Solid As A Rock Thermal Disc Switch For Carrier HVAC Furnace Air Conditioning Manual Reset Temperature Limiter Heavy Duty Protection Kit Knockout Precision Rated Pro Series Component
UPC:
Premium Manual Reset Thermal Cutoff Switch Unit
✔️ HH19ZA950 Thermal Disc Switch Replaces Furnace Overheat Limiters
This manual reset thermal disc switch acts as a critical temperature limiter for residential furnaces and AC coils. Install this single component directly into your heat exchanger gas valve circuit to trip the main blower when overheating occurs during normal operation.
✅ OEM part number matches original factory specification
✅ Direct bolt on swap clears error codes on digital control boards
✅ Durable ceramic base resists corrosion in humid crawl space vents
💡 Why do modern gas furnaces require a manual reset thermal disk switch?
This safety component trips automatically when internal temperatures exceed safe operating limits.
- bimetal coil breaks electrical contact to shut down inducer motor during airflow blockage
- handy replacement eliminates tripped breaker confusion without calling emergency service staff
- direct swap fits Honeywell White Rodgers control boards in standard 2 stage heating setups