Carrier HH18HA598 Switch
The Carrier HH18HA598 temperature switch is a critical safety and operational component designed for high-limit or primary control in residential and commercial HVAC systems. Engineered as a normally closed (NC) disc thermostat, this manual reset switch monitors internal temperatures to prevent heat exchanger damage or system overheating. It features a precise opening temperature of 210°F and a 1/2-inch disc pattern, ensuring it integrates seamlessly into the burner assembly or heat exchanger housing of compatible gas-fired furnaces and air handlers. For technicians, this OEM Carrier replacement part ensures the exact electrical load ratings and thermal response curves required to maintain UL certification and factory performance standards.
Product Features and Benefits- Precise Thermal Calibration: Calibrated to open at 210°F, providing a reliable safety cutoff against thermal overstress.
- Manual Reset Mechanism: Requires a physical reset, forcing a system inspection to diagnose the root cause of the high-limit trip.
- Robust SPST Construction: Single-pole, single-throw design utilizes high-grade contact materials to resist pitting and electrical arcing.
- Direct OEM Compatibility: Engineered for specific Carrier, Bryant, and Payne furnace models, ensuring correct hole alignment and terminal orientation.
- Durable Ceramic Body: Designed to withstand high-ambient temperatures localized near the heat exchanger without degradation.
What causes a repeatable trip on this limit switch?
Repeated tripping usually indicates restricted airflow across the heat exchanger, likely due to a fouled evaporator coil, a high-static pleated filter, or an undersized duct system. High gas pressure or a failing blower motor can also contribute to excessive rise.
Can this switch be bypassed for testing?
While a technician may momentarily jump the circuit to confirm the switch has failed open, the system should never be left operational with a bypassed limit switch. This is a primary safety device intended to prevent fires and equipment failure.
Is this switch field-adjustable?
No, the Carrier HH18HA598 is a fixed-temperature control. If the trip point does not align with the system's plate specifications, the furnace is operating outside its designed parameters or the switch requires replacement.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Carrier HH18HA598 Switch
The Carrier HH18HA598 temperature switch is a critical safety and operational component designed for high-limit or primary control in residential and commercial HVAC systems. Engineered as a normally closed (NC) disc thermostat, this manual reset switch monitors internal temperatures to prevent heat exchanger damage or system overheating. It features a precise opening temperature of 210°F and a 1/2-inch disc pattern, ensuring it integrates seamlessly into the burner assembly or heat exchanger housing of compatible gas-fired furnaces and air handlers. For technicians, this OEM Carrier replacement part ensures the exact electrical load ratings and thermal response curves required to maintain UL certification and factory performance standards.
Product Features and Benefits- Precise Thermal Calibration: Calibrated to open at 210°F, providing a reliable safety cutoff against thermal overstress.
- Manual Reset Mechanism: Requires a physical reset, forcing a system inspection to diagnose the root cause of the high-limit trip.
- Robust SPST Construction: Single-pole, single-throw design utilizes high-grade contact materials to resist pitting and electrical arcing.
- Direct OEM Compatibility: Engineered for specific Carrier, Bryant, and Payne furnace models, ensuring correct hole alignment and terminal orientation.
- Durable Ceramic Body: Designed to withstand high-ambient temperatures localized near the heat exchanger without degradation.
What causes a repeatable trip on this limit switch?
Repeated tripping usually indicates restricted airflow across the heat exchanger, likely due to a fouled evaporator coil, a high-static pleated filter, or an undersized duct system. High gas pressure or a failing blower motor can also contribute to excessive rise.
Can this switch be bypassed for testing?
While a technician may momentarily jump the circuit to confirm the switch has failed open, the system should never be left operational with a bypassed limit switch. This is a primary safety device intended to prevent fires and equipment failure.
Is this switch field-adjustable?
No, the Carrier HH18HA598 is a fixed-temperature control. If the trip point does not align with the system's plate specifications, the furnace is operating outside its designed parameters or the switch requires replacement.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Carrier HH18HA598 temperature switch is a critical safety and operational component designed for high-limit or primary control in residential and commercial HVAC systems. Engineered as a normally closed (NC) disc thermostat, this manual reset switch monitors internal temperatures to prevent heat exchanger damage or system overheating. It features a precise opening temperature of 210°F and a 1/2-inch disc pattern, ensuring it integrates seamlessly into the burner assembly or heat exchanger housing of compatible gas-fired furnaces and air handlers. For technicians, this OEM Carrier replacement part ensures the exact electrical load ratings and thermal response curves required to maintain UL certification and factory performance standards.
Product Features and Benefits- Precise Thermal Calibration: Calibrated to open at 210°F, providing a reliable safety cutoff against thermal overstress.
- Manual Reset Mechanism: Requires a physical reset, forcing a system inspection to diagnose the root cause of the high-limit trip.
- Robust SPST Construction: Single-pole, single-throw design utilizes high-grade contact materials to resist pitting and electrical arcing.
- Direct OEM Compatibility: Engineered for specific Carrier, Bryant, and Payne furnace models, ensuring correct hole alignment and terminal orientation.
- Durable Ceramic Body: Designed to withstand high-ambient temperatures localized near the heat exchanger without degradation.
What causes a repeatable trip on this limit switch?
Repeated tripping usually indicates restricted airflow across the heat exchanger, likely due to a fouled evaporator coil, a high-static pleated filter, or an undersized duct system. High gas pressure or a failing blower motor can also contribute to excessive rise.
Can this switch be bypassed for testing?
While a technician may momentarily jump the circuit to confirm the switch has failed open, the system should never be left operational with a bypassed limit switch. This is a primary safety device intended to prevent fires and equipment failure.
Is this switch field-adjustable?
No, the Carrier HH18HA598 is a fixed-temperature control. If the trip point does not align with the system's plate specifications, the furnace is operating outside its designed parameters or the switch requires replacement.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
