On Monday, 1 February 2021 at 09:56:01 UTC, Nick Odell wrote:
On Sun, 31 Jan 2021 15:00:21 -0600, Alan wrote:

On Sun, 31 Jan 2021 12:24:47 -0800, Mike Gibbons wrote:

Hi,

I have a Hotpoint AHP662X built in oven with a fault. If anyone can
help with the diagnosis I'd be very grateful. Here's what happens:

1. Turn on oven - normal fan setting.
2. Oven warms up normally, thermostat clicks and the heating up light
goes off.
3. After a while - 10 to 30 mins - oven goes off entirely. Fan stopped
clock display goes off.
4. A few minutes later the power comes back on.
5. Oven works for a while before repeating the cutting out cycle.


The Overheat thermostat or its fan are a likely cause. Has it got a case
fan, not for cooking, but to keep the electrics cool? This is normally a
100mm or so fan on the back casing.
It is controlled by either a timer pcb, or a stat. If the internal casing
overheats the stat cuts all power.
Also, on some ovens, the overheat stats for the oven also cut all power.
Check the fan first if it has one, then the 2 or 3 stats.
Another diagnostic question I'd ask is: how hot are you setting it and
how hot is it actually getting before it cuts out?

My son had a similar problem with a similar oven: the oven thermostat
had failed so the thing kept on heating up until the thermal cut-out
-erme- cut out. That took around half an hour from switch-on IIRC.

Nick
Hi Nick,

Good point. I have it set to 200 degrees. The main thermostat gives the appearance of working:

Turn oven on - warming up light comes on.
Some time later a click sounds and the light goes off.
Some time after that another click and the light comes back on.

I'm pretty sure that the oven turns itself off when the warming up light is off.

So could it be that the thermostat isn't working even though it looks like it is so the oven keeps on heating up until the overheat trips?

I need to find a way to measure the oven temperature

Mike