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Gene  
#21 Posted : Tuesday, November 9, 2010 12:08:25 PM(UTC)
Gene

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The first thing you may want to do is make sure the blower wheel (#4 on the diagram) is not sliding along the motor shaft. If it does, replace it.

If there is nothing wrong, the new high limit thermostat may solve the problem.

If you need the correct part numbers, post the serial number of the dryer.

Gene.
Duderino  
#22 Posted : Wednesday, November 10, 2010 8:19:21 PM(UTC)
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The blower wheel is in good shape.
I rechecked the continuity on all of the parts and noticed that the Thermistor gave me resistance of 8ohm (if I am reading it correctly). Should this part be 0 like the rest?
My model number is MDG5500aWW with a serial number of 56756985AX. If the Thermistor is ok I will order a new high limit thermostat.

Thanks
Gene  
#23 Posted : Thursday, November 11, 2010 5:35:04 PM(UTC)
Gene

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The high limit thermostat Part number: AP4036956
Part number: AP4036956


The normal thermistor resistance should be about 10K Ohms at 70 degrees.

Gene.
Duderino  
#24 Posted : Thursday, November 11, 2010 8:00:23 PM(UTC)
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Thanks Gene.
I ordered the part and will let you know how it goes.
This all started when I replaced a squeaky Bearing Idler Assembly . Can you think of anything that might have caused this problem. Could I have re-installed something wrong when putting it back together? Can the electric motor direction be reversed? I am grasping at anything at this point and am willing to look at any possibility. If I were to star this all over from the beginning, what would you have me check/replace?
I see the flame come on and stay lit for about 2 minutes. It goes off for about 2 minutes and then it lights back up for about 30 seconds.
Duderino  
#25 Posted : Sunday, November 14, 2010 5:33:32 PM(UTC)
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Update:
I changed the High limit thermostat, it had no effect.
My symptoms are that the dryer can run (on timed drying) for an hour and the clothes are not dry. If sensor dry is selected, the timer counts down quickly (starts at 60 and is at 20 in about 10 min)but when the buzzer sounds the clothes are not even close to being dry. Any ideas on what I should look at?
Duderino  
#26 Posted : Saturday, November 20, 2010 9:29:44 AM(UTC)
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Does anyone have any ideas of what I should try next? I'm not sure where to go from here.
Gene  
#27 Posted : Monday, November 22, 2010 12:56:56 PM(UTC)
Gene

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Quote:
...I see the flame come on and stay lit for about 2 minutes. It goes off for about 2 minutes and then it lights back up for about 30 seconds...


It should stay ON for about a minute. Such short time points to insufficient venting.



Quote:
...the timer counts down quickly (starts at 60 and is at 20 in about 10 min)...


The control board can be bad as well.


Gene.
mqcheng64  
#28 Posted : Monday, January 31, 2011 8:54:58 AM(UTC)
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Originally Posted by: Gene Go to Quoted Post
The first thing I would check for continuity is the thermal fuse (#7 on the bulkhead parts break down diagram).

If the thermal fuse is blown, it has to be replaced together with the cycling thermostat (#9 on the bulkhead parts break down diagram).

- The part number for the thermal fuse is AP3132867

- The part number for the cycling thermostat is AP3131939

Here are the break down diagrams for the Whirlpool dryer Model LGR7648KQ1

Gene.

Hi Gene,
I have order and replaced all these parts from apliancepartpros.com (Ignitor,Thermal fuse,Hi-limit Thermostat, both Gas coil valve and thermal cycing. I have checked the blower wheel in good shape and clean vent to the outside. Turn on dryer, the ignitor glow for 20 seconds and then goes out, I could smell the gas, but no flame.Can you think of anything that have caused the problem. Please help! User Mqcheng64 .Thanks
mqcheng64  
#29 Posted : Monday, January 31, 2011 9:08:07 AM(UTC)
mqcheng64

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Originally Posted by: mqcheng64 Go to Quoted Post
Hi Gene,
I have order and replaced all these parts from apliancepartpros.com (Ignitor,Thermal fuse,Hi-limit Thermostat, both Gas coil valve and thermal cycing. I have checked the blower wheel in good shape and clean vent to the outside. Turn on dryer, the ignitor glow for 20 seconds and then goes out, I could smell the gas, but no flame.Can you think of anything that have caused the problem. Please help! User Mqcheng64 .Thanks
Maytag MDG8600AWW Dryer
mqcheng64  
#30 Posted : Monday, January 31, 2011 9:21:40 AM(UTC)
mqcheng64

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Originally Posted by: mqcheng64 Go to Quoted Post
Maytag MDG8600AWW Dryer

Hi Gene,
I have replaced all these order from Apliancepartpros.com ( ignitor, Thermal fuse, Hi-limit thermostat, Both gas coil valve and cyling thermostat). Checked all parts passed continuity, checked blower wheel in good shape and cleaned vent to outside and still have same problem. Turn turn on dryer the ignitor glow for 20 seconds and then goes out, I could smell the gas , but no flame. Can you think of anything that have caused this problem. Dryer Model#MDG8600AWW Maytag . Please Help! Thanks
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