Problem with clock and Auto setting

this is as much as the manual says
After your appliance is connected to your mains supply for the
first time, the numbers on the timer display will flash. Before
you can select a cooking function or set a temperature, you
must set the appliance into manual operation mode.
o To select manual operation mode, press the manual operation
button (9) on the control panel.

http://www.manualslib.com/manual/956107/Baumatic-Bo625ss.html?page=3#manual

Does the "manual" button not do anything in this state?
Have you tried this sequence?:

SETTING THE TIME OF DAY

Step 1 Make sure all oven controls are turned Off.

Step 2 Check the electricity supply to the cooker is turned on.

Step 3 When switched on the display will show 0.00 and the Auto symbol,

flashing intermittently.

Step 4 Press & hold in both the Cook Period & End Time buttons together.

Step 5 With the Cook Period & End Time buttons still held in, press either the "+"

or "-" buttons to set the correct time of day.
Step 6 Release all the buttons simultaneously.

Make sure the clock is not set to "auto" function or on "timer" mode. The oven will not start until the correct time has come up. If the clock is not working , this is likely to be the problem. See if there is a manual operation control or switch. You may have to get a new clock or arrange for the clock to be bypassed so the oven can work without it. Most electronic clocks can stop an oven from working if they fail.

Turn the oven off at the wall. When you turn it back on the clock will flash. Use the + or - to adjust the clock then use the middle button to scroll through the duration, start and end times of the auto cook function until you end up back at the clock. The oven symbol will always be displayed in clock mode unless the auto cook function is set.

Hope this helps.

Craig.

Ensure that the clock is set and that is not in auto mode, the clock is only linked to the main oven and therefore it will not opearte if the clock is not set correctly, all the best

If you have had a power failure, you may find that the clock has reset. If the clock has an auto setting this will be linked to the main oven only and therefore the clock will need to set to manual for the oven to work. The alternative is that the oven element has blown and this is what tripped your power, in which case you will need to replace the element. Hopefully, the first scenario is correct and will be a lot cheaper.
All the best, pls leave feedback or reply for further assistance with make and model number.

power to the main oven has to go through the oven clock if time is not set main oven will not work also if clock set on auto time rather than manual oven will not work conversley if clock is faulty it will not work top oven is unaffected as oven clock auto timer cannot be used on top oven.try resetting power of and on again reset time on clock if clock not faulty oven will now work.

bad digital control board if tis just a clock and all the settings can be done with a knob and not the board then the replacement wont be too expensive but if that board controls eveything which i suspect it does then its going to be at least 150 more to repair than if it was just a clock display

Turn it on and while its on completely unplug it wait then replug it, this should reset it, if this does not work, and it should, you will probally have to replace timer, but I hate to recommend this, they do not go bad ofen, but on acasion they do, let me know i hope this does it without replacing the timer

Rangemaster 110. Ovens not lighting due to faulty auto/clock. FIXED!
Someone, somewhere on the internet had the solution to my problem but I can't find the link again to thank them! If you don't mind losing the clock/timer auto function this is for you and it's free! Just takes a bit of time.
Basically you need to lift/open up the LH &RH hobs to get at the wires behind the clock. You should see 2 blue(neutral) wires coming directly from the back of the clock. Pull them out and connect together - should be easy to click them together. Then the ovens will light - but you will lose the auto/clock/timer functions. We only used the timer so not a big issue. We didn't take the control panel off but we did take ages to unscrew the hobs etc Probably took us about 2 hours going back to instruction manual we found on internet and trying to work it out but I think we've saved a lot in not replacing the unit with the usual call out charges. We made sure electrical supply was switched off and just took our time. Really chuffed!
Comment by tinling, posted on Nov 06, 2008 http://www.rangemaster.co.uk/Siteimages/Site_311/BigMedia/RM110Gas_04_06.pdf

This should allow you to see the instruction manual for the 110. There was another one somewhere showing a diagram of how to link the 2 blue wires at the back of the clock but I can't find it again! By the way our cooker is 10 years old so maybe different from newer models. We didn't have to take of the front control panel we accessed everything by lifting up the hobs to get behind the clock/timer.

Hope this helps! Ovens still working just got to go and buy a wee timer.