I didn't, boards got swapped out when the unit was rebuilt. I haven't cracked it open again. Not sure if I want to as I would disturb the warranty sticker from the re-builders.

ToreB has been amazing in all of this and I couldn't have gotten to this point without his help whether through emails and through his amazingly precise documentation. I love his products and the dude has been invaluable to me.

So close to the end of the tunnel, just have to press a couple of buttons and that hopefully will be that.

G

 

Tore and all,

Regarding the CCU and the motorized servo, what would happen if a damperwas stuck half closed, or was gummed up and barely moved, and the CCU was asking it to fully close? Would something in the CCU overheat and pop, or the traces/whiskers in the servo burn up? Could a stuck/difficult to move damper flap cause the burnt trace in the servo boards?

Follow-up - if so, should we pop out the dampers and clean them?

Thanks!

 

The CCU supervise the movement and stops it if the servo does not respond to applied motor signals. However, we sometimes see burnt CCU servo outputs, but this is probably mainly caused by excessive motor current due to wear. All details on this can be seen in chapter Electric flap servos here.
Cheers,
Tore

 

"The CCU supervise the movement and stops it if the servo does not respond to applied motor signals."

Actually the servo motor driver IC can be damaged even though the microcontroller
monitors the servo motor's position. Each IC functions as a basic 'H-Bridge' circuit.

 

All buttons pressed, everything is working.

Awesome!

 

It's concerning and unfortunate that the cause wasn't identified.

 

I hear ya!! Pressing that defrost button was terrifying.

But what can ya do? I've tested what can be tested and I've fixed what can be fixed.

G