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Forum Index => Dryer Repair => Topic started by: Shotgun on March 18, 2012, 10:16:44 PM

Title: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
Post by: Shotgun on March 18, 2012, 10:16:44 PM
Ok, so this is what happened last time: http://appliancejunk.com/forums/index.php?topic=5891.0 (http://appliancejunk.com/forums/index.php?topic=5891.0)

Essentially, I ended up replacing every electrical component in the circuit, and isolated the problem to be

This unit is here: http://www.appliancepartspros.com/partsearch/model.aspx?model_id=49277&diagram_id=28506014#d28506014 (http://click.linksynergy.com/fs-bin/click?id=omv7WULuxaw&subid=0&offerid=225193.1&type=10&tmpid=2111&RD_PARM0=http%253A%252F%252Fwww.appliancepartspros.com%252Fpartsearch%252Fmodel.aspx%253Fmodel_id%253D49277%2526diagram_id%253D28506014&RD_PARM1=http&RD_PARM2=%253A%252F%252Fwww.appliancepartspros&RD_PARM3=.com%252Fpartsearch%252Fmodel.aspx%253Fmodel_id%253D49277%2526diagram_id%253D28506014)
After replacing these two elements, the unit worked fine for about a year.


Now, I am having a similar problem; the unit coil seems to working properly.  The coil will heat (red hot), and then turn off after a few (2-4) seconds.  In about 15 or 20 seconds, it will come on again, and repeat.


1.  Is it correct to presume the issue is most likely the thermostat or the computer?


2.  Is there a way to test the computer to determine whether it is functioning properly, or not?



Thanks in advance; you guys have always been good to me with information.

Title: Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
Post by: haroldsappliance on March 19, 2012, 05:25:12 AM
Check that the high limit thermostat is not to close to the heat unit. You could move it out away from the unit to see if it is short cycling. Sounds like one of your stats is short cycling.
Title: Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
Post by: Shotgun on March 19, 2012, 07:48:03 AM
Check that the high limit thermostat is not to close to the heat unit. You could move it out away from the unit to see if it is short cycling. Sounds like one of your stats is short cycling.

Right -- did this -- no help.

*shrug*
Title: Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
Post by: JWWebster on March 19, 2012, 08:57:57 AM
Loose blower wheel causes the dryer to over heat and shut down the control thermostat prematurely causing the dryer to be excessively hot on top and take a long time to dry the clothes.
Title: Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
Post by: bigbuck on March 19, 2012, 09:17:35 AM
make sure exhaust is clear to outside, no restrictions.
Title: Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
Post by: Shotgun on March 19, 2012, 09:26:39 AM
Right - that was the first thing I checked.

Airflow from the unit is lass than warm when the exhaust pipe is removed from the rear of the dryer.
Title: Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
Post by: Shotgun on March 19, 2012, 09:34:21 AM
Loose blower wheel causes the dryer to over heat and shut down the control thermostat prematurely causing the dryer to be excessively hot on top and take a long time to dry the clothes.

The wheel is fine, not stripped, fully secured, and turning properly.  airflow from the unit seems normal, only not hot enough.

I am convinced this is some type of sensor or control issue.

The "short cycling" explanation sounds most viable. 

Is it true that this heating circuit has a coil, a controlling thermostat (front of housing), hi temp thermostat (above coil), and a fuse (beside coil), and that's it?
Title: Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
Post by: JWWebster on March 19, 2012, 10:00:58 AM
If that dryer has a 4 wire control thermostat go ahead and swap it out for a new one. The bi-metal disc inside gets fatigued. The control thermostat mounts on the blower housing where it judges the warm air coming from the drum to outside. THIS (http://click.linksynergy.com/fs-bin/click?id=omv7WULuxaw&subid=0&offerid=225193.1&type=10&tmpid=2111&RD_PARM0=http%253A%252F%252Fwww.appliancepartspros.com%252FAppliance-Parts%252Fwhirlpool-t---stat-cycle-item-number-ap4038936.aspx&RD_PARM1=http&RD_PARM2=%253A%252F%252Fwww.appliancepartspros&RD_PARM3=.com%252FAppliance-Parts%252Fwhirlpool-t---stat-cycle-item-number-ap4038936.aspx) is your control thermostat. It has 2 small wires and two large wires. The 2 small wires power up a small heater inside the thermostat making it shut down faster for knits and perma press. The larger wires carry the load that powers up the element. Blower wheel ok no air restrictions, in my opinion you need a new Control thermostat.
Title: Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
Post by: RegUS_PatOff on March 20, 2012, 09:41:56 AM
wasn't mentioned, but
Dryer cabinet must be fully assembled for correct air-flow (temperature)
Title: Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
Post by: haroldsappliance on March 20, 2012, 09:53:47 AM
Find out where your breaking circuit. Once it cycles Use a tool to jump your stats, one at a time. I doubt your losing it thru the motor relay. Could be losing it on one side of your receptacle or one side of your breaker. Pull one terminal from your element and back trace it. Good luck.
Title: Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
Post by: Shotgun on March 22, 2012, 07:53:49 PM
Ok, so I have ordered and received all new components for the entire circuit, including the computer.

I open the unit up now, and it is running a "half" red coil -- what would cause the coil to run at lower levels?  In the past, the unit did not run for long periods at "half" power like it is now -- what has changed?

Which component should I start with, and in which order, should I begin replacing components?
Title: Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
Post by: JWWebster on March 22, 2012, 09:45:02 PM
bad circuit breaker. Seen it.
Title: Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
Post by: RegUS_PatOff on March 22, 2012, 10:00:01 PM
...  is running a "half" red coil
the only way "half" of the Heating Element could be powered
is if it was partially shorted to chassis (ground)
Title: Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
Post by: Shotgun on March 22, 2012, 10:24:23 PM
oh no, I dont mean that -- I mean it is not glowing RED like was prior, it is glowing like HALF RED

What components regulates voltage to the coil?
Title: Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
Post by: Shotgun on March 22, 2012, 10:25:18 PM
maybe BLACK-PINK is better than RED...
Title: Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
Post by: RegUS_PatOff on March 22, 2012, 10:58:46 PM
oh no, I dont mean that -- I mean it is not glowing RED like was prior, it is glowing like HALF RED

What components regulates voltage to the coil?
nothing ...
full 220v  normally goes to the Heater ...
check your volatge at the Wall Outlet and Dryer Terminal Power Strip.
Black to White = 120v
Red to White = 120v
Black to Red = 240v
Has any House electrical work been done lately ?
Title: Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
Post by: Shotgun on March 23, 2012, 12:50:42 AM
Voltage from the wall is normal, 220V.  The fan and blower are moving air well, but the air is not really very warm at all, 80F, maybe.

Where is the Dryer Terminal Power Strip? 

What components control voltage to the coil?

Like I said, I now have a set of components, and would like to figure out the logical place to start.
Title: Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
Post by: JWWebster on March 23, 2012, 09:28:32 AM
Follow the cord into the appliance for the power terminal. The 4 wire control tstat mounted on the blower housing controls the heater. All other components are for safety only and do not control the heat.
Title: Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
Post by: RegUS_PatOff on March 23, 2012, 10:44:15 AM
... Where is the Dryer Terminal Power Strip? 
... What components control voltage to the coil?
1) where the Power Cord connects to the Dryer
2) it's either ON or OFF, gets the full 220v or nothing
measure the voltage on the Heater while it's ON
Title: Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
Post by: Shotgun on March 23, 2012, 11:27:05 AM
ok, all voltage measurements are within tolerance.


When this unit is in full operation, and air is flowing over the coil while being powered, is:
I suspect the computer must be to blame, if the other components fail to limit voltage levels.

Interestingly, I replaced the computer a year ago, and find hard to believe it decided to fail...

*shrug*
Title: Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
Post by: JWWebster on March 23, 2012, 12:17:55 PM
The heater is turned off and on all during the cycle. When the temp reaches 160f (for cotton) the thermostat shuts down, when the temp drops to 105f the thermostat powers the element back up until drum temp reaches approx 160f. If the blower wheel is clogged with lint or stripped the air flow will be improper EVEN THOUGH YOU FEEL IT COMING OUT THE BACK. On these machines the blower wheel gets loose and causes a lots of grief.
Title: Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
Post by: Shotgun on March 23, 2012, 12:37:19 PM
Yeah, I have triple checked the blower due to reports they fail often.

What component would cause the coil to get constant voltage, then (that is, not turn off)?  That seemed to be what was happening last night.

Computer or control thermo?

Title: Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
Post by: JWWebster on March 23, 2012, 01:17:21 PM
That is easy Coil shorted to the frame. Very common on this machine double check if the large limit's wire is NOT touching the heater mount. Seen it.
Title: Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
Post by: Shotgun on March 23, 2012, 01:23:50 PM
thanks JW, I'll let you know how it turns out
Title: Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
Post by: RegUS_PatOff on March 23, 2012, 01:29:41 PM
... the coil goes on for a few moments, then off, then on, (oscillate) to meet the selected heat settings
Heater is ON until the Vent temperature reaches aproximatley 160F,
then it turns OFF until the Vent temperature drops to about 130F
The ON /OFF time may be a  few minutes for each
Title: Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
Post by: Shotgun on March 23, 2012, 01:42:56 PM
... the coil goes on for a few moments, then off, then on, (oscillate) to meet the selected heat settings
Heater is ON until the Vent temperature reaches aproximatley 160F,
then it turns OFF until the Vent temperature drops to about 130F
The ON /OFF time may be a  few minutes for each

Ok, so here's the thing -- if the coil is ON, it is ON ON, like RED HOT ON, right?

Last night, I was seeing a not at all RED HOT ON, it like a PINK/GREY HOT ON.  I will check for shorts and ground again.

All this technical jargon is getting be HOT.

I am going to mess with it today, and hopefully get my wife OFF my back about it.

Title: Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
Post by: RegUS_PatOff on March 23, 2012, 02:03:53 PM
... not at all RED HOT ON, it like a PINK/GREY HOT ON

... measure the voltage on the Heater while it's ON
Title: Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
Post by: JWWebster on March 23, 2012, 02:40:06 PM
You can easily tell if you have a short by unplugging the machine and turning the timer on any cycle, then check to see if you can get a reading from either of the prongs on the end of the cord to the frame. You should NOT get a reading from either prong to frame. You should GET a reading from the middle GROUND prong to the frame.
If yours is a 4 prong cord you should not get a reading from red to frame or black to frame with the dryer unplugged.

After I do a repair on any appliance I always do this check before plugging one back into live power. You never know.
Title: Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
Post by: Shotgun on March 23, 2012, 05:11:55 PM
ok, all electrical == no problems.

Heating coil element properly working, both in and out of housing, @ 11+ ohms.

All thermostats replaced.

Computer left alone until all else fails.

Blower housing intact, HOWEVER, air seems to flow THROUGH the front door through a plastic liner which snugly fits against the blower housing.  This plastic liner was separated from the front panel by about a centimeter -- I plied it back in place, and reassembled the housing once again.  I think the insecure fit of the air path to the blower may have been the problem -- I am hoping it is better, since it is impossible to tell from the assembled unit.  I think JWWebster hit it on the head:

If the blower wheel is clogged with lint or stripped the air flow will be improper EVEN THOUGH YOU FEEL IT COMING OUT THE BACK.

While there was no lint build up, and the blower seems to be functioning properly, I am hoping the loose "dust collector dust assembly" is the culprit.

Plugged everything in, and it seems to be working.  The wife will confirm in about 40 minutes.
Title: Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
Post by: JWWebster on March 23, 2012, 05:18:28 PM
way ta git her did  O0
Title: Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
Post by: Shotgun on March 23, 2012, 05:34:02 PM
ok, well, not 100%, but better.

The "Intellidry" function is not working properly; the unit is turning off prior to completion.

But on a good note, the unit seems to be running much warmer.  Still a work in progress, I suppose.

What component(s) control the "Intellidry" stuff?

Does is measure humidity, or what?
Title: Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
Post by: Shotgun on March 23, 2012, 05:35:12 PM
Oh something else, also.

Should I invest in this "Permagum" for that seal?

And what is the best contact cement to use to seal the liner against the housing?  It appears much more loose than it should be...
Title: Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
Post by: bigbuck on March 23, 2012, 06:30:07 PM
 Would buy a new seal for the door then put on with high temp adhesive

Sent from my MB865 using Tapatalk
Title: Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
Post by: JWWebster on March 24, 2012, 08:47:55 AM
Get some windex and clean the sensor strips off inside the dryer. They probably have buildup on them from dryer sheets and are not sensing moisture as well as they could be. Also yank out the dryer sensing board and clean the contacts on the copper if cleaning the sensor strips don't pan out.
Title: Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
Post by: Shotgun on March 27, 2012, 10:36:15 AM
ok, back to square one...rrrrr!!  The unit is still not getting hot enough --

I'm going to swap out the thermostats and see what happens!  UNREAL!!

The lint trap seems to be gathering lint very efficiently -- does this mean the air flow from the tub is sufficient?
Title: Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
Post by: Ol' Lonely on March 27, 2012, 10:47:04 AM
Replace the Cycling Thermostat, part # 31001192 (http://www.repairclinic.com/PartDetail/Cycling-Thermostat/31001192/487706?modelNumber=PYE4558AYW)

This four wire thermostat that your model uses is a common part that I replace often.



(http://appliancejunk.com/images/ordernowrc.gif) (http://www.repairclinic.com/PartDetail/Cycling-Thermostat/31001192/487706?modelNumber=PYE4558AYW)
(http://www.RCappliancepartsimages.com/dbImages/i/00003141/Cycling-Thermostat-31001192--00945181.jpg) (http://www.repairclinic.com/PartDetail/Cycling-Thermostat/31001192/487706?modelNumber=PYE4558AYW)
Title: Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
Post by: Shotgun on March 27, 2012, 11:02:17 AM
This four wire thermostat that your model uses is a common part that I replace often.

Right -- I have purchased one already, and will replace it first (likely the after noon) -- interestingly, I replaced this component one year ago, and swapped it out with the original about a week ago, just to see if it would make a difference.  It didn't.