Posted by Harold Kestenholz - Hydronic Network on September 12, 2001 at 18:35:12:
In Reply to: stuck relay? posted by jtown on September 12, 2001 at 12:43:57:
Also, the burner may start without the circulator running with a tankless coil as a normal course of action to keep the coil hot for domestic water. Determine if heat is being sent up to the rooms, If so, the circulator relay may be stuck.