
Tecumseh 84174-1 Pressure Control
The Tecumseh 84174-1 Pressure Control is a critical safety component designed for heavy-duty commercial refrigeration and HVAC applications. This dual pressure control SPST switch provides comprehensive system monitoring by managing both high-side and low-side pressures. As a direct OEM replacement for O12-4858-000 and part number 14955206, it ensures seamless integration during service calls without the need for extensive field modifications. The single pole single throw configuration is engineered for precise refrigeration pressure switch functionality, effectively protecting the compressor from extreme discharge pressures or loss of charge. This Tecumseh HVAC part is built for technicians who require accurate setpoints and differential management to maintain system integrity. Whether you are servicing a walk-in cooler or a light commercial rooftop unit, the 84174-1 delivers the reliability required to prevent catastrophic equipment failure caused by refrigerant line blockages or evaporator freeze-ups.
Key Benefits for Contractors
- Direct Compatibility: Engineered as the specific 84174-1 replacement for obsolete O12-4858-000 and 14955206 models, reducing diagnostic and installation time.
- Dual-Function Protection: Integrates both high-low pressure safety cut-outs into a single housing, streamlining terminal wiring and mounting.
- Industrial Build Quality: High-grade electrical contacts and bellows ensure consistent HVAC pressure control performance under high-cycle commercial conditions.
- Universal Commercial Utility: Designed for use across various refrigerants and equipment types, making it a versatile stock item for service vans.
Common Questions
Is the 84174-1 a suitable replacement for other dual pressure controls?
Yes, specifically it is the OEM replacement for part numbers O12-4858-000 and 14955206. Verification of current ratings and mounting footprints is recommended when replacing non-Tecumseh branded controls.
What is the primary function of the SPST switch in this unit?
The SPST (Single Pole Single Throw) configuration acts as a safety break in the control circuit, opening the contact to shut down the compressor when the system exceeds high-pressure limits or drops below low-pressure setpoints.
Does this control require manual or automatic reset?
This specific model is engineered for automatic reset on both sides, allowing the system to resume operation once pressures return to the safe differential range, which is critical for unattended refrigeration systems.
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.
Tecumseh 84174-1 Pressure Control
The Tecumseh 84174-1 Pressure Control is a critical safety component designed for heavy-duty commercial refrigeration and HVAC applications. This dual pressure control SPST switch provides comprehensive system monitoring by managing both high-side and low-side pressures. As a direct OEM replacement for O12-4858-000 and part number 14955206, it ensures seamless integration during service calls without the need for extensive field modifications. The single pole single throw configuration is engineered for precise refrigeration pressure switch functionality, effectively protecting the compressor from extreme discharge pressures or loss of charge. This Tecumseh HVAC part is built for technicians who require accurate setpoints and differential management to maintain system integrity. Whether you are servicing a walk-in cooler or a light commercial rooftop unit, the 84174-1 delivers the reliability required to prevent catastrophic equipment failure caused by refrigerant line blockages or evaporator freeze-ups.
Key Benefits for Contractors
- Direct Compatibility: Engineered as the specific 84174-1 replacement for obsolete O12-4858-000 and 14955206 models, reducing diagnostic and installation time.
- Dual-Function Protection: Integrates both high-low pressure safety cut-outs into a single housing, streamlining terminal wiring and mounting.
- Industrial Build Quality: High-grade electrical contacts and bellows ensure consistent HVAC pressure control performance under high-cycle commercial conditions.
- Universal Commercial Utility: Designed for use across various refrigerants and equipment types, making it a versatile stock item for service vans.
Common Questions
Is the 84174-1 a suitable replacement for other dual pressure controls?
Yes, specifically it is the OEM replacement for part numbers O12-4858-000 and 14955206. Verification of current ratings and mounting footprints is recommended when replacing non-Tecumseh branded controls.
What is the primary function of the SPST switch in this unit?
The SPST (Single Pole Single Throw) configuration acts as a safety break in the control circuit, opening the contact to shut down the compressor when the system exceeds high-pressure limits or drops below low-pressure setpoints.
Does this control require manual or automatic reset?
This specific model is engineered for automatic reset on both sides, allowing the system to resume operation once pressures return to the safe differential range, which is critical for unattended refrigeration systems.
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 Tecumseh 84174-1 Pressure Control is a critical safety component designed for heavy-duty commercial refrigeration and HVAC applications. This dual pressure control SPST switch provides comprehensive system monitoring by managing both high-side and low-side pressures. As a direct OEM replacement for O12-4858-000 and part number 14955206, it ensures seamless integration during service calls without the need for extensive field modifications. The single pole single throw configuration is engineered for precise refrigeration pressure switch functionality, effectively protecting the compressor from extreme discharge pressures or loss of charge. This Tecumseh HVAC part is built for technicians who require accurate setpoints and differential management to maintain system integrity. Whether you are servicing a walk-in cooler or a light commercial rooftop unit, the 84174-1 delivers the reliability required to prevent catastrophic equipment failure caused by refrigerant line blockages or evaporator freeze-ups.
Key Benefits for Contractors
- Direct Compatibility: Engineered as the specific 84174-1 replacement for obsolete O12-4858-000 and 14955206 models, reducing diagnostic and installation time.
- Dual-Function Protection: Integrates both high-low pressure safety cut-outs into a single housing, streamlining terminal wiring and mounting.
- Industrial Build Quality: High-grade electrical contacts and bellows ensure consistent HVAC pressure control performance under high-cycle commercial conditions.
- Universal Commercial Utility: Designed for use across various refrigerants and equipment types, making it a versatile stock item for service vans.
Common Questions
Is the 84174-1 a suitable replacement for other dual pressure controls?
Yes, specifically it is the OEM replacement for part numbers O12-4858-000 and 14955206. Verification of current ratings and mounting footprints is recommended when replacing non-Tecumseh branded controls.
What is the primary function of the SPST switch in this unit?
The SPST (Single Pole Single Throw) configuration acts as a safety break in the control circuit, opening the contact to shut down the compressor when the system exceeds high-pressure limits or drops below low-pressure setpoints.
Does this control require manual or automatic reset?
This specific model is engineered for automatic reset on both sides, allowing the system to resume operation once pressures return to the safe differential range, which is critical for unattended refrigeration systems.
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.












