Where is the broiler function on the ariston MB 91 IX oven?

The issue you're experiencing with your Bosch convection microwave not heating in convection mode could be caused by a few different things. Here are a few things to check:

1. Check the settings: Make sure that the microwave is set to convection mode and that the temperature and time settings are correct.
2. Check the element: The bottom heating element is responsible for providing heat during convection mode. Make sure that the element is not damaged or burnt out. You can visually inspect it, if it is damaged it will need to be replaced.
3. Check the fan: The fan is responsible for circulating hot air during convection mode. Make sure that the fan is not blocked or damaged. If it is, it will need to be replaced.
4. Check the control board: The control board is responsible for controlling the functions of the microwave. A malfunctioning control board could prevent the microwave from heating in convection mode.
5. Check for a blown thermal fuse: A thermal fuse is a safety device that cuts off power to the oven if it overheats. If the thermal fuse is blown, it will need to be replaced.
6. Check for a blown thermal cut-off: A thermal cut-off is a device that cuts off power to the oven if it overheats. If the thermal cut-off is blown, it will need to be replaced.

The oven has internal fan at back of oven encircling the element that should get reshot when stat turned up high. Also there is cooling fan under lid to keep the wiring area cool.This should stay on for around ten - fifteen minutes after cooking finished. David "The Famous Forry"

The upper element is for broiling and should not come on until you tell it broil. If it is coming on as soon as you turn on the breaker then it sounds like the printed circuit control board is bad. There is a relay on the board that engages when you program in the broiler. The relay can be hard to find and may not be removable. My broiler would come on when I programmed in the bake mode, go into runaway heat, put up a F10 code, and shut off. I could not clear it until I programmed in the clean mode for 2 hours. Now it works great.

Manufacture and model would be nice ohm out the bake element might be open some are in the oven cavity others are hidden below the lower oven plate and have to check from the rear by removing back cover in the bake mode the broil element element cycles on/off thats why you have some heat.

I have a DACOR double electric oven model ECD230SCH. the top oven lower element went out 1 and 1/2 years ago, but the top element broiler works. Yesterday the bottom oven did the same thing- bottom element not working along with convection. Pulled off doors and cut breaker. Checked thermal switch on top off oven- closed good. Pull out element and Ohm'ed out- good. Now pulled over and out oven top panel to get to the control boards. Found a nice set of schematics for the over control boards and electronics. Sat down and pin-pointed both relays that supply power to upper and lower oven "lower" heating elements. these are on 2 different boards- upper over relays on bigger board on the left with the transformer. Lower oven on the right smaller board. Hardest pain in the rear was just getting the little plastic stand offs to push back through the board to get it off. Finally got it off and inspected board. Low and behold the relay I pin-pointed had a burn/open connection on the solder joint. Re-soldered tested oven and lower oven lower heat element works now! Went to the next board and got that off and same exact problem on the rely for the top oven lower element. Re-solder and test- good!! Put everything together and ran over to 350 on top and lower and back to normal. Wife very happy she did not have to pay a repair man big bucks to swap out the control boards- would have had to replace both.

I have a degree in electronic technology so as a technician for many years did low and high voltage component level repairs. But pretty easy and you can visually see the open solder joint on the back of the board at the relay leg.
Jim B Roseville, CA.

what is your oven if is gas or electric, if is gas easy to preheat by using lower heating element, if electric? that your unit have convection? or not? coz some probelm of the oven is, 1 if the oven is no convection or your oven is single heating in upper element,if your oven have a timer and cut off in 15minute? dont use timer,use a manual timer by it your self,if you want to reach the degrees that you want check your oven if der a lower and upper heating element with convection function,that the one is the most easy way to reach the degree that you want to reach.

Hi,
Check out this tip that I wrote about this problem...

http://www.fixya.com/support/r4511800-oven_problems_electric_oven_heating

heatman101

My lower oven will not heat up (Model D030FS) in broiler, bake or clean mode.

Print the following infore for future ref if you wish. How it works is simple tage a look at it in Motion
Component Test Procedure Results
Electronic
range control
F1−1 –Upper Oven >650°F with door unlocked.............................
F1−2 –Lower Oven >650°F with door unlocked.............................
F1−3 –Upper Oven >950°F with door locked.................................
F1−4 –Lower Oven >950°F with door locked.................................
F1−7 –Membrane switch is not responding ...................................
F3−1 –Upper sensor is shorted at (< 100 ω) or
open at (>5 K ω) ...............................................................
F3−2 –Lower sensor is shorted at (< 100 ω) or
open at (>5 K ω) ...............................................................
Check actual upper oven temperature,
if > 650°F check sensor.
Check actual lower oven temperature,
if > 650°F check sensor.
Check actual upper oven temperature,
if > 950°F check sensor.
Check actual lower oven temperature,
if > 950°F check sensor.
Check membrane switch for connection or damage.
Check upper sensor, harness, and connections
Check upper sensor, harness, and connections
Engineering
Test Mode
Press BAKE pad.
Enter 100°F using the number pads.
Immediately push and hold BAKE pad for appropriate oven
approximately 3 seconds.
This mode can also be entered by pressing the hidden pad
for 3 second located to the left of the lower oven light pad.
Used to view the actual oven temperature for both ovens at all
times, even when an oven function is active.
This mode will also display the current fault code for 5
seconds in the time digits.
Fault codes
accessed
through
Engineering
Test Mode
F0−0 –No fault .................................................................
F1−5 –Upper hardware failure within control ....................
F1−6 –Lower hardware failure within control.....................
F1−8 –Shorted key in membrane switch ..........................
F1−9 –Internal communication errors within control .........
F1−A –Upper latch switches ............................................
F1−B –Lower latch switches.............................................
F1−C –Upper door switch.................................................
F1−D –Lower door switch.................................................
F1−E –Sensor input not calibrated ...................................
F1−H –EEPROM error .....................................................
F1−L –Temp in ovens are the same for long period .........
F1−N –Internal voltage on control not working .................
F9−1 –Upper lock switch is not correct.............................
F9−2 –Upper unlock switch is not correct.........................
F9−3 –Control does not see upper door lock....................
F9−4 –Lower lock switch is not correct.............................
F9−5 –Lower unlock switch is not correct.........................
F9−6 – Control does not see lower door lock ...................
EE –Control cannot read E-PROM. Unit will shut down.
Default from factory
Replace control
Replace control
Check membrane connection
Replace control
Check latch wire harness
Check latch wire harness
Check lock wire harness
Check lock wire harness
Verify sensor is operating properly
Replace control
Verify sensor is operating properly
Replace control
Check lock wire harness, and lock switch
Check lock wire harness, and lock switch
Check lock wire harness, and lock switch
Check lock wire harness, and lock switch
Check lock wire harness, and lock switch
Check lock wire harness, and lock switch
Disconnect power for 60 seconds. If EE reappears, replace ERC
Test Mode This mode must be activated within the first 5 minutes of
power up.
Press BROIL and CANCEL pad for approximately 3 seconds.
If oven temperature is greater than 400°F, the Test Mode
cannot be activated or will abort if active.
Press and hold individual pads for 4 seconds to activate.
Display will have dashes in all segments to indicate the mode is
active.
Upper Bake: Energizes upper bake element
Lower Bake: Energizes lower bake element
Upper Broil: Energizes upper broil element
Convection Bake: Energizes convection fan
Upper Oven Light: Energizes upper oven light
Lower Oven Light: Energizes lower oven light
Upper Clean: Energizes upper motorized door lock
Lower Clean: Energizes lower motorized door lock
Stop Time: Energizes Beeper
Cook Time: Displays error codes
Timer 1: Energizes ROM version
Timer 2: Energizes EEPROM version
Keep Warm: Cooling Fan
Clock: All display segments light
If functions do not perform as specified, replace ERC
Oven
temperature
adjustment
Push BAKE pad.
Enter 550°F using the number pads.
Immediately push and hold BAKE pad for appropriate oven
approximately 3 seconds.
To decrease or increase oven temperature. Push AUTO SET
pad until negative or positive numbers appear. Oven can be
adjusted from -35° to +35° (-37.2° to + 1.6° C) in 5° F (2.7° C).
To avoid over adjusting oven move temperature -5° each time.
Push OVEN CANCEL button.

If you need further help, reach me via phone at https://www.6ya.com/expert/dan_73bbd84fe1d95b61

Bake- Normal convection- both upper and lower heating elements.

Conv. Bake- Semi-forced convection- both upper and lower elements, heat is then distributed throughout the oven via the fan.

Broil- radiation- The heat is radiated by the ifrared broil element.

Broil & Fan- Radiation and Ventilation- The radiated heat from the infra-red broiling element is distributed throughout the oven via the fan.