Raypak 008081F Limit Switch

The Raypak 008081F is a critical manual reset limit switch designed for over-temperature protection in high-performance heating systems. Engineered as a safety device, this 100-200F high limit switch monitors internal water temperatures and interrupts the electrical circuit if the threshold exceeds 200°F. This specific HVAC replacement part is essential for preventing manifold damage or catastrophic system failure caused by stagnant water or malfunctioning bypass components. For technicians troubleshooting Raypak heater high limit fault codes, the 008081F provides a dedicated manual reset (M/R) mechanism, ensuring the system remains locked out until the underlying thermal issue is diagnosed and cleared by a professional. This limit switch kit is frequently utilized in Raypak commercial boilers and residential hydronic heaters requiring precise thermal safety controls.

• Ensures robust over-temperature protection by tripping the circuit at 200°F to safeguard the heat exchanger and manifold.
• Features a manual reset (M/R) function to prevent automatic cycling after a thermal event, facilitating safer troubleshooting.
• Supports a broad operating range of 100°F to 200°F, making it a versatile OEM replacement part for diverse boiler and heater models.
• Heavy-duty Raypak limit switch construction designed for reliable performance in high-heat environments.
• Critical for resolving "High Limit" fault errors on digital heater control boards.

• What causes the Raypak 008081F to trip? High limit switches often trip due to obstructed water flow, a faulty Unitherm Governor, or bypass assembly failure causing internal temperatures to surge beyond the 200°F limit.
• Can I bypass this switch for testing? Bypassing safety controls is never recommended. If the limit switch is open, technicians should verify water flow and actual temperature before assuming the switch is defective.
• Is thermal paste required for installation? For best thermal conductivity and response time, applying a thin layer of high-temperature thermal grease to the sensing surface is a standard professional practice.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.