Replacing the SMPS often resolves these issues if the main power circuit is intact

Integrated safety lockout prevents the burner from recycling during flame failure or restricted air flow

Repeated tripping is usually symptomatic of restricted airflow

This is usually triggered by the 13B0015N05 switch due to restricted water flow

reducing resistance and heat buildup at the connection points

BROAN-NuTone S97018870 Grille Assy Refrigerant Replacing the SMPS often resolvesThe Broan NuTone S97018870 Grille Assy is a precision engineered OEM replacement component designed specifically for the Ultra Green and Ultra Silent series ventilation fans. As a technician, you know that a compromised ventilation faceplate disrupts static pressure and forces the blower assembly to work harder, reducing its service life. This genuine exhaust fan grille assembly features a low profile design that minimizes air turbulence, ensuring the