Carrier HH18HA199 Limit Switch
The Carrier HH18HA199 Limit Switch is a critical safety component designed for high-temperature monitoring in HVAC induction-combustion furnaces and residential heating systems. This genuine OEM replacement part is calibrated to trigger at a fixed 200-degree opening temperature, automatically interrupting the electrical circuit via its SPST (Single Pole Single Throw) configuration to prevent heat exchanger damage or hazardous rollout conditions. Engineered for precise thermal response, this manual reset limit switch requires technician intervention to restore operation, ensuring the underlying cause of overheating—such as airflow restriction, a failed blower motor, or a saturated filter—is addressed before system restart.
The HH18HA199 is cross-compatible and functionally identical to the HH18HA199B, providing a seamless fit for Carrier, Bryant, and Day & Night units, including the 50DJ-005-500 series. Its robust construction is designed to withstand the rapid thermal cycling common in industrial and light commercial environments. By maintaining an accurate trip point, this high limit safety switch prevents short-cycling and protects the integrity of the heat exchanger, making it a standard stock item for contractors troubleshooting Carrier furnace error codes related to limit circuit lockouts.
Key Benefits- Precise Safety Cut-off: Reliably opens at 200°F to provide advanced overheat protection for heat exchangers.
- Manual Reset Security: The manual reset functionality ensures the unit stays offline until a technician verifies the system's safety.
- Technician-Grade Compatibility: Drop-in replacement for HH18HA199B and compatible with widespread Carrier 50DJ models.
- Durable Thermostatic Control: Built to handle high-demand duty cycles without drifting from the calibrated setpoint.
- What does a 'Manual Reset' mean for this part? Unlike auto-reset switches, this limit control requires you to physically depress the reset button after it trips, ensuring you can diagnose the original cause of the high-limit condition.
- Is this switch compatible with my HH18HA199B part? Yes, the HH18HA199 is identical to HH18HA199B and serves as the current factory-authorized replacement.
- Where is this switch typically mounted? It is usually found near the burner box or heat exchanger to monitor for flame rollout or internal overheating effectively.
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.
Original: $82.71
-65%$82.71
$28.95Carrier HH18HA199 Limit Switch
The Carrier HH18HA199 Limit Switch is a critical safety component designed for high-temperature monitoring in HVAC induction-combustion furnaces and residential heating systems. This genuine OEM replacement part is calibrated to trigger at a fixed 200-degree opening temperature, automatically interrupting the electrical circuit via its SPST (Single Pole Single Throw) configuration to prevent heat exchanger damage or hazardous rollout conditions. Engineered for precise thermal response, this manual reset limit switch requires technician intervention to restore operation, ensuring the underlying cause of overheating—such as airflow restriction, a failed blower motor, or a saturated filter—is addressed before system restart.
The HH18HA199 is cross-compatible and functionally identical to the HH18HA199B, providing a seamless fit for Carrier, Bryant, and Day & Night units, including the 50DJ-005-500 series. Its robust construction is designed to withstand the rapid thermal cycling common in industrial and light commercial environments. By maintaining an accurate trip point, this high limit safety switch prevents short-cycling and protects the integrity of the heat exchanger, making it a standard stock item for contractors troubleshooting Carrier furnace error codes related to limit circuit lockouts.
Key Benefits- Precise Safety Cut-off: Reliably opens at 200°F to provide advanced overheat protection for heat exchangers.
- Manual Reset Security: The manual reset functionality ensures the unit stays offline until a technician verifies the system's safety.
- Technician-Grade Compatibility: Drop-in replacement for HH18HA199B and compatible with widespread Carrier 50DJ models.
- Durable Thermostatic Control: Built to handle high-demand duty cycles without drifting from the calibrated setpoint.
- What does a 'Manual Reset' mean for this part? Unlike auto-reset switches, this limit control requires you to physically depress the reset button after it trips, ensuring you can diagnose the original cause of the high-limit condition.
- Is this switch compatible with my HH18HA199B part? Yes, the HH18HA199 is identical to HH18HA199B and serves as the current factory-authorized replacement.
- Where is this switch typically mounted? It is usually found near the burner box or heat exchanger to monitor for flame rollout or internal overheating effectively.
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 HH18HA199 Limit Switch is a critical safety component designed for high-temperature monitoring in HVAC induction-combustion furnaces and residential heating systems. This genuine OEM replacement part is calibrated to trigger at a fixed 200-degree opening temperature, automatically interrupting the electrical circuit via its SPST (Single Pole Single Throw) configuration to prevent heat exchanger damage or hazardous rollout conditions. Engineered for precise thermal response, this manual reset limit switch requires technician intervention to restore operation, ensuring the underlying cause of overheating—such as airflow restriction, a failed blower motor, or a saturated filter—is addressed before system restart.
The HH18HA199 is cross-compatible and functionally identical to the HH18HA199B, providing a seamless fit for Carrier, Bryant, and Day & Night units, including the 50DJ-005-500 series. Its robust construction is designed to withstand the rapid thermal cycling common in industrial and light commercial environments. By maintaining an accurate trip point, this high limit safety switch prevents short-cycling and protects the integrity of the heat exchanger, making it a standard stock item for contractors troubleshooting Carrier furnace error codes related to limit circuit lockouts.
Key Benefits- Precise Safety Cut-off: Reliably opens at 200°F to provide advanced overheat protection for heat exchangers.
- Manual Reset Security: The manual reset functionality ensures the unit stays offline until a technician verifies the system's safety.
- Technician-Grade Compatibility: Drop-in replacement for HH18HA199B and compatible with widespread Carrier 50DJ models.
- Durable Thermostatic Control: Built to handle high-demand duty cycles without drifting from the calibrated setpoint.
- What does a 'Manual Reset' mean for this part? Unlike auto-reset switches, this limit control requires you to physically depress the reset button after it trips, ensuring you can diagnose the original cause of the high-limit condition.
- Is this switch compatible with my HH18HA199B part? Yes, the HH18HA199 is identical to HH18HA199B and serves as the current factory-authorized replacement.
- Where is this switch typically mounted? It is usually found near the burner box or heat exchanger to monitor for flame rollout or internal overheating effectively.
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.
