Learn how to manually reset a commercial boiler low water cut-off (LWCO) sensor in 6 steps. Expert guide for 2026 safety standards and troubleshooting tips.
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Regular maintenance of your commercial boiler's Low Water Cut-Off (LWCO) sensor is paramount for ensuring the safety and longevity of your heating system. This critical safety device prevents the boiler from overheating by shutting it down if the water level drops too low, thereby averting potential damage and hazardous conditions.
Neglecting LWCO sensor maintenance can lead to premature boiler failure, costly emergency repairs, and significant disruptions to your business operations. Ensuring the sensor is clean, properly calibrated, and functioning correctly is a proactive step that guarantees optimal performance and peace of mind.
Signs Your LWCO Sensor Needs Attention
Several indicators can signal that your commercial boiler's LWCO sensor requires immediate attention or maintenance. These often include frequent boiler shutdowns, error codes related to water level, or a persistent "boiler lockout" status that doesn't resolve with simple resets.
Other signs might involve visible corrosion or sediment buildup around the sensor probe, or a noticeable decrease in heating efficiency. If you observe any of these symptoms, it's crucial to consult a qualified plumbing professional to diagnose and address the issue before it escalates.