The Vaillant 0020148036 is a genuine OEM high pressure switch designed to protect compatible Vaillant heat pumps and refrigeration-based systems from unsafe pressure levels. This safety-critical component continuously monitors the system’s refrigerant pressure and automatically stops operation if it rises above safe limits, preventing damage to compressors, pipework, and other key components.

A faulty high pressure switch can lead to nuisance lockouts, reduced performance, overheating, or failure to safeguard the system during overpressure events. Replacing it with this genuine Vaillant unit ensures accurate pressure monitoring and reliable safety performance.

Key Features:

• Genuine Vaillant high pressure safety switch

• Automatically interrupts operation during overpressure

• Protects compressors and refrigerant circuits

• Ensures safe, reliable performance of the system

• Manufactured to Vaillant’s strict OEM quality standards

• Helps resolve high-pressure faults, shutdowns & error codes

• Durable, long-life component

• Direct-fit replacement for professional installation

Compatibility

The Vaillant 0020148036 High Pressure Switch is compatible with:

• Selected Vaillant VWL air source heat pumps

• Other Vaillant refrigerant-based heating systems

• Any appliance listing 0020148036 in its official parts documentation

Engineers should always verify compatibility using the system’s service manual or parts list.