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Posted by victor A Liṃn on June 15, 2009 at 21:44:23:
In Reply to: Re: Clayton Steam Generator Coil Meltdown posted by Mark on March 29, 2007 at 07:56:33:
: ::I assume that you have checked your flow switch and that the thermostat you are referring to is the coil overtemp switch? It melted due to lack of water flow and it never reached steam pressure or temp because there wasnt any water is what it sounds like.
I supose that you had have a incrustation tapping. apparently the thermostat indicates de right temperature but the small orifice due to the clugging suddenly rise without sense the lack of water in the rest of the coil. If you cut the coil upper levels or pancakes you can see severe incrustation on the middle levels, but on the upper are clean.
If the auxiliar thermostat was wrong ajusted, it can`t stop the burner fuction. Is more common see thsi problem with thermostat ring besides rtd sensor.