Laars Heating Systems R0061300 Limit Switch

The Laars Heating Systems R0061300 Limit Switch is a critical 140°F / 240°F temperature limit control engineered for precision monitoring in Laars Mini-Therm series boilers. This dual-function component acts as a vital high limit safety switch, designed to interrupt the burner circuit if water temperatures exceed safe operating thresholds. Specifically calibrated for JVS, JVT, and Mini Combo units, the R0061300 ensures system stability and prevents thermal stress on copper heat exchangers. As an authentic OEM Laars replacement part, it guarantees correct fitment and electrical compatibility with existing wiring harnesses, maintaining the factory-specified safety sequence of the appliance. For technicians servicing residential hydronic heating systems, this limit control provides the rapid response time necessary to protect internal components from localized boiling or dry-fire conditions. Utilizing high-grade materials for long-term thermal cycling, the R0061300 boiler limit switch is the industry standard for restoring safety protocols in Laars gas-fired boilers.

Key Benefits for Contractors

• Precise Safety Calibration: Fixed 140°F and 240°F settings provide reliable high-limit protection for Laars JVS and JVT models.
• OEM Compatibility: Direct replacement for Laars part number R0061300 ensures seamless integration with factory controls and sensors.
• System Protection: Effectively prevents overheating, safeguarding the heat exchanger and reducing the risk of emergency failures.
• Versatile Application: Engineered for use across multiple Mini-Therm Mini Combo units and low-pressure copper tube boilers.

Common Questions

Is the R0061300 an automatic or manual reset limit switch?
This specific Laars limit control is designed as an auto-reset switch, meaning it will restore the circuit once temperatures fall below the differential threshold, though persistent tripping indicates a system flow or pump issue.

What models are compatible with this limit switch?
The R0061300 is primarily used in Laars Mini-Therm models JVS and JVT (sizes 50-225) as well as Mini Combo hydronic boilers.

How do I know if my limit switch is failing?
If your boiler is short-cycling or hitting a safety lockout despite having proper water flow, the limit switch may have drifted from its calibrated setpoint and require replacement to ensure continued safe operation.

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.