If the blower on your Urbana fireplace runs but the heating element never energizes, or the unit intermittently cuts out, a failed sail switch is a likely cause. The Enviro Sail Switch Assembly (part 50-3898) replaces the worn airflow-sensing switch in Urbana 30, 50 and 70 gas fireplaces.

Purpose

The sail switch monitors blower airflow and prevents the heating element from energizing until adequate air movement is established, protecting the appliance from operating without proper airflow.

Key Benefits

• Direct-fit replacement for Urbana 30, 50 and 70 models — no modifications needed
• Genuine Enviro part, ships new in original factory packaging
• Restores proper blower-to-element safety interlock
• Matches original Enviro specifications for reliable switching

Other Notes

Confirm the blower assembly and wiring connections are functioning correctly before replacing the sail switch, since airflow problems elsewhere in the system can mimic a failed switch.

When replacing this part, it is worth inspecting related gas components such as the blower motor, limit switches, and wiring harness for wear.

Not sure it fits your unit? Contact us with your model number and we'll confirm before you order.