Technical specifications confirm this is the motor only

the part requires replacement

this assembly utilizes an equal percentage flow characteristic to maintain stable modulating control even under fluctuating system pressures

suitable for direct motor control or pilot duty applications up to 720VA

The manual reset thermal limit is a safety standard

Lochinvar & A.O. Smith 100289519 Label 320074-702 Technical specifications confirm this isWhen you are out in the field servicing high efficiency hydronic systems, having a legible and responsive interface is non negotiable for precise diagnostics. The Lochinvar & A. O. Smith 100289519 Label is the direct OEM replacement control overlay designed for the Smart System control interface found on Lochinvar Knight and A. O. Smith Vertex series boilers and water heaters. This Control Overlay Label features a professional grade adhesive backing