with "--:--" or use the Reset function). | Manuale Timer Legrand 03740
Legrand is a global specialist in electrical and digital building infrastructures. Among its vast product portfolio, the Legrand 03740 (often referred to as the Legrand 03740 or Legrand 03740 Timer) is one of the most popular modular timers used in residential and light commercial applications. Despite its simplicity, many users struggle to find a clear, comprehensive manual. This article serves as your complete "Manuale Timer Legrand 03740", covering everything from initial wiring to advanced programming and common error resolution.
Disclaimer: This guide is for informational purposes. Always disconnect power before handling electrical equipment. If unsure, consult a licensed electrician.
Nota: Questa sezione è a scopo informativo. L’installazione deve essere fatta da personale qualificato. If the timer behaves erratically or you want
I morsetti del 03740 sono standard:
Collegamento tipico per una luce:
The front panel has 4 or 5 buttons (varies slightly by manufacturing year, but functions are identical): If you prefer the official Legrand document:
According to the official Manuale Timer Legrand 03740, programming follows a logical sequence. Let’s break it down.
Ecco come impostare il timer. Segui questi passi in ordine.