HELP!! Smoked my second CCU control...

[Chadahar]

When i got my 380SE the CCU box was smoked in the bottom left of the circuit board. I have replaced the blower, the blower motor relay and the CCU relay. The original blower was dead, as in, direct power to it out of the car , it would not turn, commutator destroyed. Replaced with after market blower and it ran fine with the monovalve disconnected. I had my independent check and clean the mono valve and he reconnected it. Heat worked OK on the ride home but the controls were sporadic at best and I guess later that night, the CCU board burnt through a trace. No blower and only heat now if moving. (with the monovalve connected).
I took the CCU unit out this morning and I found this:


It is on the bottom left of the circuit board # 12(I mis marked as #10) trace (temp wheel side) burnt through (picture below). This trace is connected to the last relay behind the temp wheel.


Does anyone know if this is the trace that has anything to do with the Aux Water Pump? This is the same trace that burnt through on the original CCU circuit board. in exactly the same spot and the exact same damage. With this burnt through I have Zero, Zip, Nada controls for blower or anything, heat or A/C and NO heat all the time, with the monovalve connected. Just heat when traveling and only forced air from movement. This trace connects to the last relay behind the defrost button.

Indy did tell me that with the monovalve disconnected, that I would get heat all the time, blower or not(I did have heat all the time but blower would actuate with the different CCU controls and the fan buttons, with the monovalve disconnected). It was a little funky, but I attributed that to the CCU working as it should. (blower came on and off automatically).

I'm almost positive that the Aux water pump is to blame, but I am not sure. I have not checked my new blower for power to it yet as I took the CCU unit out first. I really hope that my new blower isn't fried.

Anyone got a schematic of the CCU?

I disconnected the monovalve again this morning. full heat thru the defrost vents and the dash vents, no blower. I will search for the Aux. Water Pump connection tomorrow afternoon. I looked tonight and could not find the connection.