{"product_id":"hayward-blower-vacuum-switch-universal-h-series-low-nox-pool-heater-fdxlbvs1930","title":"Hayward Blower Vacuum Switch for Universal H-Series Gas Heaters | FDXLBVS1930","description":"\u003cp\u003eThe Hayward Blower Vacuum Switch (FDXLBVS1930) is the OEM replacement blower vacuum switch for Hayward Universal H-Series gas heaters.\u003c\/p\u003e\n\n\u003cp style=\"background-color: #fff3cd; border: 2px solid #FFEAA7; padding: 15px; border-radius: 5px; margin: 15px 0; color: #856404;\"\u003e\u003cstrong\u003eIMPORTANT: PROFESSIONAL SERVICE REQUIRED\u003c\/strong\u003e\u003cbr\u003eGas and electrical heater components must be serviced by a licensed pool professional or qualified HVAC technician. Do not attempt to service gas or high-voltage components without proper certification.\u003c\/p\u003e\n\n\u003cp\u003eThe blower vacuum switch monitors the pressure differential created by the heater's blower motor to confirm adequate airflow before and during ignition. When the switch detects insufficient vacuum — indicating a blower failure or airflow obstruction — it interrupts the ignition sequence to prevent unsafe heater operation.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin: 20px 0; border: 1px solid #ccc;\"\u003e\n\u003ctr style=\"background-color: #f8f9fa;\"\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003eHayward Part Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003eFDXLBVS1930\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #ffffff;\"\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e\u003cstrong\u003eUPC\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ccc; padding: 10px;\"\u003e610377079907\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePoolaroo Pro Tip\u003c\/h3\u003e\n\u003cp\u003eA blower vacuum switch that trips repeatedly after replacement typically points to a restricted flue, a failing blower motor, or a blocked intake — not a defective switch. Have a licensed technician inspect the venting and blower assembly before condemning the new part. Always confirm heater power is fully disconnected before servicing any switch or control component.\u003c\/p\u003e\n\n\u003c!-- wft:processed:manual:2026-06-22 --\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":51774171611411,"sku":"FDXLBVS1930","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0920\/0687\/5411\/files\/hayward-blower-vacuum-switch-for-universal-h-series-gas-heaters-fdxlbvs1930-2.webp?v=1787557056","url":"https:\/\/poolaroo.com\/products\/hayward-blower-vacuum-switch-universal-h-series-low-nox-pool-heater-fdxlbvs1930","provider":"Poolaroo","version":"1.0","type":"link"}