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Dryer heater not working

On drying cycle drum rotates, fan blower works but blows cold air only.

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  • Hoover Master
  • 19,396 Answers

If it is an electric heater that means that either the heating element, or the thermistor , or the cirrcuit breaker connecting the element must be replaced.

You find diagrams and replacement parts here, just enter the model number.

See also following suggestions from repairclinic :
There's no heat.


How Dryers work

Find a part for your Dryer




Posted on Oct 12, 2008

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Dryer won't heat on all cycles on timer



ELECTRIC Dryer no heat or little heat, or shuts down to fast:

Check your venting and lint basket. Check blower for lint build up and blower wheel obstruction., test by trying to turn the wheel manually by hand (should be easy) May have to remove cabinet or front/back plate to get to it)

Next check the heating element itself with a meter for continuity OHMS CLOSED CIRCUIT. If not its defective or has a short if its grounding out? Which in turns causes blown fuses or thermostats or
overheating.

The heating elements are located inside the heater ducts. If you think a heating element is faulty, test it with avolt-ohm-multimeter (VOM)set to the RX1 scale. Disconnect the leads from the power terminals and clip one probe of the VOM to each terminal. The meter should read about 12 ohms. If the reading is higher ohms, the heater is faulty and should be replaced. Replace a faulty heater with a new one of the same type and electrical rating. A heater connected to a 115-volt line usually has an 8.4-ohm resistance; a heater connected to a 220-volt line usually has 11 ohms resistance.


Check dryer Terminal block prongs both outside prongs should give combined 220, and 110 each if u check 1 outside & 1 center (ground) prong. Also check house electrical outlet for full voltage. 220 because if u only get half or 110 volts you will be able to run the machine which uses only 110 to run motor but not the heater which uses a full 220,

OR you may have a broken centrifugal switch in the motor because this switch activates the motor and the heater as well. supposed to be if the motor does not run , the heater should not heat in order not to create fire but if the motor is not running, and the heater is still heating, then there could be a problem with the motor centrifugal switch that is connected to this interlock switch that should trigger the heater.

Check the thermal cut off, the cycling and the hi limit thermostats.
For continuity or OHMS. If no ohms or resistance they need replacement.

In some dryer's the control panel relies on a thermistor rather than a CYCLING thermostat to regulate the drum's air temperature by monitoring the component's resistance changes; resistance goes down as temperature increases and up when temperature decreases. Once the drum's air temperature reaches a certain level required to dry clothes, the control panel shuts off the heater. The panel will turn the heater on again and begin another heating cycle when the thermistor indicates that more heat is needed to keep the air temperature constant inside the drum 9 this is why in some cases the dryer will operate at lower cycles like gentle or low heat but not at higher settings?)

Lastly check your moister sensor. ( located inside the dryer door usually) Especially if machine seems to shut down early and clothes are still wet.
Test with a meter at room temperature and it should show continuity.
A failed moisture sensor will affect the dryer run time in the automatic moisture sensing cycle but it will not affect the heating of the dryer or the timed cycle. Which are reflected by the thermostats.

Read more :

http://www.ehow.com/info_12203962_check-dryer-thermistor.

GOD IS So GOOD !!!! AND THAT'S WHY MY ADVICE IS FREE





Dryer venting issues slow drying, fire flare ups, to hot, noise and clothes ripping etc

A lint filter that is full of lint will restrict airflow and lengthen dry times.
A blower wheel that is not firmly attached to the drive motor can slip and therefore not move air fast enough to properly dry clothes or even reduce airflow to the point where the high limit thermostat may trip and turn off the heat circuit.
In gas dryers, defective gas valve coils can create a symptom of taking too long to dry if they are intermittent. Check for proper flame ignition for the complete dry cycle to determine if this may be the cause.

The drum seals are used to prevent excess air from entering the dryer drum and act as a cushion between the drum and the front and rear bulkheads. The drum seals are made up of a felt like material. If the seal is torn or is worn then clothing can become stuck in the gap when the drum is turning. This can produce a scraping or thumping noise and the clothes can also be ripped and/or have black marks on them.
DOOR SEAL When the door is closed in gas and electric dryers the door seal helps to keep cooler air from entering the drum.

The vent tube or line itself. If it is kinked, smashed, to long, or filled, clogged with lint build up it can not only cause slow dry times but create a fire safety hazard. Try to stay away from using plastic or flimsy cellophane venting, aluminum is best!

To provide better air flow and heat dissipation try the following
Note the length of your dryer vent is a determining factor in how efficient your dryer will perform. If the total length of your pipe exceeds 25 feet then your dryer simply won't be able to perform as should, especially if your pipe runs vertically and through the roof. This is where a booster fan is sometimes needed. Booster Fans provide the extra push of air to exhaust the moisture and lint to the outside. These fans operate only when the dryer is activated, this is done by sensing the air flow through the pipe by a pressure switch mechanism or an electrical sensing relay which in turn activates the booster fan blower. I personally try to avoid adding booster fans simply because they are usually placed in a crawl space or attic and are therefore "Out of sight and out of mind." What I mean is... the unit could malfunction and you would never be aware of it. The result would be a restriction in the pipe which would cause a build up of lint at the fan. In addition, it's recommended that lint traps be placed before the fan itself which has to be cleaned out frequently. These can also easily be overlooked.








http://www.ehow.com/info_12203962_check-dryer-thermistor
How to Check Dryer Thermistor eHow

Nov 10, 2016 | Dryers

1 Answer

My Kenmore dryer 402-89032010 works but not heating. Is there a reset button?


ELECTRIC Dryer no heat or little heat, or shuts down to fast:

Check your venting and lint basket. Check blower for lint build up and blower wheel obstruction., test by trying to turn the wheel manually by hand (should be easy) May have to remove cabinet or front/back plate to get to it)

Next check the heating element itself with a meter for continuity OHMS CLOSED CIRCUIT. If not its defective or has a short if its grounding out? Which in turns causes blown fuses or thermostats or
overheating.

The heating elements are located inside the heater ducts. If you think a heating element is faulty, test it with avolt-ohm-multimeter (VOM)set to the RX1 scale. Disconnect the leads from the power terminals and clip one probe of the VOM to each terminal. The meter should read about 12 ohms. If the reading is higher ohms, the heater is faulty and should be replaced. Replace a faulty heater with a new one of the same type and electrical rating. A heater connected to a 115-volt line usually has an 8.4-ohm resistance; a heater connected to a 220-volt line usually has 11 ohms resistance.


Check dryer Terminal block prongs both outside prongs should give combined 220, and 110 each if u check 1 outside & 1 center (ground) prong. Also check house electrical outlet for full voltage. 220 because if u only get half or 110 volts you will be able to run the machine which uses only 110 to run motor but not the heater which uses a full 220,

OR you may have a broken centrifugal switch in the motor because this switch activates the motor and the heater as well. supposed to be if the motor does not run , the heater should not heat in order not to create fire but if the motor is not running, and the heater is still heating, then there could be a problem with the motor centrifugal switch that is connected to this interlock switch that should trigger the heater.

Check the thermal cut off, the cycling and the hi limit thermostats.
For continuity or OHMS. If no ohms or resistance they need replacement.

In some dryer's the control panel relies on a thermistor rather than a CYCLING thermostat to regulate the drum's air temperature by monitoring the component's resistance changes; resistance goes down as temperature increases and up when temperature decreases. Once the drum's air temperature reaches a certain level required to dry clothes, the control panel shuts off the heater. The panel will turn the heater on again and begin another heating cycle when the thermistor indicates that more heat is needed to keep the air temperature constant inside the drum 9 this is why in some cases the dryer will operate at lower cycles like gentle or low heat but not at higher settings?)

Lastly check your moister sensor. ( located inside the dryer door usually) Especially if machine seems to shut down early and clothes are still wet.
Test with a meter at room temperature and it should show continuity.
A failed moisture sensor will affect the dryer run time in the automatic moisture sensing cycle but it will not affect the heating of the dryer or the timed cycle. Which are reflected by the thermostats.

Read more :

https://www.youtube.com/watch?v=wVTBrGMql7g

http://www.ehow.com/info_12203962_check-dryer-thermistor.

GOD IS So GOOD !!!! AND THAT'S WHY MY ADVICE IS FREE


Dryer venting issues slow drying, fire flare ups, to hot, noise and clothes ripping etc

A lint filter that is full of lint will restrict airflow and lengthen dry times.
A blower wheel that is not firmly attached to the drive motor can slip and therefore not move air fast enough to properly dry clothes or even reduce airflow to the point where the high limit thermostat may trip and turn off the heat circuit.
In gas dryers, defective gas valve coils can create a symptom of taking too long to dry if they are intermittent. Check for proper flame ignition for the complete dry cycle to determine if this may be the cause.

The drum seals are used to prevent excess air from entering the dryer drum and act as a cushion between the drum and the front and rear bulkheads. The drum seals are made up of a felt like material. If the seal is torn or is worn then clothing can become stuck in the gap when the drum is turning. This can produce a scraping or thumping noise and the clothes can also be ripped and/or have black marks on them.
DOOR SEAL When the door is closed in gas and electric dryers the door seal helps to keep cooler air from entering the drum.

The vent tube or line itself. If it is kinked, smashed, to long, or filled, clogged with lint build up it can not only cause slow dry times but create a fire safety hazard. Try to stay away from using plastic or flimsy cellophane venting, aluminum is best!

To provide better air flow and heat dissipation try the following
Note the length of your dryer vent is a determining factor in how efficient your dryer will perform. If the total length of your pipe exceeds 25 feet then your dryer simply won't be able to perform as should, especially if your pipe runs vertically and through the roof. This is where a booster fan is sometimes needed. Booster Fans provide the extra push of air to exhaust the moisture and lint to the outside. These fans operate only when the dryer is activated, this is done by sensing the air flow through the pipe by a pressure switch mechanism or an electrical sensing relay which in turn activates the booster fan blower. I personally try to avoid adding booster fans simply because they are usually placed in a crawl space or attic and are therefore "Out of sight and out of mind." What I mean is... the unit could malfunction and you would never be aware of it. The result would be a restriction in the pipe which would cause a build up of lint at the fan. In addition, it's recommended that lint traps be placed before the fan itself which has to be cleaned out frequently. These can also easily be overlooked.




Kenmore Electric Dryer Not Heating What to Test and How to Test How to Check Dryer Thermistor eHow Kenmore Electric Dryer Not Heating What to Test and How to Test

Jan 04, 2016 | Kenmore Dryers

2 Answers

I have a candy smart CMD 146 the machine works fine when washing but when it comes to drying the drum spins but there is no heat to dry the clothes.. Any idea as to what the problem could be?


ELECTRIC Dryer no heat or little heat, or shuts down to fast:

Check your venting and lint basket. Check blower for lint build up and blower wheel obstruction., test by trying to turn the wheel manually by hand (should be easy) May have to remove cabinet or front/back plate to get to it)

Next check the heating element itself with a meter for continuity OHMS CLOSED CIRCUIT. If not its defective or has a short if its grounding out? Which in turns causes blown fuses or thermostats or
overheating.

The heating elements are located inside the heater ducts. If you think a heating element is faulty, test it with avolt-ohm-multimeter (VOM)set to the RX1 scale. Disconnect the leads from the power terminals and clip one probe of the VOM to each terminal. The meter should read about 12 ohms. If the reading is higher ohms, the heater is faulty and should be replaced. Replace a faulty heater with a new one of the same type and electrical rating. A heater connected to a 115-volt line usually has an 8.4-ohm resistance; a heater connected to a 220-volt line usually has 11 ohms resistance.


Check dryer Terminal block prongs both outside prongs should give combined 220, and 110 each if u check 1 outside & 1 center (ground) prong. Also check house electrical outlet for full voltage. 220 because if u only get half or 110 volts you will be able to run the machine which uses only 110 to run motor but not the heater which uses a full 220,

OR you may have a broken centrifugal switch in the motor because this switch activates the motor and the heater as well. supposed to be if the motor does not run , the heater should not heat in order not to create fire but you said that even the motor is not running, the heater is still heating, then there could be a problem with the motor centrifugal switch that is connected to this interlock switch that should trigger the heater.

Check the thermal cut off, the cycling and the hi limit thermostats.
For continuity or OHMS. If no ohms or resistance they need replacement.

In some dryer's the control panel relies on a thermistor rather than a CYCLING thermostat to regulate the drum's air temperature by monitoring the component's resistance changes; resistance goes down as temperature increases and up when temperature decreases. Once the drum's air temperature reaches a certain level required to dry clothes, the control panel shuts off the heater. The panel will turn the heater on again and begin another heating cycle when the thermistor indicates that more heat is needed to keep the air temperature constant inside the drum

Lastly check your moister sensor. ( located inside the dryer door usually) Especially if machine seems to shut down early and clothes are still wet.
Test with a meter at room temperature and it should show continuity.
A failed moisture sensor will affect the dryer run time in the automatic moisture sensing cycle but it will not affect the heating of the dryer or the timed cycle. Which are reflected by the thermostats.

Read more :http://www.ehow.com/info_12203962_check-dryer-thermistor.htmlGOD IS So GOOD !!!! AND THAT'S WHY MY ADVICE IS FREE

Dryer venting issues slow drying, fire flare ups, to hot, noise and clothes ripping etc

A lint filter that is full of lint will restrict airflow and lengthen dry times.
A blower wheel that is not firmly attached to the drive motor can slip and therefore not move air fast enough to properly dry clothes or even reduce airflow to the point where the high limit thermostat may trip and turn off the heat circuit.
In gas dryers, defective gas valve coils can create a symptom of taking too long to dry if they are intermittent. Check for proper flame ignition for the complete dry cycle to determine if this may be the cause.

The drum seals are used to prevent excess air from entering the dryer drum and act as a cushion between the drum and the front and rear bulkheads. The drum seals are made up of a felt like material. If the seal is torn or is worn then clothing can become stuck in the gap when the drum is turning. This can produce a scraping or thumping noise and the clothes can also be ripped and/or have black marks on them.
DOOR SEAL When the door is closed in gas and electric dryers the door seal helps to keep cooler air from entering the drum.

The vent tube or line itself. If it is kinked, smashed, to long, or filled, clogged with lint build up it can not only cause slow dry times but create a fire safety hazard. Try to stay away from using plastic or flimsy cellophane venting, aluminum is best!

To provide better air flow and heat dissipation try the following
Note the length of your dryer vent is a determining factor in how efficient your dryer will perform. If the total length of your pipe exceeds 25 feet then your dryer simply won't be able to perform as should, especially if your pipe runs vertically and through the roof. This is where a booster fan is sometimes needed. Booster Fans provide the extra push of air to exhaust the moisture and lint to the outside. These fans operate only when the dryer is activated, this is done by sensing the air flow through the pipe by a pressure switch mechanism or an electrical sensing relay which in turn activates the booster fan blower. I personally try to avoid adding booster fans simply because they are usually placed in a crawl space or attic and are therefore "Out of sight and out of mind." What I mean is... the unit could malfunction and you would never be aware of it. The result would be a restriction in the pipe which would cause a build up of lint at the fan. In addition, it's recommended that lint traps be placed before the fan itself which has to be cleaned out frequently. These can also easily be overlooked.











candy-smart-cmd-146-machine-works-fine-dn3wi03dqy3vjnwbm4uf5us1-3-0.jpg

candy-smart-cmd-146-machine-works-fine-dn3wi03dqy3vjnwbm4uf5us1-3-2.jpg

candy-smart-cmd-146-machine-works-fine-dn3wi03dqy3vjnwbm4uf5us1-3-5.jpg

candy-smart-cmd-146-machine-works-fine-dn3wi03dqy3vjnwbm4uf5us1-3-9.jpg

candy-smart-cmd-146-machine-works-fine-dn3wi03dqy3vjnwbm4uf5us1-3-14.jpg

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candy-smart-cmd-146-machine-works-fine-dn3wi03dqy3vjnwbm4uf5us1-3-27.jpg

Jun 10, 2015 | Candy Washing Machines

1 Answer

Hi I have a below dsc85w condenser dryer with no heat issues. Have replaced PCI, heater and front Ntc but still nothing. Dryer runs for 15 secs then rotates opposite way ?? Any ideas thank you


ELECTRIC Dryer no heat or little heat, or shuts down to fast:

Check your venting and lint basket. Check blower for lint build up and blower wheel obstruction., test by trying to turn the wheel manually by hand (should be easy) May have to remove cabinet or front/back plate to get to it)

Next check the heating element itself with a meter for continuity OHMS CLOSED CIRCUIT. If not its defective or has a short if its grounding out? Which in turns causes blown fuses or thermostats or
overheating.

The heating elements are located inside the heater ducts. If you think a heating element is faulty, test it with avolt-ohm-multimeter (VOM)set to the RX1 scale. Disconnect the leads from the power terminals and clip one probe of the VOM to each terminal. The meter should read about 12 ohms. If the reading is higher ohms, the heater is faulty and should be replaced. Replace a faulty heater with a new one of the same type and electrical rating. A heater connected to a 115-volt line usually has an 8.4-ohm resistance; a heater connected to a 220-volt line usually has 11 ohms resistance.


Check dryer Terminal block prongs both outside prongs should give combined 220, and 110 each if u check 1 outside & 1 center (ground) prong. Also check house electrical outlet for full voltage. 220 because if u only get half or 110 volts you will be able to run the machine which uses only 110 to run motor but not the heater which uses a full 220,

OR you may have a broken centrifugal switch in the motor because this switch activates the motor and the heater as well. supposed to be if the motor does not run , the heater should not heat in order not to create fire but you said that even the motor is not running, the heater is still heating, then there could be a problem with the motor centrifugal switch that is connected to this interlock switch that should trigger the heater.

Check the thermal cut off, the cycling and the hi limit thermostats.
For continuity or OHMS. If no ohms or resistance they need replacement.

In some dryer's the control panel relies on a thermistor rather than a CYCLING thermostat to regulate the drum's air temperature by monitoring the component's resistance changes; resistance goes down as temperature increases and up when temperature decreases. Once the drum's air temperature reaches a certain level required to dry clothes, the control panel shuts off the heater. The panel will turn the heater on again and begin another heating cycle when the thermistor indicates that more heat is needed to keep the air temperature constant inside the drum

Lastly check your moister sensor. ( located inside the dryer door usually) Especially if machine seems to shut down early and clothes are still wet.
Test with a meter at room temperature and it should show continuity.
A failed moisture sensor will affect the dryer run time in the automatic moisture sensing cycle but it will not affect the heating of the dryer or the timed cycle. Which are reflected by the thermostats.

Read more :http://www.ehow.com/info_12203962_check-dryer-thermistor.htmlGOD IS So GOOD !!!! AND THAT'S WHY MY ADVICE IS FREE

Dryer venting issues slow drying, fire flare ups, to hot, noise and clothes ripping etc

A lint filter that is full of lint will restrict airflow and lengthen dry times.
A blower wheel that is not firmly attached to the drive motor can slip and therefore not move air fast enough to properly dry clothes or even reduce airflow to the point where the high limit thermostat may trip and turn off the heat circuit.
In gas dryers, defective gas valve coils can create a symptom of taking too long to dry if they are intermittent. Check for proper flame ignition for the complete dry cycle to determine if this may be the cause.

The drum seals are used to prevent excess air from entering the dryer drum and act as a cushion between the drum and the front and rear bulkheads. The drum seals are made up of a felt like material. If the seal is torn or is worn then clothing can become stuck in the gap when the drum is turning. This can produce a scraping or thumping noise and the clothes can also be ripped and/or have black marks on them.
DOOR SEAL When the door is closed in gas and electric dryers the door seal helps to keep cooler air from entering the drum.

The vent tube or line itself. If it is kinked, smashed, to long, or filled, clogged with lint build up it can not only cause slow dry times but create a fire safety hazard. Try to stay away from using plastic or flimsy cellophane venting, aluminum is best!

To provide better air flow and heat dissipation try the following
Note the length of your dryer vent is a determining factor in how efficient your dryer will perform. If the total length of your pipe exceeds 25 feet then your dryer simply won't be able to perform as should, especially if your pipe runs vertically and through the roof. This is where a booster fan is sometimes needed. Booster Fans provide the extra push of air to exhaust the moisture and lint to the outside. These fans operate only when the dryer is activated, this is done by sensing the air flow through the pipe by a pressure switch mechanism or an electrical sensing relay which in turn activates the booster fan blower. I personally try to avoid adding booster fans simply because they are usually placed in a crawl space or attic and are therefore "Out of sight and out of mind." What I mean is... the unit could malfunction and you would never be aware of it. The result would be a restriction in the pipe which would cause a build up of lint at the fan. In addition, it's recommended that lint traps be placed before the fan itself which has to be cleaned out frequently. These can also easily be overlooked.
How to Check Dryer Thermistor eHow


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25691461-hed3japwagud3imxwy3n1koj-1-5.jpg

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May 11, 2015 | Dryers

1 Answer

My new Beko dw686 does not dry on the programmes it is meant to .... I don't know if the turbo fan is working


DO U MEAN THERE IS NO HEAT?

ELECTRIC Dryer no heat or little heat, or shuts down to fast:

Check your venting and lint basket. Check blower for lint build up and blower wheel obstruction., test by trying to turn the wheel manually by hand (should be easy) May have to remove cabinet or front/back plate to get to it)

Next check the heating element itself with a meter for continuity OHMS CLOSED CIRCUIT. If not its defective or has a short if its grounding out? Which in turns causes blown fuses or thermostats or
overheating.

The heating elements are located inside the heater ducts. If you think a heating element is faulty, test it with avolt-ohm-multimeter (VOM)set to the RX1 scale. Disconnect the leads from the power terminals and clip one probe of the VOM to each terminal. The meter should read about 12 ohms. If the reading is higher ohms, the heater is faulty and should be replaced. Replace a faulty heater with a new one of the same type and electrical rating. A heater connected to a 115-volt line usually has an 8.4-ohm resistance; a heater connected to a 220-volt line usually has 11 ohms resistance.


Check dryer Terminal block prongs both outside prongs should give combined 220, and 110 each if u check 1 outside & 1 center (ground) prong. Also check house electrical outlet for full voltage. 220 because if u only get half or 110 volts you will be able to run the machine which uses only 110 to run motor but not the heater which uses a full 220,

OR you may have a broken centrifugal switch in the motor because this switch activates the motor and the heater as well. supposed to be if the motor does not run , the heater should not heat in order not to create fire but you said that even the motor is not running, the heater is still heating, then there could be a problem with the motor centrifugal switch that is connected to this interlock switch that should trigger the heater.

Check the thermal cut off, the cycling and the hi limit thermostats.
For continuity or OHMS. If no ohms or resistance they need replacement.

In some dryer's the control panel relies on a thermistor rather than a CYCLING thermostat to regulate the drum's air temperature by monitoring the component's resistance changes; resistance goes down as temperature increases and up when temperature decreases. Once the drum's air temperature reaches a certain level required to dry clothes, the control panel shuts off the heater. The panel will turn the heater on again and begin another heating cycle when the thermistor indicates that more heat is needed to keep the air temperature constant inside the drum

Lastly check your moister sensor. ( located inside the dryer door usually) Especially if machine seems to shut down early and clothes are still wet.
Test with a meter at room temperature and it should show continuity.
A failed moisture sensor will affect the dryer run time in the automatic moisture sensing cycle but it will not affect the heating of the dryer or the timed cycle. Which are reflected by the thermostats.

Read more :http://www.ehow.com/info_12203962_check-dryer-thermistor.htmlGOD IS So GOOD !!!! AND THAT'S WHY MY ADVICE IS FREE

Dryer venting issues slow drying, fire flare ups, to hot, noise and clothes ripping etc

A lint filter that is full of lint will restrict airflow and lengthen dry times.
A blower wheel that is not firmly attached to the drive motor can slip and therefore not move air fast enough to properly dry clothes or even reduce airflow to the point where the high limit thermostat may trip and turn off the heat circuit.
In gas dryers, defective gas valve coils can create a symptom of taking too long to dry if they are intermittent. Check for proper flame ignition for the complete dry cycle to determine if this may be the cause.

The drum seals are used to prevent excess air from entering the dryer drum and act as a cushion between the drum and the front and rear bulkheads. The drum seals are made up of a felt like material. If the seal is torn or is worn then clothing can become stuck in the gap when the drum is turning. This can produce a scraping or thumping noise and the clothes can also be ripped and/or have black marks on them.
DOOR SEAL When the door is closed in gas and electric dryers the door seal helps to keep cooler air from entering the drum.

The vent tube or line itself. If it is kinked, smashed, to long, or filled, clogged with lint build up it can not only cause slow dry times but create a fire safety hazard. Try to stay away from using plastic or flimsy cellophane venting, aluminum is best!

To provide better air flow and heat dissipation try the following
Note the length of your dryer vent is a determining factor in how efficient your dryer will perform. If the total length of your pipe exceeds 25 feet then your dryer simply won't be able to perform as should, especially if your pipe runs vertically and through the roof. This is where a booster fan is sometimes needed. Booster Fans provide the extra push of air to exhaust the moisture and lint to the outside. These fans operate only when the dryer is activated, this is done by sensing the air flow through the pipe by a pressure switch mechanism or an electrical sensing relay which in turn activates the booster fan blower. I personally try to avoid adding booster fans simply because they are usually placed in a crawl space or attic and are therefore "Out of sight and out of mind." What I mean is... the unit could malfunction and you would never be aware of it. The result would be a restriction in the pipe which would cause a build up of lint at the fan. In addition, it's recommended that lint traps be placed before the fan itself which has to be cleaned out frequently. These can also easily be overlooked.







How to Check Dryer Thermistor eHow
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Mar 03, 2015 | Beko Dishwashers

1 Answer

Heats but takes long to dry clothes. Vent is clear


ELECTRIC Dryer no heat or little heat, or shuts down to fast:

Check your venting and lint basket. Check blower for lint build up and blower wheel obstruction., test by trying to turn the wheel manually by hand (should be easy) May have to remove cabinet or front/back plate to get to it)

Next check the heating element itself with a meter for continuity OHMS CLOSED CIRCUIT. If not its defective or has a short if its grounding out? Which in turns causes blown fuses or thermostats or
overheating.

The heating elements are located inside the heater ducts. If you think a heating element is faulty, test it with avolt-ohm-multimeter (VOM)set to the RX1 scale. Disconnect the leads from the power terminals and clip one probe of the VOM to each terminal. The meter should read about 12 ohms. If the reading is higher ohms, the heater is faulty and should be replaced. Replace a faulty heater with a new one of the same type and electrical rating. A heater connected to a 115-volt line usually has an 8.4-ohm resistance; a heater connected to a 220-volt line usually has 11 ohms resistance.


Check dryer Terminal block prongs both outside prongs should give combined 220, and 110 each if u check 1 outside & 1 center (ground) prong. Also check house electrical outlet for full voltage. 220 because if u only get half or 110 volts you will be able to run the machine which uses only 110 to run motor but not the heater which uses a full 220,

OR you may have a broken centrifugal switch in the motor because this switch activates the motor and the heater as well. supposed to be if the motor does not run , the heater should not heat in order not to create fire but you said that even the motor is not running, the heater is still heating, then there could be a problem with the motor centrifugal switch that is connected to this interlock switch that should trigger the heater.

Check the thermal cut off, the cycling and the hi limit thermostats.
For continuity or OHMS. If no ohms or resistance they need replacement.

In some dryer's the control panel relies on a thermistor rather than a CYCLING thermostat to regulate the drum's air temperature by monitoring the component's resistance changes; resistance goes down as temperature increases and up when temperature decreases. Once the drum's air temperature reaches a certain level required to dry clothes, the control panel shuts off the heater. The panel will turn the heater on again and begin another heating cycle when the thermistor indicates that more heat is needed to keep the air temperature constant inside the drum

Lastly check your moister sensor. ( located inside the dryer door usually) Especially if machine seems to shut down early and clothes are still wet.
Test with a meter at room temperature and it should show continuity.
A failed moisture sensor will affect the dryer run time in the automatic moisture sensing cycle but it will not affect the heating of the dryer or the timed cycle. Which are reflected by the thermostats.

Read more :http://www.ehow.com/info_12203962_check-dryer-thermistor.htmlGOD IS So GOOD !!!! AND THAT'S WHY MY ADVICE IS FREE

Dryer venting issues slow drying, fire flare ups, to hot, noise and clothes ripping etc

A lint filter that is full of lint will restrict airflow and lengthen dry times.
A blower wheel that is not firmly attached to the drive motor can slip and therefore not move air fast enough to properly dry clothes or even reduce airflow to the point where the high limit thermostat may trip and turn off the heat circuit.
In gas dryers, defective gas valve coils can create a symptom of taking too long to dry if they are intermittent. Check for proper flame ignition for the complete dry cycle to determine if this may be the cause.

The drum seals are used to prevent excess air from entering the dryer drum and act as a cushion between the drum and the front and rear bulkheads. The drum seals are made up of a felt like material. If the seal is torn or is worn then clothing can become stuck in the gap when the drum is turning. This can produce a scraping or thumping noise and the clothes can also be ripped and/or have black marks on them.
DOOR SEAL When the door is closed in gas and electric dryers the door seal helps to keep cooler air from entering the drum.

The vent tube or line itself. If it is kinked, smashed, to long, or filled, clogged with lint build up it can not only cause slow dry times but create a fire safety hazard. Try to stay away from using plastic or flimsy cellophane venting, aluminum is best!

To provide better air flow and heat dissipation try the following
Note the length of your dryer vent is a determining factor in how efficient your dryer will perform. If the total length of your pipe exceeds 25 feet then your dryer simply won't be able to perform as should, especially if your pipe runs vertically and through the roof. This is where a booster fan is sometimes needed. Booster Fans provide the extra push of air to exhaust the moisture and lint to the outside. These fans operate only when the dryer is activated, this is done by sensing the air flow through the pipe by a pressure switch mechanism or an electrical sensing relay which in turn activates the booster fan blower. I personally try to avoid adding booster fans simply because they are usually placed in a crawl space or attic and are therefore "Out of sight and out of mind." What I mean is... the unit could malfunction and you would never be aware of it. The result would be a restriction in the pipe which would cause a build up of lint at the fan. In addition, it's recommended that lint traps be placed before the fan itself which has to be cleaned out frequently. These can also easily be overlooked.


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Jul 11, 2014 | Whirlpool LGR7646E Dryer

1 Answer

Heater doesnt work


To troubleshoot this types of problem,click the link below :---
Car heater blowing warm, but not hot air?http://schematicsdiagram.blogspot.com/2011/12/car-heater-blowing-warm-but-not-hot-air.html

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Engine Overheats and heater blowing cold?

http://howtobyme.blogspot.com/2011/11/engine-overheats-and-heater-blowing.html

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Heat blows cold on drivers side and hot on passenger side?

http://schematicsdiagram.blogspot.com/2011/12/heat-blows-cold-on-drivers-side-and-hot.html

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No heat on car? http://technoanswers.blogspot.in/2012/02/no-heat-on-oldsmobile-silhouette.html

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Heater blows intermittently and temp gauge goes erratic?

http://technoanswers.blogspot.com/2012/01/heater-blows-intermittently-and-temp.html

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Heater blows cold?

http://schematicsdiagram.blogspot.in/2012/02/heater-blows-cold.html

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Heater/AC blower motor not working?

http://technoanswers.blogspot.in/2012/02/heaterac-blower-motor-not-working-on.html

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A/C, heater, defroster fan, not working? http://technoanswers.blogspot.in/2012/02/ac-heater-defroster-fan-not-working.html Heater problem?

http://technoanswers.blogspot.in/2012/02/heater-problem-on-isuzu-trooper.html

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This will help.Thanks.

Mar 27, 2012 | 1994 Volvo 960

1 Answer

Drying not taking place..... inside bucket only rotates


If the drum is rotating but the clothes are not drying, you have one of these problems:

  • Blower is loose on the motor shaft
  • Exhaust is plugged with lint
  • Heater is not working.
The quick check for the first two problems is to see if air is blowing out of the exhaust. If not, find out why.

If the air is cold, check the heater. In an electric dryer, the heater element could be burned out or one of the two thermostats (primary and safety) is open at room temperature (i. e., bad thermostat). In a gas dryer, the pilot ignitor or the gas valve is not working.

Apr 23, 2011 | Daewoo Washing Machines

1 Answer

My dryer drum is rotating and the heater is working, but condensation is building up in the drum instead of dispersing. No matter how long the cycle, the clothes don't dry. I've checked the filter, vent...


Can you feel air blowing out the vent on the dryer itself? The reason I ask is if you dont feel any air blowing out your blower fan isnt working and wouldn't matter if vent was clear if you dont have any air movement.

Jan 21, 2010 | GE Profile Harmony DPGT750EC Electric...

1 Answer

Dryer drum stopped rotating, dryer blower continues to work.


The belt probably broke, and coincidentally happened while drying the shoes. The belt is easy to replace. Open the back and you'll probably see the belt laying on the bottom

Nov 10, 2009 | Bosch Axxis WTA 3510 Electric Dryer

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