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Dryer is not drying. Lint is not collecting on

Dryer is not drying. Lint is not collecting on filter and condensation is on dryer door.

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  • TomZS May 11, 2010

    Your vent pipe going outside is clogged

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There is no lint screen that catches ALL the dryer lint. Some lint will always get exhausted through the dryer vent exhaust ducting along with the moisture from your clothing as it dries. If the exhaust vent remains unobstructed, all the air and lint will be blown out the end of the dryer vent exhaust.

However, if the air meets any resistance from kinks, excessive bends, or sags, moisture will build up inside the dryer vent exhaust causing the lint to stick to the interior walls of the vent hose. Over time this lint builds up and forms a clog. With a clog comes condensation and longer dry times. The dryer will continue to run inefficiently and cause the heating circuits to work harder and overheat. This will eventually lead to a failure of the heating circuits. If you are seeing condensation inside the dryer, it is strongly recommended the you inspect and clean the dryer exhaust vent hose. You should repeat this a couple of times a year to ensure it remains obstruction free.

The most frequent causes of dryer vent clogs comes from the following:

1. Ducting that runs in an upward direction in homes that have an attic exhaust. This is a stupid design that gravity will always win. When the dryer shuts offf, anything left in the vent will fall down the ducting to the base of the wall and accumulate. Over time, this forms a clog.

2. Ducting that runs under the home in a crawl space. If not correctly hung from the rafters, the ducting will develop sags causing choke points where lint can accumulate. Leaving it on the ground is not the answer, either. This gives opportunity for rodents to possibly chew through it. This will cause leaks which exhausts warm moist air under your home resulting in mold and mildew.

3. Using plastic dryer vent hose. This type of hose is not recommended because it kinks easily and can get crushed, causing an obstruction where lint can clog. Rodents can also chew through it easily. Pushing the dryer up against the wall and crushing the hose is a common cause. Use the semi-rigid metal type ducting that resists crushing, kinks and rodent infestation.

4. Rodents. Mice love lint. If given the access to it, they will build inside the dryer vent hose which provides a nice warm place to live with lots of bedding material. Make sure you exhaust vent on the exterior of your home is about 12 inches from the ground.

5. Exhaust vent screens. I know there are many types of exhaust vents on the market that you can purchase that have screens on them to prevent birds and rodents from entering them. The screen can actually become and obstruction, though. The smaller the opening, the more resistance the blower fan meets and lint will clog at the end of the exhaust. If you chose to use a protected exhaust vent, the ones with louvers work better. You will still need to periodically check the ensure it does not become clogged.

6. Excessively long vent hose. The rule of thumb when it comes to dryer vent ducting is: The SHORTER and STRAIGHTER the run, the BETTER. Excessively long dryer vent hoses will clog due to the fact that the blower fan is not able to push all the air and lint all the way to the exhaust.

7. Kinked, Excessively Bent, or Crushed vent hoses. If the vent has any choke points due to kinks, bends, or gets crushed behind the dryer, you will develop ponts where the exhaust vent will clog.

The following link may also help in providing some basic guidance on how to install dryer vent hose:

http://www.fixya.com/support/r389357-dryer_ducting_installation_tips

I know it may seem that I'm beating this point to death, but it is important to provide good air flow for your dryer. The number one cause of dryer failures and house fires comes from poorly maintained and poorly installed ventilation ducting.

If you have any questions, please let me know. I hope you find this information helpful.

Posted on Sep 07, 2009

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1 Answer

What does the Code C3 mean on my Asko Dryer


Here is the list for the DRYER not sure what model... guys please post MODELS!!!!!!!!!!!!!!!!!!!!!

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Failure Code Condition Check/Repair

F1 Condensate drain overfilling.
1. Check condensate reservoir pump and drain tube.

F2 Maximum drying time exceeded (3hrs) 1. Check for tripped circuit breaker or blown fuse
2. Check ductwork for lint build-up
3. Check hi-limit and cycling thermostat
4. Check heating element

F3 Thermistor fault 1. Open thermistor, replace
2. Bad wiring to thermistor

F4 Too much lint in the lint filter, front housing, or in the condenser.1. Clean lint from lint filter and/or condenser

F5 Fault in the moisture sensor · Lint covering sensor in front of housing1. Bad sensor
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Model 41798702891 Kenmore stacked washer/dryer is collecting lint inside the door and putting lint onto the clothes.


I am not much of an expert with dryers but i'll give it a stab. Should there be a filter that catches the lint so that it does not go all over the clothes? Have you got the manual. If not, see if you can find the manual online and see if there is anything mentioned about a lint filter.

Dec 14, 2013 | Kenmore 98702 Stacked Washer/Dryer

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My bosh next 700 series I not heating to dry the clothes I checked the vent and it not clogged inside and outside. Help pls


Try to reset the thermal cutoff, but should be no reason why it should have tripped.
The actual operating procedure is
The air enters the body of the dryer through the large opening in front of the dryer
Then the air is sucked past the heating element and into the tumbler. (the tumbler is the large bin holding your clothes).
Then after the air has circulated around the clothes, it enters the door and is directed down through the lint screen. (this catches lint from the drying process... some clothes producte more lint (such as towels) than others (such as panties) because the weave is more coarse.
Then the air passes through a duct in the front of the dryer (after the lint filter) and into the fan.
The fan forces the air into the duct leading out the back of the dryer, at which point it exits your house.
It is extremely difficult to tell you the problem without being there to eliminate any one of several things that could be the problem. First, when you have the dryer turned on and have the heat setting set to cottons, is there ANY heat at all? If you feel the door, and there is SOME heat but there is not much heat on the clothes when you feel them, the intake opening in front of the dryer is probably in need of cleaning.

While you should always clean your lint filter after each use of your dryer, you should also periodically clean the intake at least once every six months. If you do not, the air intake is eventually restricted and the drying efficiency of the drye is affected. Consult your owner's manual for the exact location of the air intake.

IF THE INTAKE IS CLEAN and clear of obstruction, and there is still not enough heat to dry the clothes, but the door feels warm when dryer is operating. Then this would imply that the exhaust duct needs cleaned out. This is something that definitely needs done periodically to prevent fire. The exhaust duct collects additional lint that the lint filter misses. While this is a small amount of lint, over a period of time, this builds up on the inside of the exhaust duct and prevents the flow of the exhaust which reduces the heated air flow around the clothes in the tumbler. This results in the air not flowing and not becoming warm enough to dry the clothes efficiently.

IF THERE IS NO HEAT AT ALL: Then there is a likelihood that the heater itself needs replacement. This is a costly repair and you will be wise to invest in another dryer instead.

The working process of your clothes dryer is a relatively simple machine. It brings in air, heats the air, flows the air through the tumber where the clothes tumble loosely with the heated air circulating around them, then the air passes through the lint filter as it exits out your home. The lint filter is necessary because those tiny pieces of fabric (lint) can collect in your exhaust duct and catch fire. This is the major cause of dryer fires. This is why you should also periodically clean out your exhaust duct. Even though you have a lint filter, the lint filter does NOT catch all the lint and lint will eventually coat the interior walls of the exhaust duct.

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2 Answers

My BOSCH dryer #WTE86300US keeps stopping in mid cycle and gives the signal F3 which says to check condensation outlet and I have cleaned all the parts and cleaned hose but it will still beep after a few...


I have owned the same dryer for about a year and just started having this F03 problem. The condensation drain hose is the soft flexible rubber hose coming out of the back of the dryer and it drains into the same drain as a washer. It's easy to pull the hose off its connector at the back of the dryer and just blow hard into it to make sure there's no lint clogging the hose and reconnect it to the dryer. Next open the panel on the left of the dryer and thoroughly rinse (water only, no soap) clean the two parts behind the door (first is plastic and behind that is the condensation filter which probably is loaded with lint). Sometimes the lint in the condensation filter channels (those that run from front to back) can be quite stuck. Use a long pipe cleaner to get in there or a garden hose with a spray nozzle. Shake the excess water out of the condensation filter and dry off the outsides of two parts. Clean all the lint out the compartment where the parts go. There is one more crucial step not mentioned in the manual. Once you remove the condensation filter you will see a small plastic panel on the lower wall of the condensation filter slot. Slide a flat blade screwdriver or a blunt table knife under the panel and gently pop it open. Under the panel is a small chamber that you can't see very well where you will find a slurry of lint/water which is what clogs the condensation outlet. With latex gloves reach in there and clean it out. Use paper towel to get it all out. Blow hard into the dryer through the condensation hose to clear up any last bits. Pop the panel back in place as well as the condensation filter and the plastic part. Take out the lint filter (within the dryer drum compartment) and wash it with soap and water. Use an old toothbrush or something to clean the screens thoroughly. Rinse well and dry it completely. Clean all the lint out of the empty compartment. Put all three parts back into the dryer. Clean all lint off the door. Using paper towel moistened with white vinegar clean the two metal sensors in drum compartment on the front wall and lower left. Run the dryer empty but with heat on for a few minutes to make sure all the water is drained out. Now try drying a load. I think it's a good idea to rinse clean the condensation filter at least once a month since it collects a lot of lint. Hope this works for you.

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1 Answer

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have owned the same dryer for about a year and just started having this F03 problem. The condensation drain hose is the soft flexible rubber hose coming out of the back of the dryer and it drains into the same drain as a washer. It's easy to pull the hose off its connector at the back of the dryer and just blow hard into it to make sure there's no lint clogging the hose and reconnect it to the dryer. Next open the panel on the left of the dryer and thoroughly rinse (water only, no soap) clean the two parts behind the door (first is plastic and behind that is the condensation filter which probably is loaded with lint). Sometimes the lint in the condensation filter channels (those that run from front to back) can be quite stuck. Use a long pipe cleaner to get in there or a garden hose with a spray nozzle. Shake the excess water out of the condensation filter and dry off the outsides of two parts. Clean all the lint out the compartment where the parts go. There is one more crucial step not mentioned in the manual. Once you remove the condensation filter you will see a small plastic panel on the lower wall of the condensation filter slot. Slide a flat blade screwdriver or a blunt table knife under the panel and gently pop it open. Under the panel is a small chamber that you can't see very well where you will find a slurry of lint/water which is what clogs the condensation outlet. With latex gloves reach in there and clean it out. Use paper towel to get it all out. Blow hard into the dryer through the condensation hose to clear up any last bits. Pop the panel back in place as well as the condensation filter and the plastic part. Take out the lint filter (within the dryer drum compartment) and wash it with soap and water. Use an old toothbrush or something to clean the screens thoroughly. Rinse well and dry it completely. Clean all the lint out of the empty compartment. Put all three parts back into the dryer. Clean all lint off the door. Using paper towel moistened with white vinegar clean the two metal sensors in drum compartment on the front wall and lower left. Run the dryer empty but with heat on for a few minutes to make sure all the water is drained out. Now try drying a load. I think it's a good idea to rinse clean the condensation filter at least once a month since it collects a lot of lint. Hope this works for you.

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I have owned the same dryer for about a year and just started having this F03 problem. The condensation drain hose is the soft flexible rubber hose coming out of the back of the dryer and it drains into the same drain as a washer. It's easy to pull the hose off its connector at the back of the dryer and just blow hard into it to make sure there's no lint clogging the hose and reconnect it to the dryer. Next open the panel on the left of the dryer and thoroughly rinse (water only, no soap) clean the two parts behind the door (first is plastic and behind that is the condensation filter which probably is loaded with lint). Sometimes the lint in the condensation filter channels (those that run from front to back) can be quite stuck. Use a long pipe cleaner to get in there or a garden hose with a spray nozzle. Shake the excess water out of the condensation filter and dry off the outsides of two parts. Clean all the lint out the compartment where the parts go. There is one more crucial step not mentioned in the manual. Once you remove the condensation filter you will see a small plastic panel on the lower wall of the condensation filter slot. Slide a flat blade screwdriver or a blunt table knife under the panel and gently pop it open. Under the panel is a small chamber that you can't see very well where you will find a slurry of lint/water which is what clogs the condensation outlet. With latex gloves reach in there and clean it out. Use paper towel to get it all out. Blow hard into the dryer through the condensation hose to clear up any last bits. Pop the panel back in place as well as the condensation filter and the plastic part. Take out the lint filter (within the dryer drum compartment) and wash it with soap and water. Use an old toothbrush or something to clean the screens thoroughly. Rinse well and dry it completely. Clean all the lint out of the empty compartment. Put all three parts back into the dryer. Clean all lint off the door. Using paper towel moistened with white vinegar clean the two metal sensors in drum compartment on the front wall and lower left. Run the dryer empty but with heat on for a few minutes to make sure all the water is drained out. Now try drying a load. I think it's a good idea to rinse clean the condensation filter at least once a month since it collects a lot of lint. Hope this works for you.

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