Low water cut off?

Aaron Hovel

I have attached a picture of part of my steam boiler furnace. Is the turquoise thing with the red light on top a probe-type low water cut off? Also, while the boiler is firing, the red light blinks. What does this mean?

Thanks,
Aaron

Mark Hunt

That is a probe style LWCO


The blinking tells me that your boiler is dirty.

The rust marks on the side tells me your boiler isn't firing/drafting correctly.

Added together, the sum tells me that boiler hasn't been properly serviced in years.

Notice I used the word "properly".

Call a pro soon.

Mark H

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Firedragon_4

To directly answer

your question, yes, it is a low-water cut-off, vintage 1970-80's Hydrolevel.

Go here for more info:
http://www.hydrolevel.com/

And please get that thing lloked at.