Rcd hk06mb021 Pressure Switch Normally Open

Product Description

The RCD hk06mb021 is a normally open pressure switch designed for use in HVAC systems, specifically within gas furnace and air handler applications. Pressure switches are safety control devices that monitor draft pressure or inducer airflow and signal the control board to allow ignition only when safe operating conditions are confirmed. This switch replaces the OEM pressure switch in compatible Carrier HVAC equipment and is installed by licensed HVAC technicians during routine maintenance or fault diagnosis.

This pressure switch is suited for residential and light-commercial HVAC applications, particularly gas furnace systems where draft inducer operation must be verified before ignition is permitted. It is used in Carrier HVAC central air and furnace systems as a direct replacement part. Technicians typically encounter this component when diagnosing pressure switch fault codes or replacing switches that have failed open or stuck closed.

Key Features

• Normally open configuration — closes on detection of sufficient negative pressure to allow ignition sequence to proceed
• Direct OEM-style replacement for Carrier furnace and air handler applications
• Safety control function prevents ignition under unsafe draft or inducer conditions
• Compact design for installation in standard furnace pressure switch port locations

Compatibility

Designed as an OEM-style replacement pressure switch for Carrier HVAC gas furnace and air handler systems where the hk06mb021 is the specified part number.

Installation Notes

Pressure switches are installed by licensed HVAC technicians. Before servicing, shut down the furnace and disconnect electrical power at the disconnect switch or breaker. Verify the inducer motor and hose connections are in good condition before installing the new switch, as a cracked hose or restricted port can cause repeat failures. Work should comply with applicable local mechanical codes and manufacturer service documentation.

Technical Specifications

• Switch Type: Normally Open
• Application: HVAC Pressure Switch

Standard Information

• Brand: RCD
• Manufacturer Part Number: hk06mb021