Laars Heating Systems R2072400 Flow Switch 321894-708 preventing the common "communication error"

preventing the common "communication error" codes often seen with generic alternatives

consult the technical data sheet for specific elastomer compatibility

or has accumulated significant debris

verify your compressor model number against the Carrier parts manual to confirm fitment

Multi-Refrigerant Compatibility: Optimized for use with R404A

Laars Heating Systems R2072400 Flow Switch 321894-708 preventing the common "communication error"The Laars Heating Systems R2072400 Flow Switch Kit is a precision engineered SIKA flow sensor designed for critical monitoring in high efficiency hydronic heating systems. As a genuine Laars OEM replacement part, this flow switch serves as a primary safety interlock, ensuring the burner circuit only energizes when sufficient water velocity is detected. This prevents dry firing and heat exchanger overheating, which are common failure points in