Cannon Oven taking long time to get hot help please

happyhero

[FONT=&quot]Hi I am retired but have electrical knowledge from my old job and I have a Cannon floor standing oven, model C60ETX which is not working properly.[/FONT]

[FONT=&quot]It seems to be taking forever to get to the maximum temperature of 230deg which my wife uses all the time as a keen cook.[/FONT]

[FONT=&quot]Now a bit of history, I think it is about 8 years old but in good condition. It did the same thing in October 2018 so I took the back off and tested everything. I found the element round the oven fan blown and so ordered and fitted new. I also replaced the potentiometer at the same time as it looked cruddy although to be honest I probably jumped the gun having found that to be the cure in the past (it probably didn't need replacing). I watched the oven fan and found it to be too slow for what I thought it should be like so I took it out and checked to see if I could do anything. I found it to be a bit sticky as if it was a little gunged up so I cleaned it and put my cordless drill on the spindle and spun it while spraying it with degreaser and then cleaning it again after. It was a lot better after this, spinning quite freely. I refitted it and it spun much faster (I could really hear it running fast) I could see that through the glass door. The wife was happy again and everything worked great and fast.[/FONT]

[FONT=&quot]Anyway roll on 4 months and now it’s doing a similar thing so I thought I know what’s wrong, that element has gone again, but it is working fine, I checked the ohms and all seems good with the 2 elements, one around the fan and one on the roof of the oven.[/FONT]
[FONT=&quot] The fan may not be quite as fast, I can’t be sure, my wife thinks it’s still turning as it should but I remember it making more noise and turning faster I thought. It’s still fast enough to be a blur once running full so it’s difficult to be sure either way.[/FONT]

[FONT=&quot]I then thought I’ll get an exploded diagram of the appliance but I cannot find that anywhere so I then thought I’ll check the parts list and see if it has another element. Although not the best way as the parts fit many models but I saw they do a base element so I checked my oven thinking that must have failed but there is no base element on my oven. There are no cables going to the bottom, even discreetly, and it takes major work to open the bottom so I am pretty confident there is no base element on our model.[/FONT]

[FONT=&quot]I cannot believe the potentiometer has gone again as they seem to last quite well, the elements are ok so I’m thinking it could be the fan but is that what happens when the fan slows down that it struggles to reach the high temperature? I mean how would a fan help it increase temperature quickly surely it just circulates the heat evenly?[/FONT]

[FONT=&quot]I know there is still the probe I have not tested but I didn’t find any connections to test for that and I am not sure what reading I would get off it anyway if I saw it. I assume the cable shoots off to the front to the controls area, it’s not testable at the back.[/FONT]

[FONT=&quot]What should I do next? Can anybody guide me what to do next please?[/FONT]

[FONT=&quot]Any help or info appreciated.[/FONT]

happyhero

sorry typo above on model number, I have corrected it above too now C60ETX

shaun_from_Africa

This spares website shows both an upper and lower element for that oven

https://www.ransomspares.co.uk/parts/brands/cannon/cookers-hobs/c60etx/heater-element-1600w/13023.htm

https://www.ransomspares.co.uk/parts/brands/cannon/cookers-hobs/c60etx/base-lower-element-1200w/142742.htm

jimmo

When the fan went on my Hotpoint the element was glowing like a radiant ring but virtually no heat entered the oven proper.
A new fan fixed it but make sure you get a new gasket (sold separately on Espares where I got mine).

happyhero

I wasn't confident the fan was spinning freely enough so I have taken it off and serviced it again and it spins longer after stopping now and I think goes faster while running but I Googled how long ovens take to heat to full and it seems most do it in 10minutes where as ours is taking 45 minutes to reach 230 degrees (the maximum) so something is very wrong.

Its performing similar to when the fan element failed so it really makes me think there is another element failed but I can see and have tested both the fan element and oven roof element and I cant find any other element. I havent opened the bottome as that is quite awkward to do, implying to me that it is not something you are meant to do and watching online videos shows the base element, if there is one being removed from the back at base level. I can see no wires going to the base but the way this oven is performing I'd say really makes it seem an elemnt has failed.

Is there anyway I can confirm how many elemnts the oven has?

Googling it I cannot find any exploded views nor any wiring diagrams. I've even looked up current models that look the same and they dont seem to have any wiring diagrams available either.

Why is it so difficult, at one time you could get exploded diagrams for loads of things. Its like a secret now. One diagram and I would know straight away if there was any other illusive element.