Whirlpool Gas Dryer motor overheating - shuts-off


Whirlpool Gas Dryer motor overheating - shuts-off

Author
Message
animateme
View Quick Profile

Forum Guru
Forum Guru (723 reputation)Forum Guru (723 reputation)Forum Guru (723 reputation)Forum Guru (723 reputation)Forum Guru (723 reputation)Forum Guru (723 reputation)Forum Guru (723 reputation)Forum Guru (723 reputation)Forum Guru (723 reputation)

Group: Forum Members
Last Active: 10 Months Ago
Posts: 9, Visits: 118
Hello,

I have a Whirlpool Gas Dryer model 7MSGDS800MQ1 which has the problem of shutting off after about 15 to 20 minutes of operating.   I gather that it is the motor that overheats and the heat sensor safety switch is shutting down the power for protection.   While the motor is off, the timer continues to run and after about 15 minutes of cooling down, the motor starts up again.  

I have replaced the motor with an original brand-new part and the issue is still happening. 

Thinking that the drum might not be spinning freely, which could be causing the motor to overheat, I have also replaced the drum rollers, the idler pulley, the belt, the blower wheel, the rear drum felt seal, the drum plastic slide (bearing ring support) and the front panel felt seal.    All this made no difference.

To discard the possibility of the motor getting overheated due to an excessive heat from the gas burner, I replaced the high limit thermostat and the cycling thermostat.   Still, the issue is occurring. 

I have invested quite a bit replacing all these parts without any positive results but now its all about the challenge of fixing the darn thing!

Any ideas on what to try next will be greatly appreciated.
Thanks,

Admin
View Quick Profile

Supreme Being
Supreme Being (164.3K reputation)Supreme Being (164.3K reputation)Supreme Being (164.3K reputation)Supreme Being (164.3K reputation)Supreme Being (164.3K reputation)Supreme Being (164.3K reputation)Supreme Being (164.3K reputation)Supreme Being (164.3K reputation)Supreme Being (164.3K reputation)

Group: Administrators
Last Active: 4 hours ago
Posts: 2.3K, Visits: 13K
Hello,

Are you able to run the dryer a load or two without the vent hooked up on the back? This would eliminate any overheating or poor air exhaust issues.





animateme
View Quick Profile

Forum Guru
Forum Guru (723 reputation)Forum Guru (723 reputation)Forum Guru (723 reputation)Forum Guru (723 reputation)Forum Guru (723 reputation)Forum Guru (723 reputation)Forum Guru (723 reputation)Forum Guru (723 reputation)Forum Guru (723 reputation)

Group: Forum Members
Last Active: 10 Months Ago
Posts: 9, Visits: 118
Thanks for your reply.  I have not tried running it without the vent duct but this should not make a difference as the duct is only about 3 feet in length to reach the outdoors release.  I checked it and it is clear, no obstructions.
Any other ideas?
Admin
View Quick Profile

Supreme Being
Supreme Being (164.3K reputation)Supreme Being (164.3K reputation)Supreme Being (164.3K reputation)Supreme Being (164.3K reputation)Supreme Being (164.3K reputation)Supreme Being (164.3K reputation)Supreme Being (164.3K reputation)Supreme Being (164.3K reputation)Supreme Being (164.3K reputation)

Group: Administrators
Last Active: 4 hours ago
Posts: 2.3K, Visits: 13K
You this is one of those issues (based on what you have already replaced) that it would just have to be tracked down most likely by a experienced technician.. I wish I could assist you more but you have already replaced the most obvious parts.
If you have an Amp-Meter you could check and see how many amps the motor is pulling while running.. that could determine if the motor is dragging for some reason by returning a high amp load.





animateme
View Quick Profile

Forum Guru
Forum Guru (723 reputation)Forum Guru (723 reputation)Forum Guru (723 reputation)Forum Guru (723 reputation)Forum Guru (723 reputation)Forum Guru (723 reputation)Forum Guru (723 reputation)Forum Guru (723 reputation)Forum Guru (723 reputation)

Group: Forum Members
Last Active: 10 Months Ago
Posts: 9, Visits: 118
Admin - 9/21/2019 6:49:34 AM
If you have an Amp-Meter you could check and see how many amps the motor is pulling while running.. that could determine if the motor is dragging for some reason by returning a high amp load.


Thank you for your reply.
I measured the amps at the motor and I get 14 amps. The motor shows a rating of 6 amps. I measured with the motor dismounted and no load connected to it.
What does this mean? Should the motor be getting the 6 amps?  Why would the power be higher? 
Thank you,

Admin
View Quick Profile

Supreme Being
Supreme Being (164.3K reputation)Supreme Being (164.3K reputation)Supreme Being (164.3K reputation)Supreme Being (164.3K reputation)Supreme Being (164.3K reputation)Supreme Being (164.3K reputation)Supreme Being (164.3K reputation)Supreme Being (164.3K reputation)Supreme Being (164.3K reputation)

Group: Administrators
Last Active: 4 hours ago
Posts: 2.3K, Visits: 13K
Ok yeah that is not good at all... the motor is likely rated at 6 amps but should not be pulling more than 3-4 amps.. 14 amps is terrible..Honestly sounds like you have a bad motor even though you said it is brand new.. are you 100% sure that it is brand new?
The only other thing I can think of is a motor switch not switching over from start to run ..meaning motors will pull a higher amp to start then drop down to run position but this process is only a few seconds.





animateme
View Quick Profile

Forum Guru
Forum Guru (723 reputation)Forum Guru (723 reputation)Forum Guru (723 reputation)Forum Guru (723 reputation)Forum Guru (723 reputation)Forum Guru (723 reputation)Forum Guru (723 reputation)Forum Guru (723 reputation)Forum Guru (723 reputation)

Group: Forum Members
Last Active: 10 Months Ago
Posts: 9, Visits: 118
The motor came in its original Whirlpool part box and looked good as new so I assume it should be new.  
Now, I am not sure if I am measuring at the right place.   I got this high amp reading on the blue wire that is attached to the motor, not on the wires that go to the connector.
Here is a picture, this time I got a reading closer to 11 amps at that blue wire:
https://appliancerepairforum.com/uploads/images/dda598c9-3263-41c5-84f3-740e.jpg
I also measured at one of the red wires going to the connector and here I got a reading closer to 6 amps:
https://appliancerepairforum.com/uploads/images/b5331bf1-c6b3-4f08-b875-645f.jpg
Which of these is the right measure?
thanks,

Edited
Last Year by animateme
animateme
View Quick Profile

Forum Guru
Forum Guru (723 reputation)Forum Guru (723 reputation)Forum Guru (723 reputation)Forum Guru (723 reputation)Forum Guru (723 reputation)Forum Guru (723 reputation)Forum Guru (723 reputation)Forum Guru (723 reputation)Forum Guru (723 reputation)

Group: Forum Members
Last Active: 10 Months Ago
Posts: 9, Visits: 118
Someone kindly provided the wiring diagram for me but unfortunately I am not too familiar on how to read these.
Here it is, my model is the GAS model.    Would you please be able to tell which is the wire that I need to measure for the motor amp draw?   Thanks,

Attachments
Admin
View Quick Profile

Supreme Being
Supreme Being (164.3K reputation)Supreme Being (164.3K reputation)Supreme Being (164.3K reputation)Supreme Being (164.3K reputation)Supreme Being (164.3K reputation)Supreme Being (164.3K reputation)Supreme Being (164.3K reputation)Supreme Being (164.3K reputation)Supreme Being (164.3K reputation)

Group: Administrators
Last Active: 4 hours ago
Posts: 2.3K, Visits: 13K
I believe it is the red/white one that should be checked.. if that is the case you are pulling 6 amps which might be where it should be.. much lower than the 14 amps but still i dont think this motor should be pulling the max load with no belt or anything hooked up to it.. I will try reaching out to a couple active technicians for help here.. I have been retired from the service & repair business for 12 yrs so i could be a bit rusty on some of this.





Admin
View Quick Profile

Supreme Being
Supreme Being (164.3K reputation)Supreme Being (164.3K reputation)Supreme Being (164.3K reputation)Supreme Being (164.3K reputation)Supreme Being (164.3K reputation)Supreme Being (164.3K reputation)Supreme Being (164.3K reputation)Supreme Being (164.3K reputation)Supreme Being (164.3K reputation)

Group: Administrators
Last Active: 4 hours ago
Posts: 2.3K, Visits: 13K
Also, thinking on this one.. when you have the dryer plugged in.. door close and you connect the motor harness to the motor does it click or make a click sound before pressing the start button?







Reading This Topic