Repairing tumble dryer: what is this part?

[Dhillon]

Hi Minder,
I have posted on another forum (more domestic appliance related) and someone has looked at the wiring diagram to confirm there is an internal connection between the wires going to pins 2 & 3. So based on that I hope its the black wires but will have a look in the machine to find out.

 

[Minder]

Where did the wiring diagram come from?
Can you post it here?
M.

 

[Dhillon]

I'm not sure, I believe the forum member maybe a service engineer with privileged access to such diagrams. The diagram itself was not shared.

 

[Bluejets]

Many countries black is the active so my guess is an active loop off to another device/section

 

[cowdough]

high temp. limit switch?

 

[cowdough]

Hi All,
Trying to work out what is wrong with my tumble dryer. This part sits in the vent duct so I think it maybe some sort of thermal cutout device but I have no idea how to test it? It has four pins but only three are used by means of one pink and two black wires:
View attachment 27887 View attachment 27888

I know how to test a two pin thermostat but the above part I have no idea about, there seems to be continuity across all pins.

Thanks
Dhillon

high temp. limit switch?

and ive bypassed one on a dryer i had. just keep the lint trap clean and youre good. worked fine