Oven is about 10 - 15 years old.
After 10-15 years, the temperature control may have become faulty.
SOURCE: oven taking a long timt to heat to temperature
Try shutting off the breaker for about 10 minutes - then bring the power back on
SOURCE: Bosch oven not heating to temp
Dear customer,
i recommend u to try the following routine to sort out this problem
hope u find this useful. thank you.
SOURCE: oven turns on but does not heat up
If fan is working o/k, then you need to fit a new oven element.
Please rate my solution.
Thanks.
SOURCE: My Bosch HBN 5605 .0B oven has a 15-20 degree
I detected a similar problem following the sudden appearance of Err1 in the display. (Oven 4-5 years old, and the grill element failed when it was 3-4 years old). This indicated a temperature sensor problem. My local dealer came with his Thermocouple and confirmed an "under temperature" reading on the standard and baking settings. I agree that the fan setting is probably OK. He replaced the sensor. I monitored the situation for a while and was not happy because an under temperature could be quite dangerous when cooking certain foods, and also causes problems when baking bread.
The location of the oven sensor is also a problem because it is at the top right by the grill which also serves as the top heat source.
I had corresponded with Bosch about this and their response was, frankly, less than satisfactory. In the end I decided to call out their engineer (cost £85-ish) who wired my oven up to his computer. In the end he said that the oven was working as it should be (despite it taking a very long time to actually reach the target temperature of 200C.
In my view of I want 200C, then I should get 200C, not an approximation.
Interestingly the secret info (not in the manual) is that the temperature bar readout does not indicate that it has reached the actual temperature, but may be 90% of the temperature (so if you want 200C you get 180C.
An unsatisfactory solution is to get an oven temperature of the meat probe type and put that in the oven, then you will get a more accurate reading of the temperature. You would need one that goes above 200C (my first one only goes to 200 but I have found another that goes to 250C). Mine is by CDN model DTP482, any good cook shop should stock this.
Andrew Finch
Hi,
If
your electric oven is taking too long to heat or just not heating up
right, then check out this tip that will give more detail about your
problem.
Oven
Problems Electric Oven is Heating Slowly or Poorly
heatman101
oven is not heating then you probably have a bad heating element in your oven. This is not that hard to fix yourself... Oven is Heating Slowly or Poorly120 views
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