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Electric Dryer takes very long to dry

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I tried to find a similar problem in recent messages but had no luck. This must be a simple problem

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  #1 (permalink)  
Old 09-14-2009, 06:45 PM
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Default Electric Dryer takes very long to dry
Model Number: NDE7800AYW   Brand: Amana   Age: 1 - 5 years   

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I tried to find a similar problem in recent messages but had no luck.
This must be a simple problem (I hope).
Dryer works (heats up) and does some drying but it seems she is taking longer and longer to get the same job done.
I can see the heating elements get red (sometimes) but they just don't stay that way.
Any and all suggestions will be appreciated.
Thank you

By the way, the ducts are clear, plenty of air blowing out the vent.
Don't use dryer sheets


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Last edited by AlanG : 09-14-2009 at 06:49 PM.
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  #2 (permalink)  
Old 09-14-2009, 08:29 PM
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Quote:
Originally Posted by AlanG View Post
I tried to find a similar problem in recent messages but had no luck.
This must be a simple problem (I hope).
Dryer works (heats up) and does some drying but it seems she is taking longer and longer to get the same job done.
I can see the heating elements get red (sometimes) but they just don't stay that way.
They are not supposed to stay on continuously.


Quote:
Any and all suggestions will be appreciated.
Thank you
By the way, the ducts are clear, plenty of air blowing out the vent.
Don't use dryer sheets
I'm still inclined to believe there is an airflow problem.
Something to check would be the duct area that the lint filter
slides into (see #7 in pic). Check inside of it for any lint build up
at the bottom or the inside walls. Next take the lint filter and
run it under a stream of water, does it allow the water to run through?
Take some soap and water and a soft brush and carefully clean it.
Next the vent, if you have plastic flex vent then get rid of it and
replace it with aluminum.

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Old 09-14-2009, 08:52 PM
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Thumbs up

Lets see, there does seem to be a good deal of lint built up at the bottom of the area of the lint filter. I will try to take that apart tomorrow night and clean it as best as possible.
As far as the duct work, it's all pretty rigid aluminim (no plstic stuff).
Thanks, and I will re-post with the results.
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Old 09-22-2009, 08:34 PM
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I got the official "dryer still doesn't dry as it used to" from the wife so cleaning the lint area didn't do it.
I noticed there is a temp sensor in the blower housing could that be not reading the temperature correctly and shutting off the heaters prematurely?
I also noticed there is another temp sensor on the heater housing - maybe that one not so good either.
Any comments as to which sensor would result in poor drying performace.
Thanks
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Old 09-22-2009, 09:29 PM
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The one on the blower housing is the one that regulates
drum temp. However I'm not yet convinced there isn't
an airflow problem. One other thing you could do would be to
just disconnect the vent from the dryer and run a few items.
and see if that makes any difference. You also could have an
air seal that's leaking which would keep enough air from being drawn through the right places at a sufficient rate.
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Old 09-23-2009, 07:05 PM
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So how would I check to see if there is an air seal issue.
I am assuming the door would be the normal problem area in that case??

The vent hose is literally about 2 feet long and I have checked it and it is quite clear, but I will check again! I have even checked the hose right off the blower and she is clear.

You hesitate at pointing the problem at the drum temp sensor - why?

Thanks
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Old 09-23-2009, 08:28 PM
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Quote:
Originally Posted by AlanG View Post
So how would I check to see if there is an air seal issue.
I am assuming the door would be the normal problem area in that case??

The vent hose is literally about 2 feet long and I have checked it and it is quite clear, but I will check again! I have even checked the hose right off the blower and she is clear.

You hesitate at pointing the problem at the drum temp sensor - why?

Thanks
I apologize for the hesitation.
Here is the thermostat that used to regulate drum temp.
Part Details - WHIRLPOOL THERMOSTAT, part number: AP4053749
The one on the element is a high limit safety stat.
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Old 09-24-2009, 07:43 PM
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Thumbs up

No apology necessary, I was only asking why as to gain some of the knowledge that you have.
I was looking for an answer like typically they don't go bad or if they go bad they totally go bad and you get no heat what so ever - something along those lines.
Is it common (or typical) that they just start slowly drifting off.

Also, the thermostat first gets mounted on a heater (# AP4070513) then attached to the blower housing - what is the purpose of this heater?

Thanks a bunch
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Old 09-24-2009, 08:52 PM
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Quote:
Originally Posted by AlanG View Post
No apology necessary, I was only asking why as to gain some of the knowledge that you have.
I was looking for an answer like typically they don't go bad or if they go bad they totally go bad and you get no heat what so ever - something along those lines.
Is it common (or typical) that they just start slowly drifting off.
The thermostat very well could be bad I'm just using caution.
I have seen many cases where someone will throw all sorts of parts
at their unit, only to find out that a non electrical part such
as a seal or some other non functional item was the cause
all along. I responded to someone earlier today who literally “assumed”
themselves from ownership of one of these…





The appliance still doesn't work.



Quote:
Also, the thermostat first gets mounted on a heater (# AP4070513) then attached to the blower housing - what is the purpose of this heater?

Thanks a bunch
The heater you are talking about is used for the lower temp (or delicate)
cycle. It causes the thermostat to cut out early so that you end
up with a lower drum temp.
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