Pressostato De Dietrich S101350

This is a De Dietrich pressure switch, identified by manufacturer code S101350 and catalogue article 336.661.001. Parts of this type belong to the pressure switch category. In a burner or boiler system, a pressure switch confirms that pressure or airflow is within the permitted band and gives the burner control permission to continue the ignition sequence. An air pressure switch proves that the fan is moving air; a gas pressure switch guards minimum and maximum gas pressure. Such switches are selected by the medium (air or gas), the switching range and differential, the type of connection (thread or hose spigot), the contact rating, and the applicable approval class. Typical failures for pressure switches include a torn diaphragm, a blocked impulse tube, or a drifted setpoint. Any of these faults will cause the burner to lock out, and the symptom often resembles an ignition problem rather than a pressure-sensing issue. When replacing a pressure switch, ensure that the new part matches the original switch in medium, setpoint range, differential, and connection type. The manufacturer code and catalogue number provide the reference for ordering the correct replacement. No further specific data for this article is available beyond its name and identifying codes.