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Easy Installation: Located conveniently between the top and bottom cover
these units provide safe
MaxFlo VS models
maintaining the integrity of your pool automation system
seal replacements
Hayward FD Heater High Limit Kit | FDXLHLI1930 Pool Filter Parts Easy Installation: Located conveniently betweenHayward FDXLHLI1930 High Limit Switch Kit (135F) for Universal H Series Low NOx FD Heaters The Hayward FDXLHLI1930 is a genuine OEM high limit switch kit rated at 135F for Hayward Universal H Series Low NOx FD pool heaters. The high limit is a critical safety device that helps protect the heater by shutting it down if internal water temperature rises beyond a safe thresholdmost commonly caused by low water flow, restricted circulation, or scale
