Question about Bosch Nexxt WTMC 3300 Electric Dryer

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Bosch dryert wtmc3300 no heat

I have the same problem. Took apart the dryer, pressed the reset button on the heat sensor (the black trip switch that is connected to the chamber where the heating elements are, black sensor with a red button (NC175 ELTH imprinted on it) with red wire connected to either side). This sensor is beside the air exhaust pipe and right near the back, lower right.

I had exhaust air leaking into the dryer (due to the way the external exhaust pipe was connected to the dryer exhaust pipe. I corrected this and figured my problem was that because dryer exhaust air was "leaking" into the inside of the dryer, the heater + the exhaust air leak caused the heat to trip the temperature sensor.

Well, it worked for about 10 loads and the same thing happened i.e. the heat sensor was tripped.

Am thinking of first replacing the heat sensor (figure this may be cheap and easy). If this doesn't solve the problem, I guess I have to replace the heater thermostat, wherever that is.

Any thoughts out there?

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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muttandjeff
  • 359 Answers

SOURCE: Bosch WTA4108 Dryer Not Heating

check and make sure you have 220 volts leving panel and @ the dryer motor runs on 110 volts takes 220 to heat

Posted on Dec 21, 2008

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apart4u
  • 213 Answers

SOURCE: Dryer turns on but won't heat up or tumble

Common faults -
1 The heating elements can fail (meaning open circuit)
2 There are cut-outs (T.O.C's) that might need resetting
3 The thermostats (stats) can trip out or burn out (meaning opencircuit)
4 Moderntumble dryers also have sensors and pcb's (Printed circuitboards) thesehave programs that can fail and circuitry although most should produce an errorcode showing you were the fault is.
5 Faultyconnections and burned wires may also be the fault.



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Posted on Jan 13, 2010

  • 1 Answer

SOURCE: Bosch Axxis Starts and stops

I have the same problem - did you ever find out if it is normal? a power saving option? mine dries fine, but does cut in and out continually. always has done this since new.

Posted on Mar 09, 2010

heatman101
  • 43501 Answers

SOURCE: Bosch nexxt 500 plus dryer does not heat up. I

Hi,
If you have a gas dryer2_bing.gif.
The most common problem with a gas and no heat is the ignitor going bad...

Here is a tip that I wrote about that problem...

http://www.fixya.com/support/r4398592-gas_dryer_not_working_gas_dryer_not

If your dryer2_bing.gif is electric2_bing.gif..
There could be a number of different problems...
Check out this tip that I wrote about this problem...


http://www.fixya.com/support/r3866345-dryer_troubleshooting_electric_dryer_won

heatman101

Posted on Apr 28, 2010

hunter19_46m
  • 7482 Answers

SOURCE: My Bosch Exxcel dryer does not heat up, the drum

Could be either the heating element or the thermostat/s.

ALWAYS UNPLUG YOUR DRYER BEFORE ATTEMPTING TO DO ANY WORK ON IT.
Check to make sure you are getting full 220 Volt power to the dryer, if you are then:
Check your Wiring
Often the main wiring connection from the house, at the dryer, burns and the connection breaks. In this has happened to your dryer, you need to replace the power cord and the terminal block inside the dryer to which the wire is attached.
Check the Door Switch
If the door switch or the door-switch actuator is defective, the dryer won't work and you need to replace the failed component. The switch is inside the dryer main housing near the door frame. Sometimes you need to raise or open the top or front of the dryer to reach the switch. Check for continuity you should have none with door open, and should have a reading when closed. If not replace the door switch.
Check to make sure you heating problem is not a lint build up in the discharge hose or the dryer,as this condition can cause heater/thermistor problems such as overheating of the heating coil leading to failure of the coil and burnout of the thermostat/thermistor due to overheat.
Sounds like your problem may be with the heating coil. Remove the back/or front just under the door of the machine and try to locate the air duct going from the blower to the drum. Normally inside/outside the air duct you will find the heating coil and the thermostats/thermistors. Once you have located the heating coil, remove the two wires from it and check the coil with an ohm meter across the two terminals of the coil.
You should read continuity across the terminals, if not you will need to replace the coil as it is faulty.
If the heating coil is ok, then:
You can check the thermostat/thermistor one at a time by removing the two wires and taping them together with electrical tape or with an ohm meter to test the thermostat/thermistor. (Should have/show continuity)
If the coil heats up then replace the thermostat/thermistor.
(Thermal fuse.If it overheats the dryer will not operate. It's located on the blower housing. It cannot be reset. A vent clogged with lint can cause it to overheat. You can test it with an Ohm meter or continuity checker, if no continuity, replace it)
DO NOT LEAVE THE WIRES TAPED TOGETHER AFTER THE TEST.
This could cause a FIRE, as you have removed the safety of overheat from the machine.
Right after replacing a dryer element, always run the dryer on 'air fluff' / 'no heat', and go outside to verify there's plenty of air coming out your vent system.
If the vent's clogged, that new element can burn out very quickly.
This is a FREE answer, Please rate me

Posted on Oct 05, 2010

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1 Answer

Bosch dryer will not heat


If you have a Tumble Dryer that is not heating up but the drum is turning ok, then the chances are the thermal overload cutout has tripped. Bosch dryers have a reset button but you will have to remove the heater cover panel to access it, you will find it just above the heating element (a black stat with small red button) simply press the red button and if it clicks you've fixed it.
It also may be:
If the dryer doesn't heat, but the drum turns, check the thermal fuse(s). The thermal fuse protects the dryer from overheating and helps to prevent fires. If the thermal fuse is blown, it will have to be replaced

Dec 13, 2013 | Bosch Nexxt 800 Dryer

1 Answer

My Bosch Dryer Model nexxt WTMC3300 will not run. The Start switch indicating light turns on and blinks as it should. The lint light flashes a few times then goes out. But when I push the start switch,...


The motor tripped..The wiring diagram for the dryer is inside the back cover tie-wrapped to the frame as it sounds like the motor has a trip on it:
To reset the switch unplug the dryer, remove the power cable and back cover completely. two screws holding back cover are under the top cover which is held on with two screws at the rear. Remove the screws then pull top cover back and then lift it off. Remove last two screws and take off the full back cover . On the front of the motor you should see two white wires going into the safety switch for the belt breaking. Push the button on the left to reset the switch (you probably will hear a click) Do not push the right button as that is what got tripped originally . Good Luck Tim

May 01, 2011 | Bosch Nexxt WTMC 3300 Electric Dryer

1 Answer

I have a Bosch nextt 500 series dryer and after 2 years of use the problem I have is the heat will shut off and the dryer will keep running and I have to press the reset button on the backside of the dryer


Open the front panel, remove heat exchanger and clean. also clean out lint tray. this might help a little. Now lets check if the thermal sensor or heating element needs to be replaced.
Unplug the dryer. remove the panel in the back of the dryer that covers the heating element. ( the inner panel). On top of the heating element you will see a thermal sensor with a small red button on it. Thats the manual reset button. To test if the heating element is working properly you can disconnect the wires from the sensor and clip the connectors together . Plug the dryer back in and start it. pay attention to the heating element. It should begin to glow shortly. if it doesn't then your heating element is bad and needs to be replaced.

Unplug the dryer. Connect the wires back to the thermal sensor. Plug the dryer back in. Before you start the dryer, press the red button on the thermal sensor. Start the dryer. If the heating element doesn't come on and dryer doesn't heat, then you need to replace that sensor.

Feb 01, 2011 | Bosch Axxis WTL 5410 Electric Dryer

2 Answers

My bosch nexxt wtmc3300 dryer won't start.... cleaned the lint filter, took the back off and vacuumed it out, everything is lightimg up but when i hit the start button, nothing.... please help, getting...


Hello, Welcome to FixYa.

There are a couple of scenarios which may prevent the dryer from starting with Bosch, but with the most common there are two thermostat's/switches
which could be reset, plus a no reset hi-limit ( on the lint housing )... i.e. macmarkus_15.jpg ...which cannot be reset, but the hi-limit is the one related to heating...located on the heater housing and the other (emergency shut off/belt switch) is by the motor shown below.
Anyway,

To save time and back and forth dialog, I`ll mention the most likely and what to do about it.

**Unplug the dryer before attempting any repair tips suggested here please...safety first**

There is an auto shut off or emergency kill switch next to the motor I alluded to which will prevent it to start in the event it was tripped for whatever reason.
This is the most likely scenario in my opinion based on your post...but again it depends on your model.
This will require you to remove the back panel again though. Once you've remove the rear panel, It will look like this image below and all you need to do is push it to the right ( from the back )...

i.e.

macmarkus_14.jpg
Since you`ve already taken the back of the dryer off before to gain access you should have no problem.

Either Scenario I alluded to will require the removal of that panel so let me know if you require further assistance to do this.

The other would be resetting the hi-limit cut out, You can see through the back vent opening when the vent tube is removed ( cannot be removed without removing rear panel the first time, but if attached a certain way can be done each time after ) and then by pushing the red button in...shown below.

i.e.


923283f.jpg

Keep me posted how you make out or if anything is not clear or if your model is completely different...some have line fuses at the back.


Thanks for choosing FixYa and good luck.

Regards,

Macmarkus :)

Jan 28, 2011 | Bosch Nexxt WTMC 3300 Electric Dryer

1 Answer

Bosch dryer wtmc3300 was overheating and now wont start up. Only makes a clicking noise. The time indicator lights up and thats it.


The motor tripped..The wiring diagram for the dryer is inside the back cover tie-wrapped to the frame as it sounds like the motor has a trip on it:
To reset the switch unplug the dryer, remove the power cable and back cover completely. two screws holding back cover are under the top cover which is held on with two screws at the rear. Remove the screws then pull top cover back and then lift it off. Remove last two screws and take off the full back cover . On the front of the motor you should see two white wires going into the safety switch for the belt breaking. Push the button on the left to reset the switch (you probably will hear a click) Do not push the right button as that is what got tripped originally . Good Luck Tim

Dec 01, 2010 | Bosch Nexxt WTMC 3300 Electric Dryer

1 Answer

I have a Bosch WTL5410 dryer, which has no heat going to the otherwise functioning tumbler. Do you know where I could purchase another heating element and where I can get instructions regarding the...


Open front panel, remove heat exchanger and clean.
Unplug the dryer. remove the panel in the back of the dryer that covers the heating element. ( the inner panel). On top of the heating element you will see a thermal sensor with a small red button on it. Thats the manual reset button To test if the heating element is working properly you can disconnect the wires from the sensor and clip the connectors together . Plug the dryer back in and start it. pay attention to the heating element. It should begin to glow shortly. if it doesn't then your heating element is bad and needs to be replaced.

Unplug the dryer. Connect the wires back to the thermal sensor. Plug the dryer back in. Before you start the dryer, press the red button on the switch. This is your reset button. Start the dryer. If the heating element doesn't come on and dryer doesn't heat, then you need to replace that sensor.

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1 Answer

Bosch Nexxt Electric dryer tumbling but not heating up at all, I here rumors of a reset switch. Where is it located?


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The reset button needs to be replaced.  Once it has tripped, it loses it's setting and will trip at a much lower temperature.  This is a standard procedure that LG is telling all their techs to do.

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I just had the same problem, motor runs but no heat. I had a fun time figuring out how take the front panel off, hint the rubber seal comes off easily. It looks like mine tripped the resettable over heat sensor. So far so good.

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