Aaon ASM01890 Head Pressure Control Hvac Part

Product Description

The AAON ASM01890 is an OEM head pressure control designed for use in AAON HVAC equipment. Head pressure controls monitor and regulate refrigerant discharge pressure on the high side of a refrigeration circuit, protecting the compressor and system from damaging high-pressure conditions. This part is sourced directly from AAON as an original equipment component, ensuring it meets the same design and performance standards as the factory-installed unit. Licensed HVAC technicians handling refrigerant system service and diagnostics are the primary installers of this control.

The ASM01890 is intended for AAON commercial and light-commercial HVAC systems where head pressure management is required to maintain proper system operation. Head pressure controls are commonly found in rooftop units, air-cooled condensing systems, and packaged equipment operating in variable ambient conditions. This control helps the system maintain minimum condensing pressure during low-ambient operation, allowing reliable performance across a range of outdoor temperatures.

Key Features

• OEM AAON replacement part ensures factory-spec fit and function
• Designed for high-side refrigerant pressure regulation in AAON equipment
• Supports system protection by managing head pressure under variable ambient conditions
• Lightweight construction at 1 pound for straightforward handling during service

Compatibility

Designed as an OEM-style replacement head pressure control for AAON HVAC equipment. Consult AAON documentation or the equipment nameplate to confirm fitment for a specific unit model before installation.

Installation Notes

Installation should be performed by an EPA Section 608 certified HVAC technician. Before servicing any refrigerant-side component, recover refrigerant per applicable regulations and de-energize the unit at the disconnect. Follow the equipment manufacturer service documentation for pressure control wiring and mounting procedures. Do not restore power or refrigerant charge until all connections are verified secure.