Hot water immersion through Eddi - longer immersion element not responding

manatoo

Hi

Tricky one to post this because it touches on electrics and plumbing but I think it's more suited here.

I have recently had solar installed with an Eddi diverter, a new 42inch stainless steel hot cylinder and a 36 inch double element immersion. The Eddi can accommodate two circuits, one for each of the elements in the immersion so sink/bath switchability. The electricians have wired each of the elements to each of the circuits but only the sink portion is heating. It doesn't matter what way I switch it on the Eddi using the device or the app, it just heats the upper portion of the tank. The electricians have tested both circuits of the immersion and say they are both working. The Eddie "sees" both circuits and I have it set so that when one heats to the max thermostat setting, the other should then heat to its setting but this switchover doesn't kick in and when I manually switch it to the second circuit it clicks off in a matter of seconds claiming the max temp is reached.

Does anyone have any ideas? I've had the electricians look at this multiple times and they are coming up with nothing despite speaking with Eddi staff and supposedly testing everything.

Thanks for any help/guidance/wisdom

John.G

Is this the set up you have, with one thermostat?.

pale rider

I have an iboost which does the same job, Also with two circuits, when installed it was set to heat bath, I had it changed to sink.

I don’t know how you have it wired directly to both unless it has a. Auto switch which the iboost does not, has the Eddi an auto switch

My sense is it is set up to sink only hence the trip when you change it.

monseiur

I would guess the issue is with the stat. Get your electrician to wire the bath element on it own (if that's possible) see if it works ok

50HX

Is it switching to tank 2 on the eddi when tank1 is heated?