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Duotone terrace — saffron brief on the left, garden-folded ledger on the right.
No continuity indicates the switch is stuck open and requires replacement
Key Benefits for Technicians: Direct OEM Replacement: Matches exact mounting footprints and terminal layouts for York S1-024-24103-000 specifications
consistent spark every time
Thermal Stability: Built to endure the high-temperature environments of industrial steam and hydronic heating systems
you should see 24V AC from the transformer when the thermostat calls for cooling
Carrier HH19ZA965 Limit Switch No continuity indicates the switchThe Carrier HH19ZA965 Limit Switch is a critical safety component designed for precise thermal monitoring in residential and commercial HVAC units. Operating with a temperature range of 115 165F, this auto reset limit switch serves as a reliable thermal cutout, interrupting the burner circuit if heat exchanger temperatures exceed safe operational parameters. As the official HH19ZA965A replacement, this updated version ensures direct compatibility and
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