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Universal F61 Compatibility: Specifically designed to fit the full range of Johnson Controls Penn F61 series standard flow switches
Reduced Downtime: Simplifies troubleshooting and restores operation quickly after safety protocols are triggered
The Veris Industries H-721LC Transducer
this switch is "normally closed" and should show near-zero resistance
York S1-025-35397-000 Limit Control Universal F61 Compatibility: Specifically designedThe York S1 025 35397 000 is an essential manual reset limit control engineered for precision thermal monitoring within high efficiency furnace heat exchangers and air handling units. As a genuine OEM York replacement part, this HVAC safety switch is calibrated to provide high limit protection by breaking the electrical circuit to the gas valve or ignition control if internal temperatures exceed factory safety thresholds. Unlike automatic switches,
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