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Daniel, Home Appliance Technician
Category: Appliance
Satisfied Customers: 17410
Experience:  20+ yrs. experience in white goods repair. NVQ Level 2 electronics manufacturers training courses.
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Zwd122070w1 washer dryer type01 Fan working but dryer

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zwd122070w1 washer dryer type###-##-####01
Fan working but dryer heaters not turning on. Program runs through full cycle. Checked the following:
two stats on heater box- both closed
stat at front - 6k ohms approx.
thermistor - in range 5k down to 2k at least
PCB - 12 v on Fan relay. No voltage on inputs of other 3 relays.
Customer: replied 1 year ago.
The model number is ***** not zwd122070w1.


Have you checked the lower thermistor at the back?

Remove the back panel and from there look on the left hand side and you will see a black hose going from the side of the drum to the plastic condenser unit.

In that black hose is the lower thermistor. Check the wiring there as this is very common for the wires to break in there.

Refix the wire if its broken and retry the dryer side and see what happens.

Check that and see how it goes from there and let me know.


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Customer: replied 1 year ago.
That is the thermistor I checked. is there another thermister. if so where is it?
Customer: replied 1 year ago.
Could fluff in condenser prevent heater relay from being switched on? Condenser is very inaccessible. All I managed to do was poke wire up about a foot by opening the large black hose at the bottom.