{"product_id":"blower-pressure-switch-407a","title":"Raypak Genuine OEM Blower Pressure Switch 407A","description":"\u003cp\u003eThe Raypak 010355F is the blower pressure switch for the model 407A Low NOx pool heater. It is the genuine Raypak OEM part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it is doing\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe switch is a safety interlock. It watches the pressure the combustion blower creates and closes only when air is genuinely moving. The control board waits for that signal before it lets the heater light, which is what prevents a burn without proper airflow.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow it fails\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe usual symptom is a heater that will not fire even though the blower is clearly running. The switch has stopped closing, so the board never sees its proof of airflow and holds the ignition sequence.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhile you are in there\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eLook at the sensing tube before you condemn the switch. A tube that is cracked, kinked, plugged with soot or holding condensate will keep the pressure signal from ever reaching a perfectly good switch, and it costs nothing to check.\u003c\/p\u003e","brand":"Raypak","offers":[{"title":"Default Title","offer_id":48634285916372,"sku":"RAY-151-1397","price":72.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_61e5e004-c139-41ab-98c9-b9466ac4bf61.gif?v=1788828179","url":"https:\/\/www.activepoolsupply.com\/products\/blower-pressure-switch-407a","provider":"Active Pool Supply","version":"1.0","type":"link"}