1. Introduktion
This manual provides comprehensive instructions for the installation, setup, and operation of your GEWISS GWD6781 Digital Weekly Timer Switch. This device is designed for weekly programming of electrical circuits, ideal for applications such as ventilation, lighting, heating, and irrigation systems. Please read this manual carefully before use to ensure correct and safe operation.

Figure 1: GEWISS GWD6781 Digital Weekly Timer Switch. This image shows the front view of the timer switch, featuring its digital display, control buttons, and terminal connections.
2. Sikkerhedsoplysninger
ADVARSEL: Electrical installation and maintenance should only be performed by qualified personnel. Failure to follow these instructions can result in electric shock, fire, or serious injury.
- Afbryd altid strømmen til kredsløbet, før du installerer, servicerer eller fjerner enheden.
- Ensure the device is installed in a dry, protected environment, away from direct sunlight and extreme temperatures.
- Kontroller, at voltagEnhedens e- og strømstyrkeværdier matcher dine elektriske systemkrav.
- Do not attempt to open or repair the device yourself, except for battery replacement as instructed in this manual.
3. Produktet er slutview
The GEWISS GWD6781 is a compact digital timer switch designed for DIN rail mounting. It features a clear digital display and intuitive controls for setting weekly programs.
Nøglekomponenter:
- Digital skærm: Shows current time, day, and programming status (ON/OFF).
- PRG-knap: Used to enter and exit programming mode.
- Pil op/ned: Used to navigate menus and adjust values during setup and programming.
- Terminals (1, 2, 3, 4): Connections for power input and load output.
- DIN-skinneklemme: For secure mounting on a standard DIN rail.
The device includes a 4-year power reserve, ensuring that the internal clock and programmed settings are maintained during power outages.
4. Installation
4.1 Montering
- Ensure all power to the electrical panel is disconnected.
- Locate an available slot on a standard 35mm DIN rail. The GWD6781 occupies 1 module (18mm) width.
- Hook the top edge of the timer onto the DIN rail, then push the bottom edge firmly until it clicks into place.
4.2 Ledningsføring
The GWD6781 features a single normally open (NA) contact, rated for 16 A at 230 VAC.
- Terminal 1 og 2: Power supply input (230V AC, 50/60 Hz). Connect the Live and Neutral wires from your main power supply to these terminals.
- Terminal 3 og 4: Switched output (Normally Open contact). Connect the Live wire from your load (e.g., light, fan) to terminal 3, and the Live wire from your power supply to terminal 4. The Neutral wire for the load should be connected directly to the main Neutral.
Refer to the wiring diagram printed on the side of the device for precise connections. Ensure all connections are secure.
5. Opsætning
5.1 Indledende opstart
Once correctly wired and mounted, restore power to the circuit. The display should illuminate. If it's the first time powering up or after a prolonged power outage, the display might show a default time or require initial setup.
5.2 Indstilling af aktuel tid og dag
- Tryk og hold på PRG button until the time or day setting starts flashing.
- Brug Up og Ned arrow buttons to adjust the hour, then press PRG for at bekræfte og gå til minutter.
- Adjust minutes, then press PRG to confirm and move to day of the week.
- Adjust the day (e.g., 1 for Monday, 2 for Tuesday, etc.), then press PRG to save and exit the time/day setting mode.
The internal battery reserve ensures that the time and programmed settings are retained for up to 4 years even without external power.
6. Betjeningsvejledning
The GWD6781 allows for weekly programming using up to 48 "virtual trestles" or program segments. Each segment represents a 30-minute interval, allowing for precise control over your electrical devices.
6.1 Programmering af tænd/sluk-cyklusser
- Tryk på PRG button briefly to enter programming mode. The display will show a program number (e.g., P01) and a flashing ON/OFF indicator.
- Brug Up og Ned arrows to select the desired program number (P01 to P48).
- Trykke PRG to set the ON time for the selected program. Use the arrows to adjust the hour and minutes, then press PRG for at bekræfte.
- Next, set the OFF time for the same program using the arrows and PRG knap.
- After setting both ON and OFF times, you can select the days of the week for this program to be active. Use the arrows to cycle through day options (e.g., all days, weekdays, weekends, individual days). Press PRG for at bekræfte valget af dag.
- To add more programs, repeat steps 2-5. To exit programming mode, press and hold the PRG knap.
6.2 Manuel tilsidesættelse
The GWD6781 may feature a manual override function to temporarily switch the output ON or OFF, independent of the programmed schedule. Consult the device's display or a quick press of an arrow button (if applicable) to activate this feature. The display will typically indicate 'ON' or 'OFF' manually.
7. Vedligeholdelse
7.1 Udskiftning af batteri
The GWD6781 contains an internal battery for power reserve. If the display becomes dim or settings are lost frequently during power outages, the battery may need replacement.
- ADVARSEL: Disconnect power supply before removing the battery cover.
- Locate the battery cover on the device (typically on the side or bottom).
- Carefully remove the cover and replace the old battery with a new one of the same type (refer to the battery compartment for specifications).
- Replace the battery cover securely and restore power.
7.2 Rengøring
Rengør enhedens yderside med en blød, tør klud. Brug ikke slibende rengøringsmidler eller opløsningsmidler.
8. Fejlfinding
- Enheden tænder ikke: Check the main power supply and wiring connections to terminals 1 and 2. Ensure the circuit breaker is ON.
- Belastning skifter ikke: Verify that the load is correctly wired to terminals 3 and 4. Check your programmed ON/OFF times and ensure the current time and day are set correctly.
- Settings lost during power outage: The internal battery may be depleted. Refer to Section 7.1 for battery replacement.
- Forkert tidsvisning: Re-set the current time and day as per Section 5.2.
If problems persist, contact a qualified electrician or GEWISS customer support.
9. Specifikationer
| Mærke | Gewiss |
| Modelnummer | GWD6781 |
| Voltage | 230 Vca |
| Nuværende vurdering | 16 A |
| Kontakttype | 1 Normally Open (NA) |
| Montering | DIN Rail (1 module / 18 mm) |
| Programmeringsintervaller | 30 minutter minimum |
| Antal programmer | Up to 48 (virtual trestles) |
| Power Reserve | 4 år |
| Vægt | 53.3 g |
10. Garanti og support
GEWISS products are manufactured to high-quality standards. For specific warranty information, please refer to the warranty card included with your product or visit the official GEWISS website. For technical support or service, please contact your local GEWISS distributor or customer service center.
Du kan finde yderligere oplysninger og kontaktoplysninger på den officielle GEWISS webwebsted.





