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May I have the model number off the label on the oven ,please?
Bosch Wall Oven HBL755AUC
The problem lies within the computer board that controls the latch motor. The fact that the keypad is non responsive would confirm that is the problem. But you should check any connections from the touch pad to the computer board, to make sure you don't have a bad connection on a cable. The part seems to be hard to get, no one stocks it other than one I could find for you on Ebay.
The price is half what the parts store are showing.
Connections to the touch pad appear to be good. Does the fact that this happened during a self cleaning cycle mean anything? Does the fact that both lights inside the top oven remain on mean anything? If there is nothing else to try I will order a power board tomorrow. Thank you for your help on this.
Yes I think that the fact that the lights stay on, is indicating something is stuck on and was probably overheated by the self clean cycle.And you cant get the touch pad to respond pretty much leads me to the main board..
May I ask that you please rate my help to you as positive for JA?You may still come back with followup questions if neededThanks
The link you provided above is to the touch pad circuit board. Is this what I need to replace or is it the main power board
Bosch Power Board
Part Number: AP3193815
MFG Part Number: 489259
I figured the computer board, because you are saying the touch panel will not respond. If you could program it and then say the bake unit would not come on, then I might think the relay may be stuck on the relay board. But that is not what you are describing.
I just replaced the power board but I still get the same message...Unlocking Door and a frozen keypad. Is there a way to manually trigger the locking/unlocking process?
Yes I do. I have a Bosch Double Oven (HBL755AUC) that displays an Unlocking Door error message along with a non-responsive keypad. The lights are also on in the upper oven. This all started after we ran a self cleaning cycle.
I've replaced the Door Latch Motor on the upper oven with a new part and then, after unsuccessful testing, replaced the lower oven Door Latch Motor with the motor that was on the top oven. After that didn't work I put in a new Power Board but I'm still seeing the same issues. Any ideas? Is there a way to reset the locking/unlocking process? I can open and close both oven doors.
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Why have you not checked the door light switch? That is the most obvious part to have checked first as the control is confused because it thinks the door is latched and closed during the automatic test at power-up but the door switch is not confirming that state. The switch is on the left side and the hinge contacts it, so the oven must be pulled out to access it. It can be quite tedious to adjust it, but it worked before so it can obviously work again.Check the switch and make repair as needed. I do not think anything complicated or expensive is needed here. You can probably sell that unneeded board on ebay to salvage some of your expense.
Thank you for the tip to adjust the door switch. After making an adjustment the oven lights are no longer on when the doors are closed. i powered the system off and on again at the breaker but still receive an unlocking door error message and the keypad is non-responsive. Is there a certain amount of time I should wait between powering off and then powering back on? I waited about 5 seconds.
The latch motors didn't cycle. A fan starts for about a second and then shuts down which is followed by one beep and an unlocking door error message.
Thank you for this advice. I've been purchasing parts from http://www.appliancepartspros.com/parts-for-bosch-hbl755-auc-fd-8207.html Which interface board do I need?
Is this Relay Board the item you're referencing? http://www.appliancepartspros.com/bosch-relay-board-hbl-489277-ap3193596.html
I trust this is what you're referencing
Thank you for your help
Thank you for your continued help. It is greatly appreciated. My understanding is that as soon as I provide a rating my ability to ask is over. Maybe that isn't true. Please let me know.
I just put in the new display board but it didn't solve my problem. When the breaker is turned on the blowers start up and then stop, I hear two beeps and the display reads "Unlocking Door". I have rechecked all the connections to both the new power board and the new display board. What else can I try?
The board didn't come with any instructions so no I didn't do any configuration.
The board didn't come with any instructions so no I didn't do any configuration. Instructions might not help becuase my touch pad is not responsive. I have a blinking clock time, an unlocking door message and a dead keypad.
The final result that resolved this issue was that the power lines connecting the lower door latch motor were reversed.
I also found out the answer to a question I asked multiple times. To reset the system once something like a new power board is put in the Start button needs to be pressed and held until a beep is heard. This takes a full minute to happen.
Thank you for picking up the torch and trying to help when the first guy ran out of ideas.