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KevinWhiteJA
KevinWhiteJA, Home Appliance Technician
Category: Appliance
Satisfied Customers: 986
Experience:  Worked on appliances for more than 15 years
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smeg model suk61cmx5 fan runninig all the time

Resolved Question:

smeg model suk61cmx5 fan runninig all the time
Submitted: 3 years ago.
Category: Appliance
Expert:  KevinWhiteJA replied 3 years ago.

KevinWhiteJA :

Hi, welcome to Just answer

KevinWhiteJA :

How old is it ?

Customer:

2006

KevinWhiteJA :

OK

KevinWhiteJA :

so now the power is there to the unit

KevinWhiteJA :

and the fan will keep on running

KevinWhiteJA :

even after the oven has cooled down

KevinWhiteJA :

is that right ?

Customer:

yes, fan runs as soon as oven is powered

KevinWhiteJA :

sorry can you please elaborate your problem

Customer:

without any of the oven or grills switched on the cooling fan is running

KevinWhiteJA :

ok

KevinWhiteJA :

When the oven is heating up, does the cooling fan cut in and run or it wont cut

KevinWhiteJA :

keeps running continuously

Customer:

there seems to be two fans when the oven is on they both run, when off just one

KevinWhiteJA :

there is just one fan in this model

KevinWhiteJA :

it should run for around 15-20 minutes after the unit is off and then stop

KevinWhiteJA :

there are three thermostats

KevinWhiteJA :

one of them is the safety cut out

KevinWhiteJA :

Full Size Image

KevinWhiteJA :

this is the first one

KevinWhiteJA :

Full Size Image

KevinWhiteJA :

and this is the second one

KevinWhiteJA :

which one has been replaced ?

Customer:

this is the one i changed to get power back

Customer:

first one

KevinWhiteJA :

ok, can you test the second one with a multimeter ?

KevinWhiteJA :

It should be on the rear of the ovens or if it is not at the rear then it is at the top but normally should be at the rear

Customer:

the second one looks the same as the first & it's normally closed

KevinWhiteJA :

ok, so when you start it works fine the lights come on fine and then it heats fine but when you turn it off the fan will keep on running

KevinWhiteJA :

I hope the thermostat is changed correctly

Customer:

yes thats right, but there was no power at all until i changed it

KevinWhiteJA :

basically there are two things that will cause this problem...first, thermal cut out (thermostat) that keeps the fan running until the unit has cooled down and second there is a four wire device that keeps the fan running

KevinWhiteJA :

if it runs continuously do you also get a burning smell ?

Customer:

no

KevinWhiteJA :

ok, can you remove the back panel and check the winding's of the fan ... If it looks fine you can remove the two connections to the main oven fan and tape them up. Then switch the oven on again and see if the cooling fan has stopped running.

Customer:

is there another circuit to power the appliance separate from the thermo switches

KevinWhiteJA :

timer control itself but I dont think that is bad as everything works fine

KevinWhiteJA :

if the thermos are fine the problem can be with the fan itself

Customer:

OK it's my mothers oven & won't be back there again until tomorrow, i will disconnect the fan then, is there a relay or something that starts the fan

KevinWhiteJA :

the fan motor and thermostat controls the fan

Customer:

OK thank you,is there any way i can get a wiring diagram just to check everything ?

KevinWhiteJA :

unfortunately I do not have access to the wiring diagram for this model

KevinWhiteJA :

If you have further questions I will be pleased to assist you – please use the REPLY link for further assistance..Please remember to RATE my answer Excellent or Good Service when you are satisfied....Thanks

KevinWhiteJA, Home Appliance Technician
Category: Appliance
Satisfied Customers: 986
Experience: Worked on appliances for more than 15 years
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