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 Moderated by: BrntToast, RegUS_PatOff, appl.tech.29501 Search Our Sites for More Info!
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jenn aire double oven jgc8536ads  Rating:  Rating
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 Posted: Sat Nov 20th, 2010 11:31 pm
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bonedano

 

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anybody know what the purpose of the hall sensors are. I have an error code that means the lower ventilating fan is not operating but it is working normally. It would help to give the correct model # jjw9827dds

Last edited on Sun Nov 21st, 2010 12:54 am by bonedano

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 Posted: Sun Nov 21st, 2010 02:13 am
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RegUS_PatOff
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bonedano wrote: ... hall sensors ...

? ? ?

what error code ?



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 Posted: Sun Nov 21st, 2010 02:26 am
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BrntToast
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your range has a hall sensor error for the fans?

hall sensors are used in some brushless dc motors to detect and regulate the speed of the motor

they are used in most overseas built front load washers(LG and samsung use them)

this is the first i have heard of one being used in something as simple as a cooling fan though



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 Posted: Sun Nov 21st, 2010 02:30 am
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BrntToast
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a hall sensor error can be difficult to diagnose, cause you cant really tell what speed that motor is going(so is the sensor detecting a true problem with the speed of the motor, or is the sensor itself defective) on larger dc motors the sensor is changable, not sure about a small cooling fan

i'd like to see this wiring diagram from someone that has access to service matters

 



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 Posted: Sun Nov 21st, 2010 02:38 am
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Samurai Appliance Repair Man
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Should have a tech sheet somewhere in the range.

I searched the service manual and didn't see a mention of a hall sensor.



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 Posted: Sun Nov 21st, 2010 02:43 am
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found a nice bonus from my parts supplier

they had the wiring diagram in the parts breakdown, and there are indeed hall sensors for the fans

http://cid-161d5dae096a24ce.office.live.com/self.aspx/service%20manuals/jjw9827dds%20wiring%20diagram.gif?sa=97274751

thats the wiring for this model

i'm still searching the parts list to see if its a seperate part from the fan, cause if it is you can swap the upper and lower sensor to see if the error remains on the same over or moves ovens, this tells you if its the sensor, or the fan



 



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 Posted: Sun Nov 21st, 2010 03:01 am
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BrntToast
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nowhere on my parts breakdown do i find a seperate sensor,it could be part of the fans, however, the parts breakdown i have leaves alot to be desired, it only shows one oven for this dual oven, it could be cause both are identical, other than the control panel, but i cant be certain

but the fans are definatly controlled by a hall sensor

 



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 Posted: Sun Nov 21st, 2010 03:03 am
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BrntToast
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this is looking to be a good learning expierience for us all

anyone got the service manual for this monster they can post up?


 



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 Posted: Sun Nov 21st, 2010 03:26 am
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BrntToast wrote: this is looking to be a good learning expierience for us all
:playball:

from PDF page 10 of  JJW9827DDS30 Parts List & Diagrams

#16 7427P065−60 Fan, Lower

suibstitute 74008437



 

http://www.repairclinic.com/PartDetail/Fan-tange/1034742




JJW9827DDS30 Tech Sheets

JJW9827DDS30 Service Manual



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 Posted: Sun Nov 21st, 2010 03:34 am
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BrntToast
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thats the identical parts breakdown i saw

you cant tell if the hall sensor is part of the fan from the diagram, my listing shows 2 different part numbers for the upper/lower fans which also means you cant swap them

 



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 Posted: Sun Nov 21st, 2010 03:46 am
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74008437 Fan, tangential includes haul affect sensor. (series 10) at SearsPartsDirect

(same price)

 



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 Posted: Sun Nov 21st, 2010 04:03 am
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BrntToast
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there we go, Reg comes thru again

so as long as all wiring to the fan is in proper working order, the new part should remove the code, unless a bad board or connection on the board is the cause of the error

we just dont know if our forum suppliers part includes the sensor or not, cause their description does not say, either way

would be nice to know, cause they allow returns, i doubt sears does

 

 



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 Posted: Sun Nov 21st, 2010 04:18 am
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BrntToast
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would like to see what error our apprentice posts up

the manual says the fans are 120v a/c, i didn't know a/c motors used hall sensors, but i dont know everything, so maybe some do

but if the fan runs and it includes the hall sensor i am leaning towards a defective fan(cause the sensor is included)

 



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 Posted: Sun Nov 21st, 2010 04:29 pm
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bonedano

 

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The error code is 4d22

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 Posted: Sun Nov 21st, 2010 04:36 pm
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BrntToast
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well thats a fan error, and you say fan turns, the sensor is part of the fan

this all leads back to the fan

so i say change it

 



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