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Forum Index => Dryer Repair => Topic started by: Rallyn8664 on February 04, 2010, 04:27:53 PM

Title: Whirlpool Electric Dryer troubleshooting help please
Post by: Rallyn8664 on February 04, 2010, 04:27:53 PM
I'm hoping someone here will take pity on my soul and please point me in the right direction...
I am a 40something year old woman with a fair background of mechanical repair, have successfully repaired all of my other whirlpool appliances including this one (thanks to my husbands 22 yrs in the navy ;) . Have built and repaired computers for several years.  I have very little electronics background knowledge but extremely willing to learn. I don't have anyone nearby with electrical background to help me with this, 3 kids, husband is employed out of state and he has less experience with appliance repair.  I can't afford a new dryer unless I have no other option. 
Problem:  Dryer quit producing heat but all else worked.  No heat for any cycle.  Breaker and power at wall good.  Pulled back off, found burnt wire from element to motor (L1 I think) Note that the burnt wire was from a former repair that included a wire w/terminal and wire nut.

I checked surrounding components for visible signs of damage, checked venting to outside (very clean) and inside dryer (not too bad except in the areas I'd never accessed previously specifically, motor area). 

White wire that goes to motor was also burned, couldn't tell how extensive the damage.  I cut it and repaired.  Had a backup wire terminal from some former dryer repair, cut the red wire to the burnt section, and repaired that.

After reading many appliance forums, I came to the conclusion the cause of the burned wire was not necessarily too much lint but almost completely disintegrated seals on the lint chute and possibly a loose connection.  Further inspection revealed the rear drum seal, belt, and blower wheel should also be replaced.  Vacuumed and blew out as much of stuff in there as I could.  I didn't test any of the terminals on the motor but all appeared to be intact, not burned.  There wasn't a burnt smell near motor.

I have already replaced the lint chute seals, and belt.  I put it all back together and now it doesn't spin at all.  Timer advances, belt is installed correctly, rear seal although worn is functional.  When I push the “push to start” button, I can feel it vibrate?  I'm certain I would have noticed this if it were always this way.  I immediately unplugged it and am now here asking for help.  I sincerely hope I haven't done something to make matters worse! :-\  I plan on ordering parts when I'm clear what is needed.  I'm hoping to just get her up and running again ASAP (we're running out of clothes and I really hate the laundry mat). 

This is where I need the help, I checked all the components with a Radio Shack 29 range multimeter but am unclear on how to interpret the results.  The tiny manual wasn't much help to someone who doesn't already know about electricity.  I know that I'm supposed to use the Rx1 setting, but I can't find a reference to that in the manual.  I put the meter on the ohms setting and used  “auto” for all readings

Heater Element:  10.1 –10.2 ohms Audible continuity check: displays short and emits tone
Hi-Limit thermostat:  000.0 – 000.2 ohms,Audible continuity check: displays short and emits tone
Thermal cut-off:  000.0 – 000.2 ohms,Audible continuity check: displays short and emits tone
Thermal fuse:  000.0 – 000.2 ohms, Audible continuity check: displays short and emits tone
*Cycling Thermostat: 000.0 – 000.1 ohms, Audible continuity check: displays short and emits tone

*wasn’t sure how to test this, I put probes across the two terminals that had the red wires and didn’t test the other two

** also wondering if my readings are moving because I’m not holding the probes on properly or long enough?  Are all of my parts bad?!!!
*** the results for testing to see if the element was grounded always gave 0.F which in the ohms setting means over flow or value you are measuring exceeds range, range was on auto

I can supply photos, wiring diagram, whatever information is needed upon request.  Thanks in advance to anyone who can help me get this fixed.

Model LER6848AN1
Title: Re: Whirlpool Electric Dryer troubleshooting help please
Post by: JWWebster on February 04, 2010, 04:49:37 PM

Whirlpool Dryer Thermal Fuse Part # 3392519This fuse is tied in with the door switch on your dryer. If the fluff/lint gets a bit built up or you get an air restriction this little bugger will melt and kill operation. Mounted on the backside next to the control thermostat, with one screw.
Title: Re: Whirlpool Electric Dryer troubleshooting help please
Post by: JWWebster on February 04, 2010, 04:51:35 PM
If that is good it could be the door switch, part # 279347


or the door switch actuator a part that pokes through a hole in the frame and pushes the door switch closed, part # 691581
Title: Re: Whirlpool Electric Dryer troubleshooting help please
Post by: Rallyn8664 on February 04, 2010, 05:45:25 PM
Thanks for quick replies, but I don't understand how to read the results I've got (never used multimeter before) Is my thermal fuse good or bad?  results below, will re-test if someone can tell me if I'm even doing it right.  
meter is radio shack 29 range auto/manual digital multimeter, sorry, can't seem to insert picture
Heater Element:  10.1 –10.2 ohms Audible continuity check: displays short and emits tone
Hi-Limit thermostat:  000.0 – 000.2 ohms,Audible continuity check: displays short and emits tone
Thermal cut-off:  000.0 – 000.2 ohms,Audible continuity check: displays short and emits tone
Thermal fuse:  000.0 – 000.2 ohms, Audible continuity check: displays short and emits tone
*Cycling Thermostat: 000.0 – 000.1 ohms, Audible continuity check: displays short and emits tone"

By the way, thanks to all here for posting their problems and solutions, have been to the site before and have been able to solve most repair problems just by reading forums here and a few other appliance sites.  THANKS- your input is most appreciated :) O0
Title: Re: Whirlpool Electric Dryer troubleshooting help please
Post by: schaffersapplian on February 04, 2010, 06:08:10 PM
If you get a tone, it checks as a closed circuit.  ( The part is closed and allowing power to flow threw it similar to a light switch and light bulb, if there was no beep, the light bulb would be off)  Beeps are good things.  thermostats and fuses should check closed  (with a beep) So power can flow threw them and go onto the next component.  Sounds like a power issue, possibly like JW said, a door switch.  You are going to have to dig alittle deeper.  It could also be a neutral issue where you are getting power to the motor, but it still will not turn on because the other "leg" isn't there.  I would suggest to put the back, back on the machine, and start looking for the problem on the inside of the dryer.  Its most likely a wiring issue or door switch
Title: Re: Whirlpool Electric Dryer troubleshooting help please
Post by: JWWebster on February 04, 2010, 08:18:16 PM
Them damn new fangled meters are confusing to me too. Fer $10 bucks you can get a meter at any flea market er harbor freight, heck they probably will be available at dollar general before long. Analog rules and digital sucks my opinion. I am old pilgrim. >:(
Title: Re: Whirlpool Electric Dryer troubleshooting help please
Post by: Rallyn8664 on February 04, 2010, 08:54:25 PM
Thanks for your help.  I checked terminals on door switch, short or beep when closed, open when door is open. Do I need to check anything else on it?  If I understand what Schaffersapp said:
Quote
" thermostats and fuses should check closed  (with a beep) So power can flow threw them and go onto the next component."
then all the thermostats and the fuse are ok.
  I went ahead and double checked the white wire that was damaged when the other one burned, the wire itself checked out fine. It lead to M5 on motor side and to the timer on the other end.

I have directions from the whirpool service site that tells how to check the push to start, but am not completely clear on the directions, specifically where it tells you to hold one probe on NO on the switch or R1 on the relay. My switch has 3 terminals none labeled NO.  Do they mean actually probe resistor 2 on the relay or the wire to it?  And Should I disconnect the relay board itself for testing?  Is this the next logical step or should I be looking at something else?  Thanks again for all your help, you guys rock! 8)
Title: Re: Whirlpool Electric Dryer troubleshooting help please
Post by: schaffersapplian on February 04, 2010, 09:02:13 PM
while pressing the push to start switch in, check between r1 and r2
Title: Re: Whirlpool Electric Dryer troubleshooting help please
Post by: Rallyn8664 on February 04, 2010, 10:25:18 PM
OK, I'm an idiot.  My push to start switch is fine and actually all three terminals were labeled (it's amazing what good lighting can do for a view).  Embarrassed to admit that I thought the push to start switch and relay were two separate components and after closer inspection, what I thought was the relay was actually the electronic control board.   :embarrassed:
  I've looked at the parts breakdown again and need to know if I should go back to the door switch and check anything else.  I only checked the two terminals on the switch. 
JW said: 
Quote
it could be the door switch or the door switch actuator

How to test actuator?
and what Schaffersapplian said:
Quote
Sounds like a power issue, possibly like JW said, a door switch.  You are going to have to dig alittle deeper.  It could also be a neutral issue where you are getting power to the motor, but it still will not turn on because the other "leg" isn't there.  I would suggest to put the back, back on the machine, and start looking for the problem on the inside of the dryer.  Its most likely a wiring issue or door switch
So, what to check next please?  In case I haven't mentioned it, I truly appreciate the advice   because I felt like I was chasing my tail with this thing. Meanwhile.....the laundry continues to pile...   
Title: Re: Whirlpool Electric Dryer troubleshooting help please
Post by: JWWebster on February 04, 2010, 11:26:16 PM
Look inside the door jamb. The tang from the actuator sticks out a little hole.
Title: Re: Whirlpool Electric Dryer troubleshooting help please
Post by: Rallyn8664 on February 05, 2010, 11:59:53 AM
Ok, I looked at the actuator or lever, it's the metal cage that the switch sits in and the lever extends down so when the door is closed it pushes the switch etc.  I noticed that the lever is rubber or plastic coated, some of my coating is missing- no coating on the side that touches the door.  Is this creating a short?  If it's supposed to be coated on that side, would of piece of electrical tape over it temporarily solve the problem?
Title: Re: Whirlpool Electric Dryer troubleshooting help please
Post by: JWWebster on February 05, 2010, 12:41:21 PM
That dont matter what does matter is if it is making the switch close when you shut the door.
Title: Re: Whirlpool Electric Dryer troubleshooting help please
Post by: Rallyn8664 on February 05, 2010, 01:08:46 PM
Is it possible that I am missing a whole terminal off my door switch, I mean has anyone ever seen that happen?  I tried my other idea with the tape I actually used a piece of heat shrink.  It didn't work.
When I didn't see any replies here yet, I went to WP parts to see photos of switch and actuator.

Title: Re: Whirlpool Electric Dryer troubleshooting help please
Post by: jumptrout51 on February 05, 2010, 02:45:19 PM
The 3rd door switch terminal is for a drum light.
If you have no drum the the 3rd terminal is mute.

Remove the belt from the drum and motor and try again to see if the motor runs.
Sounds to me like something is binding.
Title: Re: Whirlpool Electric Dryer troubleshooting help please
Post by: Rallyn8664 on February 05, 2010, 03:16:23 PM
Thanks, exactly what I needed to know, I almost gave my local WP $40 for a switch that isn't broke.  I've been looking for a definitive answer since I posted a couple of hours ago.
Headed to garage now...will post update shortly. 
Title: Re: Whirlpool Electric Dryer troubleshooting help please
Post by: Rallyn8664 on February 05, 2010, 03:53:15 PM
motor does not turn with belt off, dryer door switch closed and push to start button pressed :(

However, you can feel vibration at the start switch.
The motor itself turns freely by hand, the connections look fine.  Should I be checking the motor and centifrugal switch next?
I have the home study manual from the service matters site and it gives a procedure for checking both, is this the next step?
Title: Re: Whirlpool Electric Dryer troubleshooting help please
Post by: jumptrout51 on February 05, 2010, 04:55:56 PM
The vibration in the start switch is from the coil energizing inside the switch.
 Jump out the wires on the thermal fuse on the rear of the dryer exhaust vent. Do not let them touch anything. Try your start switch again.
Also you might press and hold the start switch to see if it starts.
Let us know what these 2 suggestions do for you.
Title: Re: Whirlpool Electric Dryer troubleshooting help please
Post by: Rallyn8664 on February 05, 2010, 06:19:56 PM
I tried the thermal fuse suggestion, nothing. :'(  Son showed up to unplug dryer for me (I have problems with my hands makes that plug hard to grasp) told him it didn't work, let me try it again, turned the timer again, open and shut door, pressed start and 
:) :) :) :) VIOLA! :)  :) :) :)



Now I must ask you masters of repair..what does it all mean? 
Title: Re: Whirlpool Electric Dryer troubleshooting help please
Post by: jumptrout51 on February 05, 2010, 06:31:03 PM
You forgot to plug it in.
Title: Re: Whirlpool Electric Dryer troubleshooting help please
Post by: jumptrout51 on February 05, 2010, 06:33:21 PM
Just kidding.
You may want to turn off the breaker,remove the cover to the wall outlet and inspect for loose terminals in the wall outlet.
Some dryer cords allow you to spread the spade ends slightly for a tighter fit.
Title: Re: Whirlpool Electric Dryer troubleshooting help please
Post by: JWWebster on February 05, 2010, 07:04:23 PM
It woiks?:D Must not have been a good connection but all is well now. I say let it do its thang.
Title: Re: Whirlpool Electric Dryer troubleshooting help please
Post by: Rallyn8664 on February 06, 2010, 01:55:03 AM
I'm back.  The only time it worked was when the the wires to the thermal fuse were jumpered.  :( When hooked up properly, it doesn't start. 
Audible continuity test says thermal fuse is good(plus it was a brand new never opened one I bought last year as a backup).
As mentioned earlier, all thermostats, element, test good.
Voltage from outlet is right on both sides.
Voltage at terminal block is correct.
I have checked every connection to all components on the back and none are loose.  All the connections to terminals on the centrifrugal switch are also firm. 
Terminal 4 is loose in the switch (yes, the one that goes to the thermal fuse).
I followed directions in the WP manual for testing the motor(which we know works) and obviously it checked out.  I didn't really understand the directions about checking the cent. switch so I guess I'm stuck.  Will throw the breaker and check out outlet connections tomorrow.  Did I mention that electricity scares the hell out me?  ;)
If it turns out to be the cent. switch that part costs about $75 plus I need a rear drum seal (approx.$30) and a blower wheel (15) I already paid $20 for a belt locally and have a few backup parts from previous repairs. 
Is it time to cut my losses here and go buy some cheaply made new machine that won't last half as long as this one?

Advice anyone?  and thanks again ya'll.  I never would have made it this far without your help.
Title: Re: Whirlpool Electric Dryer troubleshooting help please
Post by: jumptrout51 on February 06, 2010, 06:06:32 AM
The centrifugal switch only engages while the motor is running and sends power to the heater.

The thermal fuse must be bad if it works jumped and not through the fuse.
Title: Re: Whirlpool Electric Dryer troubleshooting help please
Post by: Rallyn8664 on February 08, 2010, 12:02:08 AM
Hey guys, hoping you'd give this another look because I really don't think it's that thermal fuse.  I've tried my best to educate myself and I obtained a NON autoranging meter.  I think I've done everthing that has been advised here so far.  I also diagramed all of my connections in case somehow I connected something wrong.  I also turned off the breaker and took off the switch cover and examined that wiring-it was very secure nothing looked burnt.  Re-checked the dryer cord and terminals-all as it should be.
Instead of typing all of this, I scanned the two papers with my chicken scratch, if you can't read something please let me know. 
I know I must be crazy, stupid, or stubborn (probably all three) but I just HATE the idea of getting my butt kicked by an old dryer!!!
Thanks in advance to anyone who's willing to take another look at this. 
To any other night owls, I'm staying up again in hopes of catching the Shuttle (I'm in central FL) so I'll check back.

I suspect that JW's either still DANCING or having happy dreams of the beloved Saints ;)
Title: Re: Whirlpool Electric Dryer troubleshooting help please
Post by: JWWebster on February 08, 2010, 08:28:05 AM
If all them things check out and have continuity and you have power to the dryer then your timer must be bad, part # 3397273
Title: Re: Whirlpool Electric Dryer troubleshooting help please
Post by: kellonnie on February 08, 2010, 10:29:05 AM
if it works with thermal fuse jumpered, it must be bad, part # 3392519
Title: Re: Whirlpool Electric Dryer troubleshooting help please
Post by: Rallyn8664 on February 11, 2010, 03:03:45 PM
I should have clarified-it only worked with the thermal fuse jumpered one time. I re-tried the jumper trick and still no power.  :(
If I knew for sure which terminals on the timer to check for what and what readings to expect, or something else to do/check to figure out exactly what is wrong,  :-\ I'm willing to run any test and and post back. I would very much like to get to the bottom of it even if I don't keep her.
Thanks again for all the help so far.   
Since the last post, I bought a used Kenmore off Craigs list. I must send out a signal that I'm a trusting fool- see new topic: "Shady Kenmore dryer purchase" because I'm at a loss here on what to do.  :embarassed:
Title: Re: Whirlpool Electric Dryer troubleshooting help please
Post by: JWWebster on February 11, 2010, 04:24:54 PM
If all of the components in the dryer have continuity AND you have power to the machine the timer is BAD.
Title: Re: Whirlpool Electric Dryer troubleshooting help please
Post by: Rallyn8664 on February 11, 2010, 05:06:18 PM
JW, thanks.  So- the timer can still advance through the various cycles but be dead?
Did I kill it by something I did? An unlucky coincidence? (this whole thing started with no heat, burned wire, then no power after wire repaired. The timer is about the only part of that dryer I didn't touch.   Just trying to understand how it all works.  ;)