{"product_id":"viessmann-7836489-ionization-electrode","title":"Viessmann 7836489 Ionization Electrode","description":"\u003cp\u003eAs a veteran technician, you know that a flickering flame signal is often the first sign of a service call. The \u003cstrong\u003eViessmann 7836489 Ionization Electrode\u003c\/strong\u003e is the critical \u003cstrong\u003eOEM flame sensor\u003c\/strong\u003e required for precise rectification in high-output \u003cstrong\u003eVitodens 200-W B2HA and B2HB series boilers\u003c\/strong\u003e. Designed specifically for the \u003cstrong\u003eB2Hx 160-352 model range\u003c\/strong\u003e, this electrode monitors the burner's flame via a microamp signal to the control board, ensuring the gas valve remains energized only when a safe combustion state is confirmed. A fouled or cracked ceramic insulator can lead to nuisance \"F4\" or \"EE\" fault codes; replacing the worn component with this genuine \u003cstrong\u003eViessmann boiler part\u003c\/strong\u003e restores factory-spec reliability and prevents unnecessary lockouts.\u003c\/p\u003e\n\n\u003cp\u003eThis kit includes the necessary \u003cstrong\u003ereplacement gasket\u003c\/strong\u003e to maintain a gas-tight seal at the burner door, which is vital for preventing the escape of flue gases and maintaining proper combustion chamber pressure. When performing annual maintenance, checking the \u003cstrong\u003eionization current\u003c\/strong\u003e (typically 160-170 VAC to ground) is standard practice; if the rod shows signs of significant pitting or the \u003cstrong\u003einsulation block\u003c\/strong\u003e is compromised, a direct swap with this exact-fit \u003cstrong\u003e7836489 electrode\u003c\/strong\u003e is the professional solution for long-term system stability.\u003c\/p\u003e\n\n\u003ch3\u003eKey Benefits for Contractors\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuine Viessmann OEM Quality:\u003c\/strong\u003e Eliminates the compatibility risks associated with aftermarket sensors, ensuring the control board receives precise \u003cstrong\u003eionization flame detection\u003c\/strong\u003e signals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Sealing:\u003c\/strong\u003e Comes \u003cstrong\u003ewith gasket\u003c\/strong\u003e to ensure a simplified and safe installation, maintaining the integrity of the \u003cstrong\u003eViessmann B2Hx series\u003c\/strong\u003e burner assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized Compatibility:\u003c\/strong\u003e Engineered for \u003cstrong\u003eVitodens WB2-HA\/HB\u003c\/strong\u003e models (45\/60\/80\/100 and 160–352 range), providing a perfect fit without field modifications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e High-temperature resistant rod material prevents premature oxidation and maintains superior conductivity throughout the heating season.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCommon Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat are the symptoms of a failing Viessmann 7836489 electrode?\u003c\/strong\u003e\u003cbr\u003e\nCommon indicators include the boiler short-cycling, ignition failure despite a visible flame, or specific fault codes such as F4. If cleaning the rod with a soft brush no longer restores a stable microamp signal, the electrode has likely reached its service limit.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs the gasket included in this part number?\u003c\/strong\u003e\u003cbr\u003e\nYes, this \u003cstrong\u003eViessmann 7836489\u003c\/strong\u003e package includes the factory-authorized gasket required to seal the electrode block against the burner door, preventing leaks and ensuring \u003cstrong\u003eoptimal combustion efficiency\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan this electrode be used in other Vitodens models?\u003c\/strong\u003e\u003cbr\u003e\nWhile Viessmann uses various \u003cstrong\u003eionization electrodes\u003c\/strong\u003e, the 7836489 is specifically calibrated for the larger \u003cstrong\u003eB2HA\/B2HB 160-352\u003c\/strong\u003e units. Always verify your specific boiler's serial number and technical data manual to ensure the correct sensor is deployed.\u003c\/p\u003e\n\n\u003cp\u003eDisclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.\u003c\/p\u003e","brand":"Viessmann","offers":[{"title":"Default Title","offer_id":42725062279346,"sku":"7836489","price":105.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1838\/2375\/products\/Pic_b1c0fe24-6d7f-4d3e-a050-d0f72e46401b.png?v=1752267124","url":"https:\/\/www.gsistore.com\/products\/viessmann-7836489-ionization-electrode","provider":"GSIstore","version":"1.0","type":"link"}