Heatcraft Refrigeration 28913201 Pressure Switch

The Heatcraft 28913201 High Pressure Switch is a critical safety component designed for heavy-duty commercial refrigeration and air conditioning systems. This high-pressure cutout is engineered to open at 400 PSI, providing immediate compressor protection by breaking the control circuit when head pressures exceed safe operating limits. Built to rigorous OEM refrigeration part standards, the 28913201 serves as a direct-fit replacement for Bohn, Larkin, Climate Control, and Chandler equipment, ensuring seamless integration into existing HVAC control components.

Typically utilized in systems involving R-22 or specific R-404A high-side applications, this 400# high-pressure switch features a compact design with wire leads for rapid field installation. Its primary function is to prevent catastrophic failure caused by dirty condenser coils, failed fan motors, or non-condensables in the system. By maintaining precise high-pressure cut-out control, technicians can reduce downtime and protect expensive compressor windings from thermal overload and excessive mechanical stress.

Key Benefits

• Precise 400 PSI Cutout: Provides a fast-acting safety response to prevent internal compressor damage and system rupture.
• Genuine Heatcraft OEM Quality: Ensures exact electrical specifications and mounting compatibility for Bohn and Larkin condenser units.
• Rugged Construction: Engineered to withstand the high-vibration environment of commercial condensing units and mechanical rooms.
• Compact Lead Design: Simplifies wiring into the safety string, reducing labor time for service contractors during emergency repairs.

Common Questions

What causes this switch to trip in a commercial system?
Trips are most commonly caused by restricted airflow over the condenser, such as a failed fan motor or clogged fins. It can also indicate an overcharged system or the presence of non-condensables within the refrigerant circuit.

Is the 28913201 a manual or automatic reset switch?
This specific model is typically designed as an automatic reset switch, though it is standard practice for technicians to identify the root cause of the overpressure event before allowing continued operation.

Can this switch be used with any refrigerant?
The 400 PSI set point is specifically calibrated for systems where 400 PSI represents the maximum safe operating threshold, commonly seen in R-22 and specific medium-temperature R-404A configurations.

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.