Westinghouse 1023983R Low Pressure Switch Heat Pump

Product Description

The WESTINGHOUSE 1023983R is a low pressure switch designed for use in residential split system heat pumps. This switch monitors refrigerant pressure on the low side of the refrigeration circuit and signals the system controls when pressure drops below a safe operating threshold. A loss of pressure can indicate a refrigerant leak, a blocked metering device, or an evaporator airflow restriction. When tripped, the switch protects the compressor from operating under low-charge or low-load conditions. Licensed HVAC technicians performing heat pump service or compressor replacement will encounter this switch as a standard protective component in the refrigerant circuit.

This low pressure switch is a direct-fit replacement for the WSH2BE4M1SP model family, covering units WSH2BE4M1SP18K, WSH2BE4M1SP24K, and WSH2BE4M1SP30K. These are residential split system heat pumps, making this switch appropriate for light-commercial and residential HVAC applications where that equipment is installed. Proper pressure switch function is critical to compressor longevity and overall system reliability across all capacity variants in this model line.

Key Features

• Monitors low-side refrigerant pressure to protect the compressor from low-charge operation
• Trips system controls when pressure falls below the safe operating threshold
• OEM replacement part for the WSH2BE4M1SP residential split system heat pump family
• Covers 18K, 24K, and 30K capacity variants in the WSH2BE4M1SP line
• Direct-fit installation reduces diagnostic and replacement time in the field

Compatibility

Designed as a direct OEM replacement for WESTINGHOUSE residential split system heat pumps WSH2BE4M1SP18K, WSH2BE4M1SP24K, and WSH2BE4M1SP30K (model family WSH2BE4M1SP).

Installation Notes

Installation should be performed by a licensed HVAC technician certified to handle refrigerants under EPA Section 608 regulations. Recover and isolate the refrigerant charge before removing the existing switch to prevent refrigerant release. Ensure system power is fully disconnected at the disconnect box before handling any electrical connections at the switch. After installation, leak-check all fittings and verify proper system pressures before returning the unit to service.

Technical Specifications

• Component Type: Low Pressure Switch
• Application: Residential Split System Heat Pump
• Compatible Model Family: WSH2BE4M1SP

Standard Information

• Brand: WESTINGHOUSE
• Manufacturer Part Number: 1023983R