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My dryer runs but not hot air

My dryer runs and blows air but dose not have heat. I replaced the heating element it is showing 115 volt on each sid of the element

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Try removing and clean out the vent tubing. Any restriction of lint will cause the no heat problem courtesy of the moister sensor regulated by the US Government. It is a saftey device to prevent fires in the home caused by dirty clogged up lint build up in dryers exhaust vents

Posted on Jul 08, 2010

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What's wrong we have a Bosch Nexxt 800 Series Electric Dryer, It runs but won't blow hot air?


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,

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 !!!!

Sep 30, 2014 | Dryers

1 Answer

Kenmore 300 dryer runs but does not heat


With the dryer off, use a volt/ohm meter and see if the heating element has resistance. If there is infinite resistance the element is bad. If the element tests OK, check the thermisters. They are usually button shaped parts that shut off the heat if it gets too hot. These and fuses need to be replaced if they have infinite resistance. Generally, these blow when you have lint build-up and the air can't flow.

Sep 02, 2014 | Kenmore Dryers

1 Answer

Why is my 80 series dryer not blowing hot air?


GOD IS STILL GOOD !!!!

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,

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.html

Sep 01, 2014 | Dryers

1 Answer

The dryer works but there is no hot air. How can I tell if it is the heating unit or the heating sensor that is bad? Amana NDE7800AY


Ohm the heating element for continuity
There is a thermal cutoff at the top of the element case with 2 wires
Hook these two wires together for a check or ohm it for continuity. . The dryer should run. unless it is a more tech problem.Also check for 230 volt at the wall and at the service cord at the dryer. A dryer will run on 115 but it will not heat.
for more questions.
Leo Ponder
imufo2@sbcglobal.net

Jul 31, 2010 | Amana NDE7800AY Electric Dryer

1 Answer

Dryer runs...timer wont rotate and wont heat up


Good day,
Timer woun't run if there is n heat.
1. Check to see you are getting 230 volts to the machine. The motor uses only 115 so is not a good indication.
2. Remove back cover. You will need an ohm meter to test the components.
A. In the center bottom is a skinny white bakelite device held on with one screw. Remove one wire and check. It should check zero ohms. If not replace.
B. On the bottom right is a canister with the heating element terminals sticking out. They should test at 30 or less ohms. If not replace the heating element.
C. There are about 3 other limit thermostats in the area you're working. They should all check at zero ohms. Replace as needed.

Below is a tutorial on changing a heating element.

http://www.applianceaid.com/wp_element.html

Mar 02, 2010 | Whirlpool Dryers

1 Answer

My frigid air dryer turns on and tumbles but will not heat up. We are doing renos and the duct(ing) is not connected to the dryer vent. Is that the cause? thanks.


No probably not the reason for not heating, what comes to mind first is check for proper 220/240 voltage is getting to the dryer, a dryer will run and seem to operate normally evn with getting only 110/115 volts but that is not enough power to energize the heating element to heat the air blowing into the dryer,or you may have a failed dryer heating element. Good luck !

Nov 30, 2009 | Frigidaire Gallery Series GLHS269ZDB 36"...

1 Answer

Dryer blowing cold


Check the following to address this issue.


Heating element
A burned out heating element will show no continuity when measured with a meter. Replace the element if found defective.

A heating element might only be partially burned out, in which case it would still work but will take longer time to dry the clothes. Replace the element if found defective.


Thermal fuse
Most dryers have a thermal fuse, which burns out when the dryer overheats, in which case the dryer will either not run at all or stop heating. The fuse is usually located on the vent duct, inside the dryer. A blown fuse will show no continuity when measured with a meter. Before replacing the fuse, make sure the blower wheel is not broken or clogged, and there is nothing blocking the venting.

Please rate and have a great day:)

Jun 01, 2009 | Hoover Dryers

1 Answer

Motor does not turn


if coils is heating are you sure motor isn't running or just the drum not turning ? if drum not turning suspect belt ..if motor not running but element still heating suspect element is contacting outer case ..with coil touching case 110 volts is present even without motor turning if timer is turned to heat position element will not heat to capacity but will get hot enough to eventually blow element fuse

Dec 19, 2008 | Dryers

1 Answer

Dryer won't heat


It could be a defective thermostat or heating element(In most of the cases it is the heating element).Open the service panel and check with a multi-meter for 115/220V on the heating element tags. If you can read 115/220V on its tags, it should be replaced. In case you can't read 115/220v on its tags, you should replace the thermostat. Good luck!

Sep 02, 2007 | Frigidaire FEQ1442ES Electric Dryer

4 Answers

Dryer does not get hot


pleas4e help my dryer is working but it won't get hot it just blows cold air please help me fix this problem

Jul 20, 2007 | LG DLE0332 Gas Dryer

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