Przełącznik sieciowy Viessmann 7370464 ATM17-29

Mains switch (power switch) Viessmann 7370464 ATM17-29 — original switch for Viessmann wall-mounted gas boilers. This component is used for mechanical on/off switching of the boiler power supply and is an important element of the electrical control circuit. Technical specifications: Part numbers: 7370464, 956.559.004; Manufacturer: Viessmann (Germany); Model/Series: ATM17-29; Type: Mains switch (network switch); Dimensions (L x W x H): 53 x 35 x 31 mm; Compatibility (Key point!): This mains switch 7370464 is part of the Viessmann modular control system "ATM17-29". It is important to distinguish the components of this system by their part numbers, as each performs its own function: Part number 7370464 — Mains switch (Interrupteur réseau) — Mechanical on/off switching of boiler power supply; 7370463 — Flue gas thermostat — Control of exhaust gas temperature, emergency shutdown; 7370445 — Ignition burner (Zündbrenner) — Ignition unit. Switch 7370464 is compatible with Viessmann wall-mounted gas boilers of the Vitopend 100 series (models WH1B, WHKA, WH0A) and Vitodens 100-W. It is a standard component used in many modern Viessmann boilers. ⚙️ Signs of malfunction and when to replace: Replacement of the mains switch is required when the following faults are detected: Boiler does not start: When turning the switch knob to the "On" position, there is no reaction (display does not light up, pump and fan do not start). Boiler turns off due to vibration: Contacts inside the switch have loosened, and the boiler may turn off spontaneously even with slight impact. Visual damage: Cracked housing, burnt contacts or traces of melted plastic on the switch. Intermittent power loss: Boiler operates, but...