My fan oven has just stopped working - the fan is working as there is a lot of cool air blowing out, but no heat. Does this mean that the element has broken, and will this be expensive to fix? It is now over 3 years old and I don't have breakdown insurance.
This does not mean your element is broken. Although it could be. Call Bosch and ask them if the unit has a pressure switch (you will need the model number). Pressure switches are more common on Gas ovens, but it might have one. If the pressure switch is not being activated by the fan, that could be the problem. It could be a contactor, it could be your power switch. It could be a break in the wiring. Or it could be your thermostat, or it could be the element. Service companies usually charge you for the cost of traveling to your place and around here hourly rates from $65-125 per hour for labor. It could take up to two hours to find out what the cause (or causes of the problem are) depending on how thorough they are. There could be a return trip charge as well if they need to order parts. And the cost of parts as well. you could be looking at anywhere from $300 to $1200 dollars depending on how many components might be damaged and the cost of the parts. If you want to save some money in the future, always check your fan blade to make sure it is free of debris (especially tin foil) and make sure the motor on the back of the oven has some clearance from the wall so it can cool itself.
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There is a cooling fan In a STOVES 720 to keep the fabric of the oven cool. If this fails the overheat thermostats will cut in and shut the heating elements off. The cooling fan does in fact blow air out of various places in and around the doors. The top oven has a small element and takes a long time to warm up. If you are not confident that the thermostats are working correctly, then I suggest you purchase an oven thermometer from someone like Lakeland and see how that relate to what you are actually setting on the cooker dial. As I said the top oven leave a lot to be desired!
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TUTORIALS 1, If the Bosch fan motorin the back of the oven is going round and
the temperature light is on (normally little red light), but there is no heat
then you will probably need a new oven element, these are generally very easy
to fit and readily available from our website these can be tested with a
electric meter. To gain access to the BOSCHelement you will
have to remove the back plate from inside the oven. Once removed you will see
the fan and element, if you
look closely at the elementyou will
probably see a small hole burnt in it where it has blown. Sometimes however
there is no evidence of a fault but the elementis open circuit ie:
broken inside the element casing, either way it will need replacing. Some
elements will are fixed from inside the oven and some are held in place by nuts
from the rear of the machine. 2, If your BOSCH fan
oven is getting warm but takes a very long time to cook or is burning the food
more on one side than the other, then you need to check if your oven fan motoris working you will
see the blade turning fast if it is ok. if the element is heating but the fan motoris not blowing the heat into the oven then
you need To replace the oven fan motoris a little more
expensive and a bit more involved. 3. If you have the opposite problem ie: your oven is over heating
and burning everything then you will need to replace your BOSCH oven thermostat 4, A quite common and easily overlooked answer is if your BOSCH oven is not working at all ie: no
heat and no fan then the chances are that someone has put the oven timerinto AUTO mode,
simply put oven back to MANUAL mode and all should be working again.
The air you can hear blowing will be from the exterior cooling fan, and nothing to do with the main oven.
You need to check to seeif you have got a feed to the oven fan and element, the supply comes from the oven thermostat on the control panel.
Hope this helps.
Your oven has a fan to draw in cool air at the bottom of the front panel, pass it around the case, and then blow it out at a position towards the top of the oven. This is a completely different fan that is at the back of the oven itself.
The cooling fan is necessary as the materials in modern ovens are kept light and thin as possible to save weight and manufacturing costs, however the flipside of this is that if not cooled by the cooling fan, they would be damaged by the heat inside the oven itself.
The cooling fan will continue to run for some time after the oven is switched off, because it will wait until the oven has fully cooled down before stopping the cooling fan.
there is more to this than meets the eye if youre oven takes a long time on fan setting it may be thermostat but more likely to be fan not turning at all or quickly enough the stat capillary is above oven element and if fan not blowing air away from capillary oven stat will shut oven temp down too soon if using conventional heat eg no fan make sure there are no full size trays directly on bottom of oven this will block heat from bottom element effectively giving only half the heat output.