System 2000 Energy Manager

BenW

Hey Guys, thanks for your time.

My system just started doing this. No loose connection that I can see. Circulation pump for the hot water tank seams a little louder than usual but it doesnt stay on long enough to find out. Power cycling doesnt fix the issue. It flashes 140-150f back and forth. Any ideas? Any questions my way that might help. Really appreciate it. https://youtube.com/shorts/FC_foO7N2Oc?si=eK7FTmvaNjcj00WB

SuperTech

Usually the flashing 140 on the energy manager is an indication that the boiler is not heating properly. Typically this is due to a burner lockout. Has the boiler been serviced by someone who is trained on Energy Kinetics boilers? I would call your service provider and get them to check the boiler and oil burner for you.

szwedj

The flashing 140-150 light is a feature added to the last generation of our digital managers (the ones with the led temperature bars) vs the newer display managers (that use an lcd display instead). It indicates a circulation issue on the boiler. Assuming you have the most typical installation with a plate heat exchanger mounted in the boilers bypass circuit, the most common cause for the 140/150 error is that the boiler side of the plate het exchanger has become plugged up and needs to be removed and flushed or replaced.

The way it works is when the manager receives a call for heat or hot water, the boiler preheats to a certain temperature before it starts heating the calling zone. It also expects the water to heat up to a minimum temperature within a certain time. If it exceeds that minimum time, it will go into this 140/150 mode and it will cycle the heating zones to allow hot water to flow through the system in the event that the plate heat exchanger is restricted or plugged. If after cycling the zones it senses the water temperature has risen above that minimum, the system will stay in this mode and continue to operate providing heat and hot water.

Cycling the system power on the left side of the junction box should clear the error, but if the condition still exists, it will return.

BenW

Thanks guys.

So previously I had several recycled limit lockouts, for which i replaced the nozel, electrodes, and nylon coupler which was pretty stripped out. No further issues with the boiler that I know of. Ohms are around 1000-1200 so a little high, but within spec. I have a new cad cell ready if you think it needs it. The expansion tank i believe had a ruptured diaphragm, because it was full of water. Replaced that just now, charging it to spec (12psi).

The heat exchanger is placed in the bypass circuit, (still trying to wrap my head around the labyrinth of circuits). Is this something I can simply take off and inspect? It's bolted so it looks easy enough.

I posted a link to a YouTube video I posted (unlisted) with the energy manager screen, where the switches are turning off and on, jumping between hot water and different random zones. Were you able to see that?

Cheers, and thanks again.

szwedj

@BenW Watching your video, you definitely have something else going on there with the zone outputs. If you email me at jszwed@energykinetics.com we can go over a couple things to try and understand what is happening.