Williams P323828 High Limit Switch OEM Replacement Part AC2030

The Williams P323828 High Limit Switch is a genuine OEM replacement safety component designed for Williams Comfort Products gas wall furnaces. This high limit switch monitors heat exchanger temperatures and interrupts furnace operation if unsafe overheating conditions are detected, protecting both the appliance and the surrounding structure from heat damage.

Key Features:

• Genuine OEM part — direct factory replacement ensuring proper fit, function, and safety performance
• High limit protection — automatically shuts down the burner when heat exchanger temperatures exceed safe operating thresholds
• Designed for Williams AC2030 series — listed as component #3 in the official AC2030TN and AC2030TP Top Vent Gas Wall Heater parts diagram
• Compatible with both natural gas and propane models — fits AC2030TN (natural gas) and AC2030TP (propane) configurations
• Critical safety component — works in conjunction with the Vent Limit Switch (P323834) and Vent Safety Switch (M117435) for full overheat protection

The Williams P323828 High Limit Switch is a key safety device in the AC2030 wall furnace system. Using genuine Williams Comfort Products replacement parts ensures your heating system continues to operate reliably, efficiently, and safely. Always follow manufacturer installation guidelines when replacing limit switches, and verify the part number matches your specific furnace model before installation.