Cannon Cooker

[ashwayparker]

The oven on my Cannon10456G cooker has a strange fault.
It reaches the set temperature(say 160oC) but then cools down and doesn't control at the given temperature. The thermostat was replaced but this didn't cure the problem. The heaters were then replaced in case they were faulty, but the problem still persists. I can't think of anything else to change.
Is there anything else that could be faulty?

 

[Diyisfun]

There may be a thermal cut out, which is there to stop the electronic overheating, that's if it has an electronic timer.

 

[jj4091]

Is it a fan oven model? Does the indicator stay lit when it starts to cool?

 

[ashwayparker]

Thanks for replying.
The cooker has 2 ovens, a fan oven & a non-fan oven. It is the non-fan oven that isn't working.
I did think there may be a thermal cut-out somewhere. Where would it be & what does it look like?

 

[ashwayparker]

The indicator light comes on when the oven is cooling down, but the heaters don't.

 

[jj4091]

When you say the t/stat was replaced do you mean the energy regulator ( that the control knob pushes onto) or the overheat stat?

 

[ashwayparker]

The thermostat and the controller we're replaced. It comes as a unit.
I don't know anything about an over temperature control!!

 

[jj4091]

When it cools down does it go completely cold & if you turn the regulator up when the problem occurs do the elements start to heat again?

 

[Diyisfun]

Thermal cut out will be in the control panel, they are usually flat 2 wires going to it, (its a bi metal strip)

 

[ashwayparker]

It cools down completely. Increasing the temperature control does nothing, the heaters don't come back on.
I did try setting the control at 100oC and it did appear to control at that temperature, but not at any higher temperature.

 

[jj4091]

It seems to me that the only thing left is either the temp regulator that was fitted is faulty or you have a wiring fault between it & the elements or this stat is faulty http://www.espares.co.uk/part/cooke...1604/880/0/0/839759/oven-thermostat-200c.html ( but I'm not sure if it is the one for the oven with or without the fan )

 

[ashwayparker]

Thanks for the advice. What is bemusing me is that whatever I try the fault remains.

 

[ashwayparker]

I have managed to obtain the circuit diagram for this cooker. There is a cut-out between the thermostat and the heaters. However this doesn't appear on the parts list!!
All I have to do now is find the correct part.
Thanks for all your help & comments.

 

[Diyisfun]