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Troubleshooting problems can be difficult and frustrating. The LWCO is only reacting to the water level in the boiler and may be doing its job because some other system component may not be operating properly. Troubleshoot the whole system, not just the LWCO.

Is the pump sized properly and operating at full capacity?

The pump should be sized to pump at least 2 times the steaming capacity of the boiler.

Pump capacity is reduced if the pump impeller is worn or seals/packing leak.

Have the system dynamics changed from original installation?

The water level will drop faster if additional load has been added or if boiler is operating at or above its rated capacity.

The boiler water level will fluctuate widely if valves that slowly opened before have been replaced with quick opening valves.

Is system piping clean and in good condition?

Clogged strainers can reduce the flow of water into the boiler causing the boiler to turn off on low water.

Partially closed valves can reduce the flow of water into the boiler causing the boiler to turn off on low water.