Oven not heating up

[garrymum]

We have a Zanussi ZBF 860 X oven. A few times in the last couple of weeks whilst on it has just tripped and turned itself off. After 5 or so mins it comes back on and seems ok.

Tonight, it tripped again but now it is not heating up.

Is this the element thats gone?

 

[breezer]

what has tripped?

and it may be the element or it may be the stat, i would go for element first

 

[garrymum]

what has tripped?

and it may be the element or it may be the stat, i would go for element first

Thanks for the reply. Bit of an update, I tested the oven again about an hour after it initially tripped and it seems ok now.

When I say tripped, it hasn't tripped the RCD in the main CU, it has just tripped itself. i.e. cuts all power, no clock or anything. After several minutes it comes back on.

It's as if it is getting too hot, tripping out, then when cool coming back on again.

 

[Sleepyhead]

The safety stat is tripping out.
Either overheating or safety stat is faulty.

 

[garrymum]

The safety stat is tripping out.
Either overheating or safety stat is faulty.

Thanks. Is it a DIY job to remove or do I need to book a service call from Zanussi?

 

[Sleepyhead]

Simple enough job.
Only problem is actually diagnosing what is causing the stat to trip.
Is it, faulty stat? faulty circulation fan? faulty cooling fan? bad connection on wiring? or a faulty element?

If either fan runs too slowly, or not at all, this will trip the stat.
If the element gets too hot, this will trip the stat (possibly both stats).

 

[garrymum]

Simple enough job.
Only problem is actually diagnosing what is causing the stat to trip.
Is it, faulty stat? faulty circulation fan? faulty cooling fan? bad connection on wiring? or a faulty element?

If either fan runs too slowly, or not at all, this will trip the stat.
If the element gets too hot, this will trip the stat (possibly both stats).

Thanks. I have read another post on usenet that it could be dust on the cooling fan or something which reduces it effectiveness cooling all the electronics. The oven does have a vent about the controls which emits warm air. How would I go about cleaning these vents to allow better airflow?

 

[breezer]

paint brush (no paint) and vacuum cleaner?