I've been fighting an overheating problem in my EKO 80 for about a month now. I've melted two controllers (at $200 a throw) now and three temperature probes. It happened again last night. I have the EKO run water through LogStor from a detached garage underground to my basement where it goes to a side are DHW and a heat exchanger in my FA furnace, then back to the boiler. As the water exits the boiler, it passes a temp/press gauge, through a Taco air separator, through a ball valve, through a Danfoss temperature valve and then through a Taco 10 pump that circulates water to my house and back. The return water comes back and goes through a Taco 10 on the backside of the boiler (2 total pumps in my system).
Last night it seems that the house was not receiving any hot water from the boiler as the FA fan was pushing cold air. When I went out to the boiler, it was overheated, blowing steam out the safety valve, the temp/press gauge showed about 250 F and the temperature probe on the controller was melted. The boiler was HOT.
The way I see it either my pumps aren't pumping or the Danfoss temperature valve is not allowing hot water out of the boiler loop and into the house. Could my Taco Air separator be the problem? How do I know if my pumps are actually pumping. They are definitely "on" as I can feel them running, but are they actually pumping water.
By the way, this has happened now about 3-4 times. I have put everything back together and the system runs just peachy for several days and then all of a sudden the overheat issue is back with a vengeance.
Any help would be greatly appreciated.
Bill the Dog
Last night it seems that the house was not receiving any hot water from the boiler as the FA fan was pushing cold air. When I went out to the boiler, it was overheated, blowing steam out the safety valve, the temp/press gauge showed about 250 F and the temperature probe on the controller was melted. The boiler was HOT.
The way I see it either my pumps aren't pumping or the Danfoss temperature valve is not allowing hot water out of the boiler loop and into the house. Could my Taco Air separator be the problem? How do I know if my pumps are actually pumping. They are definitely "on" as I can feel them running, but are they actually pumping water.
By the way, this has happened now about 3-4 times. I have put everything back together and the system runs just peachy for several days and then all of a sudden the overheat issue is back with a vengeance.
Any help would be greatly appreciated.
Bill the Dog