My zanussi TC7103 s dryer , timer dial is very stiff, and now sometimes sticks when on so that the dryer just keeps going and does not automatically switch off.

sounds like a bad timer or timer motor , check it with a multimeter, they have points inside and can seize up and burn metal to the contact points . then they stick at a certain point on the dial, u can actually open and repair it by cleaning the point contact up with sand paper a bit challenging job but can be done and save u more than 100.00 bucks

Bad timer most likely, remove power and check continuity on the timer motor. Verify movement of dial.

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sounds like a new drive belt is required. pull the machine out remove the mains supply!!!!
remove the top and look into the back of the machineif you cant see the belt them remove the back of the machine, it's like a small fan felt from a car it's either come off or disintegrated in which case you'll need a new one.

There is an issue with the timer . Needs to be replaced if it worries you.

The only fix is to replace the timer.

Check for bad motor timer. Attached to dial control. Test by turning dial to timed position without starting dryer. Dial should return to off. Timer is available online.

Hi, You will need to change the timer. The timer motor has gone bad. You can test it by removing the back cover on the control panel and test the two wires going to the timer motor to see if it is getting 120V. If it is getting voltage, it should turn.
Please let me know if I can assist you further.

Thanks
Vic

I have same problem and been tol its either the heater or the thermostat inside the front of the drum open circuit hope that helps

if computer is broken that is your timer dial not worth fixing sometimes as much as a new washer but it could be your interlock you can test this by closing door set machine to a programme hit the front of your washer to the right of the door as you look at it if not take lid of make sure power is off look down inside the front of your machine were your door seal is attached to the outer drum were u hit the washer on the inside will be your interlock switch replace that before paying out for a timer m8 more than likely that is the problem