Ao Smith 100187859 Blocked Outlet Switch

Product Description

The AO SMITH 100187859 is a blocked outlet switch designed for use in water heater systems. This safety component monitors the flue or exhaust outlet for blockage conditions and interrupts the heating circuit when an obstruction is detected, preventing unsafe operation. It is a direct OEM-style replacement part installed by licensed plumbers and HVAC technicians during routine service or safety-related repairs. The switch helps maintain safe venting operation and is a critical part of the appliance safety circuit.

This blocked outlet switch is typically found in residential gas water heater installations where proper venting is required for safe combustion and exhaust. It is used when the original switch has failed or triggered a fault condition that cannot be reset, indicating a venting issue or component failure that requires part replacement.

Key Features

• Monitors exhaust outlet for blockage to prevent unsafe heater operation
• Interrupts heating circuit upon detecting an obstructed flue condition
• OEM-style replacement designed for direct swap installation
• Supports safe venting compliance in residential gas water heater systems

Compatibility

Designed as an OEM-style replacement blocked outlet switch for residential gas water heater systems requiring flue exhaust safety monitoring.

Installation Notes

Installation should be performed by a licensed plumber or HVAC technician familiar with water heater venting systems. Always shut off the gas supply and disconnect power to the appliance before beginning any service work. Verify proper venting and clear any existing exhaust blockages before replacing the switch. Follow all applicable local codes and manufacturer guidelines during installation.

Technical Specifications

• Component Type: Blocked Outlet Switch

Standard Information

• Brand: AO SMITH
• Manufacturer Part Number: 100187859