An ancillary repair ..you know the type.."while you are here, can you take a look at..." This time is was for a Dacor downdraft vent system RV36S
Anyhow, never worked on one of these rising vent systems before but I decided to dive in while I was there. Pressing the button on the top to raise lower etc has no effect, no noise, no humming...just dead.
I confirmed power is getting to the unit. After removing the small control box cover , I could see the main control board, part no. 700991 appears to have burn marks.
Now having looked at the board on the web, I see what appears to be a replaceable glass fuse. I did not see it while there as that part of the board was obscured.
1) Is there a way to determine if the failure is the control board or the switch
2) would a blown fuse at the board cause the unit to be dead, and if so you guys think I need to make another exploratory visit just to test it . If I have to go back to make a determination between board and switch then this question is irrelevant
3) I did not see how the front plenum was attached. I was able to remove the panel to access the motor but the plenum needs to be removed, i guess, to better access the main board and switch.
4) I read a previous thread where the complaint was the vent was rising and lowering constantly and the remedy (i guess it solved the problem as the ungrateful grasshopper did not provide a follow up response) was provided by a bulletin regarding replacing the drive motor limit/switch combination. see http://appliantology...36*#entry175374. Could this also be applicable to my situation?