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Author Topic: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN  (Read 13481 times)

Offline Shotgun

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Ok, so this is what happened last time: 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
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.


Offline haroldsappliance

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Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
« Reply #1 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.

Offline Shotgun

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Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
« Reply #2 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*

Offline JWWebster

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Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
« Reply #3 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.
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Offline bigbuck

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Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
« Reply #4 on: March 19, 2012, 09:17:35 AM »
make sure exhaust is clear to outside, no restrictions.

Offline Shotgun

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Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
« Reply #5 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.

Offline Shotgun

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Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
« Reply #6 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?

Offline JWWebster

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Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
« Reply #7 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 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.
« Last Edit: March 19, 2012, 10:11:57 AM by JWWebster »
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Offline RegUS_PatOff

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Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
« Reply #8 on: March 20, 2012, 09:41:56 AM »
wasn't mentioned, but
Dryer cabinet must be fully assembled for correct air-flow (temperature)
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Offline haroldsappliance

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Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
« Reply #9 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.

Offline Shotgun

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Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
« Reply #10 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?

Offline JWWebster

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Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
« Reply #11 on: March 22, 2012, 09:45:02 PM »
bad circuit breaker. Seen it.
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Offline RegUS_PatOff

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Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
« Reply #12 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)
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Offline Shotgun

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Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
« Reply #13 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?

Offline Shotgun

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Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
« Reply #14 on: March 22, 2012, 10:25:18 PM »
maybe BLACK-PINK is better than RED...

Offline RegUS_PatOff

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Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
« Reply #15 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 ?
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Offline Shotgun

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Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
« Reply #16 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.

Offline JWWebster

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Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
« Reply #17 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.
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Offline RegUS_PatOff

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Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
« Reply #18 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
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Offline Shotgun

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Re: Maytag Model PYE4558AYW - Dryer not getting hot enough, AGAIN
« Reply #19 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:
  • the coil being fed full voltage and shuts off when it gets above selected heat settings? or
  • the coil goes on for a few moments, then off, then on, (oscillate) to meet the selected heat settings?
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*