Tripping oven

Danny30

Hi, I wonder if anyone can help me determine which part is tripping my oven.

I have a built in double under oven which has only started tripping the fuse on the circuit board everytime the upper oven function is switched on. When any of the other functions are switched on the upper oven including the lamp the fuse doesn't trip. Also all the functions in the lower oven are working well. There is no fan on the upper oven. 

I also bought a heating element for the top oven and have changed it over but it hasn't helped.  

Does anyone have a clue what part could be fault? 

Murmansk

You might want to edit the subject so it says tripping not tipping! Maybe "oven tripping circuit breaker" or "oven tripping RDC"

Section62

Danny30 said:

Hi, I wonder if anyone can help me determine which part is tripping my oven.

I have a built in double under oven which has only started tripping the fuse on the circuit board everytime the upper oven function is switched on. When any of the other functions are switched on the upper oven including the lamp the fuse doesn't trip. Also all the functions in the lower oven are working well. There is no fan on the upper oven. 

I also bought a heating element for the top oven and have changed it over but it hasn't helped.  

Does anyone have a clue what part could be fault? 

Which 'fuse' is tripping?

Is it a fuse on the oven's circuit board, or a 'MCB' on the consumer unit, or a RCD on the consumer unit?

Danny30

 The fuse on the consumer unit.
The one between the yellow switch and the 2 red switches on the image below. I don't know why the the one labelled oven doesn't trip though.

TadleyBaggie

That looks like the RCD, which means there is current leakage between live and earth (might only be a tiny milliamp figure). The oven fuse is to protect against an overcurrent situation, which this is not.

Faulty heating element would be my guess.

victor2

The RCD is detecting a fault, before it becomes big enough to trip the dedicated breaker for the cooker.

The RCD is by design very sensitive, and will trip if a slight leakage of current to earth is detected, for example.

Could be a faulty switch on the oven, or just faulty wiring somewhere. Not a fault in the element since you have replaced that.

Very difficult to find, an experienced electrician might be able to narrow it down, but it might be something like a faulty circuit board, which could be difficult or impossible to replace.

Section62

Danny30 said:

 The fuse on the consumer unit.
The one between the yellow switch and the 2 red switches on the image below. I don't know why the the one labelled oven doesn't trip though.

You really need to call in an appliance repair technician - ideally one who specialises in ovens.

Tracking down an earth leakage fault without the right equipment is near impossible without a huge amount of luck.  Swapping parts out is one method, but as you've tried that with the element (one of the most likely possibilities) without joy, then it really needs expert attention.

Plus it can be dangerous working on ovens and other appliances if you are unsure what you are doing, so this really is a job for a professional.

Danny30

Thanks guys for your replies. I might just buy a new oven as it seems impossible to know without a technician which with the cost plus a replacement part plus the technician possible having to come again, it won't be far off a new machine. That one cost me me around £400 2 years ago and I get a new one with minor scuffs for around £300 - £400

Bendy_House

Danny, the ONLY thing that trips the RCD is when the upper oven thermostat is turned up? Ie, it doesn't trip with just the oven light, or even when the actual oven itself is first 'selected', but trips when the temp selector is then turned up to 'click' point?

This upper oven has a grill element? And when it's set to 'oven' (ie convection), I'm guessing two elements come on, the grill and one under the base?

The fault is in the element that you didn't replace

Ok, that's clearly only a guess... But these nuisance RCD trips are almost always due to a leaky element, ie one that's starting to fail, or perhaps hasn't been used for a good while and has become damp (more rare).

Make and model of oven?

Danny30

Bendy_House said:

Danny, the ONLY thing that trips the RCD is when the upper oven thermostat is turned up? Ie, it doesn't trip with just the oven light, or even when the actual oven itself is first 'selected', but trips when the temp selector is then turned up to 'click' point?

This upper oven has a grill element? And when it's set to 'oven' (ie convection), I'm guessing two elements come on, the grill and one under the base?

The fault is in the element that you didn't replace

Ok, that's clearly only a guess... But these nuisance RCD trips are almost always due to a leaky element, ie one that's starting to fail, or perhaps hasn't been used for a good while and has become damp (more rare).

Make and model of oven?

Thank you Bendy, I can't see any other elements. The oven is a Belling BI702FPCT (444444783). 

badger09

I would expect an electric oven to last more than 2 years! (assuming you bought it new). 

Have you contacted Belling about this? Even if they can’t/won’t help, manufacturers often have dedicated a forum for advice on specific models especially for common faults😏. 

(Not suggesting posters on here don’t know what they’re talking about)