TOC for the dryer goes open circuit
Miele WT2680
Hi, the TOC for the dryer goes open circuit about once a month. I have replaced the temperature limiter for a new one but it still happens. Have Miele increased the temperature rating of this component. Thank you for any help.
Solution Summary
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This thread was marked as solved. Here's a summary of the problem and the fix, generated from the discussion below.
Miele WT2680 dryer thermal cut-out opening due to intermittent fan fault
- The problem
- On a Miele WT2680 washer-dryer, the dryer TOC/temperature limiter was going open circuit about once a month. Replacing the temperature limiter did not stop the repeat failure.
- Likely cause
- The accepted diagnosis was overheating of the dryer circuit. Possible causes discussed were blocked airflow, condenser chamber blockage, or loss of trickle water into the condenser chamber, but the original poster later confirmed the dryer fan was intermittent and not clogged, making the fan fault the strongest supported cause.
- What fixed it
- The advised approach was to investigate overheating causes, especially the fan and airflow path. The original poster dismantled the dryer, checked the fan and found it started intermittently. No repair was carried out; after checking the cost of the replacement part, the owner decided to scrap the machine.
- Checks to try
- Replaced the temperature limiter/TOC
- Dismantled the dryer
- Checked the fan for clogging
- Confirmed the fan started intermittently
- Checked the likely fault was not due to electronics issues
- Parts or tools mentioned
- Temperature limiter/TOC
- Dryer fan
Safety: Further diagnosis should be carried out by a suitably qualified appliance engineer.
7 Answers
Hi. It may be responding to overheating. The fan not running or it’s blocked, or a blockage somewhere in the condenser chamber, or if the trickle of water into the condenser chamber has stopped, all these faults can cause it to over heat.
On the other hand they should all stop the dryer from drying properly too. So if during the time when the TOC is still working the dryer works perfectly then that would imply none of the above faults are present.
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Thanks for the reply Andy, that is helpful. I have dismantled the dryer and checked the fan etc. I will carry on with the fault finding and let you know what I find,
Terry
Cheers. In case you haven't see it my article here offers more advice Laundry comes out of washer dryer hot & steamy
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Hi Andy, yes I did read the article, thanks. I have now discovered that the fan intermittently starts. I have dismantled it and there isn't anything clogging it. On checking the price of a new part have decided to scrap the machine. Thanks for your help.
Thanks. I presume the connections and wires leading to the fan are OK.
Need Professional Help or Spare Parts?
Hi Andy, yes it's definitely the fan. I am a retired television engineer and the electronics are not a problem for me. I am disappointed though, the machine has not had excessive use and the washer part is still fine. However, thanks again Terry.
It's a shame for sure. It'll still work fine as just a washing machine but if you need a washer dryer that's that.
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