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Moisture sensor location on roper dryer

Where is the moisture sensor on a roper dryer model RED4640YQ?

Posted by Anonymous on

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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Krazytech
  • 725 Answers

SOURCE: Moisture Sensor Location

It could be the sensor. However, check the exhaust vent for restrictions first. you can test the moisture sensor Damp Dry Test 1. Set the following Timer- DAMP DRY Fabric Care/Temperature switch- COTTON HIGH Wrinkle Guard switch- OFF Signal switch- LOUD Door- must be closed 2. Press the PUSH TO START switch. After approximately 16 seconds, the Timer will start to advance to the OFF position, and the ?End of Cycle? signal will sound. If one or more of these functions do not occur, proceed to the Factory Test. Factory Test The Factory Test allows factory/service personnel to test and verify all inputs to the Even Heat control. The basic operation of this test is to notify the operator with an audible beep every time the status of an input to the control changes state. Activating the Test Mode 1. Set the following configuration: Door- must be open Fabric Care/Temperature switch- AIR FLUFF Signal switch- LOUD Timer- TIMED DRY OR AUTO MOISTURE SESING PLUS selection 2. Turn the Wrinkle Guard switch from OFF to ON three times within a five second period. A single beep will sound to indicate that the factory test mode is activated. NOTE: If any of these initial conditions are not satisfied, the control will not enter the test mode. Test Mode Functionality When the control is in the Factory Test mode, every input change of state will result in a beep (with the exception of the Signal switch). This includes: Door switch Moisture Sensor (short/open Sensor will result in a beep) NOTE: A moistened finger or damp cloth may also be used. Fabric Care/ Temperature switch Wrinkle Guard switch Push to Start (PTS) switch (with the door switch closed) Timer (any cam input change will result in a beep) NOTE: Timer will advance during test. If any of the inputs do not result in a beep, proceed to the following component tests If the dryer shuts off too soon when set to the AUTO MOISTURE SENSING PLUS cycle, check the following: -HARNESS/CONNECTION -MOISTURE SENSOR -THERMISTOR -EVEN HEAT CONTROL Procedure: 1. Test the Moisture Sensor by following the procedure outlined in ?Factory Test?, beginning on page 3. If the Moisture sensor fails the ?Factory Test? (does not produce a beep sound), check the Moisture Sensor. a. If there is continuity to Ground for Yellow/Red (Y/R) wire with no load, look for a short in the Sensor or Y/R wire. Verify harness connections both at the Sensor and the Even Heat control. b. If the Sensor and Y/R wire are good, replace the Even Heat control. 2. If Factory Test passed, verify thermistor by performing test procedures outlined in ?Thermistor Test? 3. If problem persists after replacing Moisture Sensor and thermistor

Posted on Aug 27, 2007

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onthejob5130
  • 640 Answers

SOURCE: dryer tumbles, no heat

its a gas dryer it doesnt have ,,heating element...replace thermal fuse

Posted on Dec 28, 2008

  • 126 Answers

SOURCE: Broken sensor

In a GE dryer the sensor rods are below the front support and air duct assembly it may be that a wire has come loose or broken. The sensor itself may be bad but I would remove the front panel check wires before purchasing the part.

Posted on Jan 07, 2009

  • 1 Answer

SOURCE: Fisher & Paykel DE08 Dryer sensor

My guess is your PC Board (PCB) is shot and needs to be replaced. From the manual: The PCB measures moisture across the sensing bars on the front duct assemby (it is possible, but unlikely that the sensing bars have lint over them which may be causing a problem). As the clothes slide past the bars the PCB reads the current across the bars. When the clothes are dry the current ceases so the PCB advances the timer. There should be a min of 1 M ohm across the bars when dry. The resistance should be lower when mositure tracks across the bars. To test the bars check the resistance when dry, then wet your finger and place it across the bars and check for resistance. Again...it is very unlikely the bars are the problem. More likely it is the PCB. Part Number WE1M418 for the DE09 (similar to the DE08, but check to make sure with your local appliance parts person). How to replace the PCB: Open the console; unscrew and remove the PCB cover; disconnect the PCB connector; unclip PCB from its holding clips. Reassembly is the reverse procedure. NOTE: The PCB is NOT, repeat NOT, the timer!! It is located on the inside of the console on the left hand side of the instrument cluster

Posted on Mar 07, 2009

hunter19_46m
  • 7482 Answers

SOURCE: I have a Roper Dryer Model REX3514PQO. The dryer

Sounds like you have a broken drum belt.
If you have to replace your drive belt and if you have a front loading machine.
First you will need to unplug your dryer from the electric.
Remove the front of the machine, this will expose the belt and drum, remove the drum and belt and this will expose the drum rollers, idler arm bracket with pulley, and motor with pulley.
While you have the drum out, I would also recommend that you lubricate the drum rollers at the shaft of the roller with a good grade of machine oil like 3 in One oil. This will save you problem later with the rollers getting noisy, also check your drum rollers for flat spots, if they have flat spots on them this will cause a noise like a thumping type noise. You will need to replace the drum rollers if they have flat spots on them.
If the belt is not broken, then I would check to see if the timer switch is working properly, if not then you may need to replace it.
Good luck,
I hope this helps

Posted on Oct 06, 2009

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1 Answer

Roper model red4640yq1 heats in auto mode but not on timed dry


Lastly check your moister sensor. ( located inside the dryer door usually) Especially if machine seems to shut down early and clothes are still wet.
Test with a meter at room temperature and it should show continuity.
A failed moisture sensor will affect the dryer run time in the automatic moisture sensing cycle but it will not affect the heating of the dryer or the timed cycle. Which are reflected by the thermostats.

Read more :http://www.ehow.com/info_12203962_check-dryer-thermistor.htmlGOD IS So GOOD !!!! AND THAT'S WHY MY ADVICE IS FREE
How to Check Dryer Thermistor eHow

Feb 26, 2016 | Roper Dryers

1 Answer

Roper elecrtic dryer will only turn on when the selector is on auto dry less heat or on timed dry low heat and never has any heat, any help


Check your venting and lint basket. Check blower for lint build up and blower wheel obstruction., test by trying to turn the wheel manually by hand (should be easy) May have to remove cabinet or front/back plate to get to it)

Next check the heating element itself with a meter for continuity OHMS CLOSED CIRCUIT. If not its defective or has a short if its grounding out? Which in turns causes blown fuses or thermostats or overheating.

Check dryer Terminal block prongs both outside prongs should give combined 220, and 110 each if u check 1 outside & 1 center (ground) prong. Also check house electrical outlet for full voltage. 220 because if u only get half or 110 volts you will be able to run the machine which uses only 110 to run motor but not the heater which uses a full 220,

Check the thermal cut off, the cycling and the hi limit thermostats.
For continuity or OHMS. If no ohms or resistance they need replacement.

Lastly check your moister sensor. ( located inside the dryer door usually) Especially if machine seems to shut down early and clothes are still wet.
Test with a meter at room temperature and it should show continuity.
A failed moisture sensor will affect the dryer run time in the automatic moisture sensing cycle but it will not affect the heating of the dryer or the timed cycle. Which are reflected by the thermostats.

Apr 07, 2015 | Roper Dryers

1 Answer

My roper dryer starts runs few min. Then stops


ELECTRIC Dryer no heat or little heat, or shuts down to fast:

Check your venting and lint basket. Check blower for lint build up and blower wheel obstruction., test by trying to turn the wheel manually by hand (should be easy) May have to remove cabinet or front/back plate to get to it)

Next check the heating element itself with a meter for continuity OHMS CLOSED CIRCUIT. If not its defective.

Check dryer Terminal block prongs both outside prongs should give combined 220, and 110 each if u check 1 outside & 1 center (ground) prong. Also check house electrical outlet for full voltage. 220 because if u only get half or 110 volts you will be able to run the machine which uses only 110 to run motor but not the heater which uses a full 220,

Check the thermal cut off, the cycling and the hi limit thermostats.
For continuity or OHMS. If no ohms or resistance they need replacement.

Lastly check your moister sensor. ( located inside the dryer door usually) Especially if machine seems to shut down early and clothes are still wet.
Test with a meter at room temperature and it should show continuity.
A failed moisture sensor will affect the dryer run time in the automatic moisture sensing cycle but it will not affect the heating of the dryer or the timed cycle.

Feb 17, 2015 | Roper Dryers

1 Answer

My roper dryer works fine, it heats and the timer advances, it just wont shut off at the the end of a timed dry or auto dry. What do you think?


A timed drying cycle uses the timer alone to stop the drying cycle. Once it times out like an egg timer a set of contacts open up shutting off the dryer. Or a set of contacts closes to activate a relay which in turn shuts off the power.
Auto dry usually uses a moisture sensor which would do the same thing as the timer. Once it doesnt sense moisture in the load for a predetermined time it in turn triggers a relay which shuts the power off. Some auto dry cycles just use the timer alone and guess-timate the drying time by the selection.
If yours does not use a moisture sensor then most likely it is your timer/cycle switch. There may or may not be a relay involved.
Most dryers have a basic wiring diagram on the inside somewhere on one of the panels which will help.
Since yours is acting up on both cycles Im guessing you have a bad relay or connection to that relay somewhere IF it uses a moisture sensor.

Dec 17, 2014 | Roper Dryers

1 Answer

Where is the sensor located on a lg tromm elect dryer


The moisture sensor is located in front grill area inside the dryer. If you look inside the drum where the filter screen mesh is, you will find 2 curved metal bars. Those are your moisture sensors.
Hope this helps.

Nov 06, 2011 | LG DLE5977 Electric Dryer

1 Answer

RES7648KQ0 Roper dryer takes for ever to dry on auto but works fine on timed lowest setting. I'm thinking the moisture sensor. I found the location of the sensor for a front lint trap, but this is a...


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See that white skinny component by the blower? That is the thermal fuse
Below it is the control T-stat. Now when that filter housing is clogged
The temps rise considerably faster. This control turns the heating element on and off during the drying session. So if you have this:
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The autodry feature is not gonna work so good. Why?

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See that orange wire attached to the high limit thermostat?
That feeds power to the timer motor if the heater element is not on.
Bad control thermostat AND/OR air restrictions are the Autodry type dryer's worst enemy.
Try first cleaning the dryer and see if that makes a difference.
If it still has problems then change out the control thermostat.
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Videos and service manual is HERE

Aug 10, 2011 | Roper Dryers

1 Answer

I have a Roper Dryer it will not heat and timer will not turn off. THe handle turns it on but not off


How old is this machine and are the clothes dry and still running.? Is there a moisture sensor on this model ? Does the timer indicator move around the dial, if not timer is bad.

Jun 08, 2010 | Roper Dryers

1 Answer

Moisture sensor not working


No parts needed for this repair! Get a warm damp cloth and reach inside the rear of the dryer and clean the **** off the 2 strips of metal in the back called sensors. Next get the rear of the timer panel off and yank out the small computer board next to the timer. This is the moisture sensing board. Get some alcohol and clean the copper contacts. Shove the board back in and retry.

Jul 14, 2008 | Roper REX4634KQ Electric Dryer

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