Ok..sorry for the resurect of old thread. I totally forgot I had posted this question and put off replacing the unit. I was trying to do a good xmas deed to get it fixed for the family, however i have some bad news.
It appears one of the coils is bad in the element.
There are two sets of wires from the element, a set of black and set of white as you said. Testing across the set of white (With the 6kw switch set to the on) I read 37ohms, so thats GOOD. Testing to ground reads 0. So I deduct the white element is GOOD.
Testing across the black set of leads, I read like 6MOhms. Testing to ground is like 1Mohms, so that seems BAD.
So since the shower is small the switch was originally in the 4.5kW mode. Looking at the rear of the switch, the switch is just a cut off for the white wires so it disables the white set of coils which is likely why that coil is not fried. The board is visibliy fried (Tracer is burnt off the board), so I know that needs replacement.
So my question is, can I spend the $250 for a new board and then flip flop the white and black coils so that black is on the 6kW (WHich is the switch that cuts them (Or just not hook the black up) then hook the white leads up to the new board where the black should go.
I know this is being cheap but money is tight and I don't want to have to replace the whole unit for $1100 and replumb the new unit in (SM-5) etc.. etc.. when I might be able to get it working for $250. Just wonder if anyone has ever tried this???
Also, we plan on selling the house within the next 2-3 yrs so if I can get a short term fix that would be ideal anyhow
Let me know what you think. I'm a EE so maybe my electric knowledge is getting in the way of me here