Model: 3431 | Part Number: 56304
This manual provides comprehensive instructions for the installation, operation, and maintenance of your FERMAX 3431 VEO Universal Intercom. Please read this manual carefully before installation and use to ensure proper function and safety. This intercom is designed for 4+N wiring systems, offering reliable audio communication and door release functionality.
Always observe the following safety precautions:
Verify that all items are present in the package:
The FERMAX 3431 VEO Universal Intercom is a compact and functional unit designed for clear communication within a building's intercom system.

Figure 1: Front view of the FERMAX 3431 VEO Universal Intercom. This image displays the sleek, neutral-colored design of the intercom unit, with the handset neatly placed on its base.

Figure 2: Angled view of the intercom, highlighting the handset and the base unit. The blue door release button is visible on the base, along with the hook switch.

Figure 3: Detailed view of the intercom's base, focusing on the blue door release button and the handset cradle. This shows the primary user interface for operation.
The FERMAX 3431 VEO Universal Intercom is designed for surface installation.

Figure 4: Back view of the intercom unit, illustrating the mounting points and the terminal block for electrical connections. This view is crucial for installation.
This intercom is compatible with 4+N wiring systems. Refer to the wiring diagram provided with your specific building's intercom system for exact connections. General connections typically include:
Ensure all connections are secure and correctly insulated. Incorrect wiring can damage the unit or the entire intercom system.
During an active conversation, or after receiving a call, you can open the door:
Place the handset back onto the base to end the conversation and hang up.
Regular maintenance ensures the longevity and optimal performance of your intercom.
If you experience issues with your intercom, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound from handset | Incorrect wiring; faulty handset; system issue. | Check wiring connections (especially audio lines). Test with another handset if available. Consult a professional if the issue persists. |
| Door release not working | Incorrect wiring; faulty button; electric lock issue. | Verify the door release wiring (N connection). Ensure the electric lock is functioning correctly. |
| Intercom not ringing | Call signal wiring issue; faulty ringer. | Check the call signal wiring (4 connection). Ensure the street panel call button is working. |
| Distorted audio | Loose connections; interference; faulty component. | Inspect all wiring for secure connections. Ensure proper grounding. |
If the problem cannot be resolved using these steps, please contact a qualified technician or FERMAX customer support.
| Feature | Detail |
|---|---|
| Manufacturer | FERMAX |
| Part Number | 3431 |
| Item Model Number | 3431 |
| Item Weight | 1.87 ounces |
| Product Dimensions | 1.69 x 3.23 x 8.43 inches |
| Color | Neutro (Neutral) |
| Material | ABS plastic |
| Power Source | AC |
| Voltage | 100V |
| Wattage | 100W |
| Installation Method | Surface Mount |
| Included Components | INTERFON 4+N VEO UNIVERSAL FERMAX |
| Usage | Entrance communication, Intercom systems, Visitor management |
FERMAX products are manufactured to high-quality standards. Specific warranty terms and conditions are typically provided with your purchase documentation. Please retain your proof of purchase for warranty claims. For detailed warranty information, refer to the documentation included in your product packaging or visit the official FERMAX website.
For technical assistance, spare parts, or further inquiries, please contact FERMAX customer support through their official website or the contact information provided with your product. When contacting support, please have your product model number (3431) and part number (56304) ready.
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