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INTERLOCK SWITCH IHXILS1930 GLB Chemical Accessories FILTER LABEL PACK DEX2420LA6PAK FILTER LABEL PACK DEX2420LA6PAK protecting your heater’s electrical system from damage INTERLOCK SWITCH IHXILS1930 The Hayward Interlock Switch (IHXILS1930) is a safety mechanism in Hayward pool heaters that prevents unsafe operation by ensuring critical components are properly engaged before allowing ignition
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