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Re: Smeg dual fuel cooker model number UK80MFX1
It sounds like you have a problem with the thermostat that tells the oven to switch off when it gets to the right temperature if the temperature exceeds the setting you choose then the oven will shut down as a safety feature you can get these replaced but because of the age i wouldnt know where to get them from if you get somenody to come and replace it for you it would be cheaper than buying new cooker then this should get your cooker working nrmally i had this problem but on a different make and model but doing this dolved the problem the only problem i did have was locating the right part number but after i got it it only took repair man 1 hour to fit it and done it for less than 50 quid hope this is some help ..................................
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My name is Peter. I am a retired field service appliance technician.
You may not have a problem. Normally your oven will rise about 40 degrees F. above the set temperature and then shut down, until the oven temperature falls 40 degrees F. below the set temperature, then the oven turns back on.
Your oven temperature is controlled by you oven thermocouple.
You also have a high temperature limit switch, which turns the fan on when you go too far above the set temperature to vent the oven. This may be bad.
Typically an oven beeps when the interior temperature macthes the temperature where you set the dial. This is an audible signal to that fact and particularly helpful when you need to pre-heat the oven. For example it you want to cook something at 350 degrees, you set the dial at 350. When your oven reaches that temperature it beeps to let you know. Some cooking directions tell you to preheat your oven. In that case, when you set the dial to 350 and wait for the beep...you know you are safe to start your cooking process because the oven is now pre-heated to the temperature you set. If your recipe requires a pre-heated oven, and you don't wait for the beep, your taking a guess at what temperature you're cooking your food. Additionally, if you want to know what the internal temperature of oven is and your oven is heated...you simply turn you dial setting and listen for the beep. Again, if you set your oven at 350 and you want to know how hot your oven is... slowly turn the dial setting. If the oven beeps at 275 then that's how hot your oven has gotten. To let it finish heating to 350 just reset the dial and wait for the beep.
1. Faulty thermostat. 2. Faulty thermal cut out switch. (controls power to cooling fan). 3. Faulty cooling fan (not fan inside oven).
Test thermostat by setting thermostat to low temperature like 60 oC. If oven gets much hotter then its a faulty thermostat. To test cooling fan and thermal switch take oven out and remove top or rear panels to expose components. When oven gets hot the cooling fan should turn on. If it doesn't then check to see if there is a mains voltage present. If mains current exist but fan is not turning then replace fan. If mains voltage is not present then its the thermal switch.
Cooking is determined by 3 things so let's look at what they are and what they do.
The Fan Oven Element - This is very much the same as a light bulb only instead of giving off light it gives off heat. Like a light that is switched On or Off by a wall switch, the Element is switched On or Off by a Thermostat according to the temperature required. In short if the element fails your oven will be cold.
The Fan & Motor - This sucks the air in through the centre mesh and circulates it around the Element and pushes the heated air out of the top, bottom and sides of the back-plate. Fan ovens cannot heat properly if the fan is not running OR if the fan runs too slowly as the motor starts to fail.
The Thermostat. - This is basically an On/Off Switch that responds to the temperature in the oven. If The Fan is running correctly and you are achieving some temperature in the oven, then the fault will be with the Thermostat.
I hope this Helps - Terry
ALWAYS ISOLATE THE POWER SUPPLY BEFORE WORKING ON THEI APPLIANCE!