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Getting ready to replace thermal cut off and both wires are red. I don't know which one goes where. Maggie

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It doesn't matter, they can go either way.

Posted on Apr 22, 2008

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Thermal cutouts don't mind which way round you connect them, so provided you're confident that both of the wires you've got were originally connected to the old cutout, feel free to stick them onto the new one whichever way round looks neatest.

A.

Posted on Apr 22, 2008

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Whirlpool or Kenmore Dryer Does Not Heat


Electric

First , check the circuit breaker to make sure they are on . Be sure to UNPLUG the dryer , while checking with an ohm meter . When checking WITH power , BEST to have another person available in case of emergency . I do know of 1 person killed while working on his dryer .
A dryer operating on 240 volts , sends 120 volts to the timer and 120 volts to the motor . In between these two , are the thermal cut-off , and the element ( this is the basic operation parts ) . The 120 volts from the motor , goes directly to the element if selected for heat . The timer circuit , sends the other 120 volts , thru the operating thermostats , then thermal fuse , then thermal cut-off , then high-limit thermostat , then to the element . Usually , not ALL the time , the thermal fuse ( number 1 ) is the problem . The heating element ( number 2 ) is usually the problem , if the thermal fuse is good .
If the thermostats , element , and thermal fuse check good with an ohm meter , remove 1 wire from the element and check with a meter , which side is NOT getting 120 volts . Trace the wire which will either go to the timer ( occasionally ) or to the motor ( extremely rare ) .

Gas

On a gas dryer , for no heat , or , heats for a short time then runs but no heat afterwords until cooled down , first check that the electronic igniter , glows red . If it does NOT glow red , then check power to the burner ( 2 wires ) . If no power , then the thermal fuse is bad . (On electric dryers , the thermal fuse keeps the dryer from starting . On gas dryers , it keeps the dryer from heating . The thermal fuse , is a 1" long , or oval , white piece , with 2 wires going to it ) . Also if it does not glow red , the igniter itself could be bad . Again , check with an ohm meter . If the igniter glows red and clicks off , but no gas , the sensor could be bad . This sensor , is mounted to the side of the burner box , and when the igniter gets hot enough to ignite the gas , the sensor opens , sending power to the coils , which open dispensing the gas to heat the dryer . To check the sensor , with the drum removed , start the dryer , and after the igniter gets red , pull one of the wires OFF the sensor , and the gas should ignite . Do this very carefully , as electricity WILL be in the wire pulled off . If the dryer heats for a short time then stops heating , the problem will be the burner coils . These coils will get warm from the electricity going thru them , and will " open " ( short ) internally , until they cool down . Then heat again for a short time , then open , until cooled .
Most of the time , either the thermal fuse ( 1 ) or the coils are bad ( 2 ) or the igniter is bad ( 3 ) .

........A thermal fuse is a white 1" long torpedo looking piece , or , a white oval shaped piece , with 2 wires going to it .

NOTE1 : The thermal fuse keeps an electric dryer from starting and keeps a gas dryer from heating .

NOTE2 : If your dryer heats but the clothes do not dry , then a venting problem is obvious , as a dryer either heats or doesn't heat . Pull the dryer out and disconnect the vent from the dryer . Dry a load of clothes and if/when they dry in the normal amount of time , this tells you either the vent hose is kinked , maybe pushed back too far , or , the outside vent is blocked , or , the vent in the wall is restricted to the outside .

Electric Dryers

NOTE3 : If your lint screen is on top of the dryer , the element , thermal fuse , and thermostats are behind the rear dryer panel ....If the lint screen is behind the dryer door , then the element , thermal fuse ( located behind the lint screen housing ( 2 screws ) , and thermostats , are located behind the lower front panel .

on Apr 17, 2010 | Dryers

Tip

Whirlpool Dryer Various Test Procedures - Part 2


TEST #4 Heater
This test is performed when either of the following situations occur: Dryer does not heat Heat will not shut off
This test checks the components making up the heating circuit. The following items are part of this system:
Harness/connection, Heater relay, Thermal cut-off, Thermal fuse, High limit thermostat, Gas burner assembly,
Centrifugal switch, Exhaust thermistor, Machine control electronics, Gas supply. Dryer does not heat:
1. Unplug dryer or disconnect power.
2. Remove the back panel to access the thermal components.
3. Perform TEST #4b. If the thermal fuse is OK, go to step 4.
4. Perform TEST #4c. If the thermal cut-off is OK, go to step 5.
5. Locate the high limit thermostat. Measure the continuity through it by connecting the meter probes on the
red wire and blue wire terminals. If there is an open circuit, replace the high limit thermostat and thermal cutoff.
Otherwise, go to step 6.
6. Perform TEST #4d. If this is OK, replace the machine control electronics.
Heat will not shut off:
1. Unplug dryer or disconnect power.
2. Access the machine control electronics, remove the P14 connector, then measure the resistance between P14-3 (red-white wire) and P14-6 (red-white wire) at the connector. If 5–15 k ohms are measured, replace the machine control electronics. If the resistance is greater than 20 k ohms, replace the exhaust thermistor.
TEST #4a Exhaust Thermistor
The machine control electronics monitors the exhaust temperature using the exhaust thermistor, and cycles the heater relay on and off to maintain the desired temperature. Begin with an empty dryer and a clean lint screen.
1. Plug in dryer or reconnect power.
2. Start the Timed Dry cycle.
3. If after 60 seconds, F-22 or F-23 flashes in the display and the dryer shuts off, the thermistor or wire harness is either open or shorted. Unplug dryer or disconnect power. Check wire connections at the machine control electronics and thermistor. If wire connections are OK, check exhaust thermistor resistance per step 5.
4. If F-22 or F-23 does not flash in the display, the connections to the thermistor are good. Therefore, check the exhaust temperature value at any or all of the temperature levels in question, using the Timed Dry cycle, and the following process: Hold a glass bulb thermometer capable of reading from 90° to 180°F (32° to 82°C)
in the center of the exhaust outlet. The correct exhaust temperatures are as follows:
TEMP
SETTING HEAT TURNS
OFF* HEAT TURNS
ON High 155° ± 5°F
(68°± 3°C) 10–15°F
(6–8°C)
below the
heat turn off
temperature Medium 140° ± 5°F
(60°± 3°C) 10–15°F
(6–8°C)
below the
heat turn off
temperature Low 125° ± 5°F
(52°± 3°C) 10–15°F
(6–8°C)
below the
heat turn off
temperature Extra Low 105° ± 5°F
(41°± 3°C) 10–15°F
(6–8°C)
below the
heat turn off
temperature The measured overshoot using the glass
bulb thermometer in the exhaust outlet can
be 30°F (17°C) higher.
5. If the exhaust temperature is not within specified limits, or you have come here from step 3, remove the P14 connector, then measure the resistance between P14-3 (red-white wire) and P14-6 (redwhite wire) at the connector. If the resistance is OK, check P14-3 and P14-6 to machine ground. If resistance is greater than 0 (zero), replace wiring harness. NOTE: All thermistor resistance measurements must be made while dryer is
disconnected from power. The following table gives temperatures and ranges for the associated thermistor resistance values.
Temp
F C
Res
kΩ
Temp
F C
Res
kΩ
50° (10°) 19.0 -22.0 80° (27°) 8.5-10.5 60° (16°) 14.8-16.8 90° (32°) 6.8-8.8 70° (21°) 11.5-13.5 100° (38°) 5.0-7.0 If the thermistor resistance does not agree with table, replace the exhaust thermistor. If the thermistor resistance checks agree with the measurements in the table, replace the machine control electronics.
TEST #4b Thermal Fuse
The thermal fuse is wired in series with the dryer drive motor.
1. Unplug dryer or disconnect power.
2. Access the thermal fuse by first removing the back panel.
3. Using an ohmmeter, check the continuity across the thermal fuse. If the ohmmeter indicates an open circuit,
replace the failed thermal fuse.
TEST #4c Thermal Cut-Off
If the dryer does not produce heat, check the status of the thermal cut-off.
1. Unplug dryer or disconnect power.
2. Access the thermal cut-off by first removing the back panel. .
3. Using an ohmmeter, check the continuity across the thermal cut-off. If the ohmmeter indicates an open circuit,
replace the failed thermal cut-off and high limit thermostat. In addition, check for blocked or improper exhaust
system.

TEST #4d Gas Valve
1. Unplug dryer or disconnect power.
2. Access the gas valve by removing the front panel and drum assembly.
3. Use an ohmmeter to determine if a gas valve coil has failed. Remove harness plugs. Measure resistance across terminals.

on Apr 11, 2009 | Whirlpool LER4634J Electric Dryer

2 Answers

Dryer still runs it just isn't getting warm


The heating element is wired in series with a thermal cut-off and a high-limit thermostat both located on the heater housing.The thermal cut-off blows open when the high-limit thermostat fails to cycle off in order to regulate the heating element temperature. When the thermal cut-off is blown, power to the element is cut-off and the dryer will not heat. Replacing both thermal cut-off and the high-limit thermostat if the former is indeed blown. Click on the links below for the troubleshooting and repair details.


Troubleshooting Whirlpool and Whirlpool-made Electric Dryers (Filter on Top with Removable Back Panel) Running But Not Heating



Troubleshooting Whirlpool and Whirlpool-made Electric Dryers (With Front Bottom Panel) Running But Not Heating

Jun 18, 2011 | Whirlpool Dryers

1 Answer

I am trying to take the back off of my Whirlpool clothes dryer model LEQ8611LW1 to replace the heating element, but the back will not come off. How do I get to the heating element?


The dryer doesn't have a removable rear access panel and the heating element is accessible through the bottom front panel. Using a flat-blade screwdriver, locate and release the two bottom front panel clips approximately 4 inches from the sides.
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Once the panel is off, locate the heating element housing is on the right side and remove the hex-head screw from the heater shield.
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Remove the hex-head screw from the side of the heater housing and slide the heating element out then slide the new heating element in and secure it with the hex-head screw.

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Note:

The heating element is not necessarily busted and needs to be replaced when the dryer fails to heat up. The first thing to look at is the thermal cut-off. It blows open and cut power to the heating element if the high-limit thermostat is faulty. Disconnect the red wire from the thermal cut-off and the red/white stripe wire from the heater. Connect the red wire disconnected from the thermal cut-off to the heater terminal where the red/white stripe wire is disconnected from.

Reconnect power then start the dryer. The problem is indeed with the two bypassed components if the dryer heats up. Replace both the thermal cut-off and the high-limit thermostat and it should solve the heating problem. Do not use the dryer with those parts bypassed due to high risk of fire hazards.

Apr 01, 2011 | Whirlpool Dryers

1 Answer

Hello< My dryer is spinning no


The problem when the dryer runs but doesn't heat is usually caused by a failed high-limit thermostat and a blown thermal cut-off both located on the heater housing. Verify this by bypassing both parts for troubleshooting purposes then running the dryer.

Disconnect power then remove the screws attaching the bottom front panel to the bottom flange of the cabinet. Slide the panel down and off the cabinet to access the heater housing.
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Remove the hex-head screw from the heater shield and remove the shield.
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Disconnect the red wire from the thermal cut-off and the red/white stripe wire from the heater. Connect the red wire disconnected from the thermal cut-off to the heater terminal where the red/white stripe wire is disconnected from.
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Reconnect power then start the dryer. The problem is indeed with the two bypassed components if the dryer heats up. Replace both the thermal cut-off and the high-limit thermostat and it should solve the heating problem. Do not use the dryer with those parts bypassed due to high risk of fire hazards. Let us know should you need further advice.

Jan 11, 2011 | Kenmore Dryers

1 Answer

Heating fuse


There is a thermal fuse and a thermal cut off that can stop the heat entirely.

If you have some heat but not enough these are not the issue, let me know and I can go deeper if needed.

The thermal fuse is located behind the back panel just to the left of the exhaust outlet. It is white with 2 blue wires going to it.

The thermal cut off is behind the back panel on the right side about 1/2 way up the metal box. It also has 2 wires going to it (usually red).

Apr 24, 2010 | Whirlpool LGR8648L Gas Dryer

1 Answer

Model # 110.86820100 runs without heat, doesn't dry clothes


This is basically a Whirlpool dryer and they are notorius for having the thermal break fail. Disconnect dryer, remove back panel. The heating element is on the right side in a metal duct. On the left side of that duct is a small round disk with 2 red wires going to it. That is the non-resettable safety. Remove both wires and use an ohmeter to check for continuity. If there is no continuity, the thermal cut off and the thermostat at the bottom of the element MUST be replaced as a kit.
PN 279769
If thermal is good, check the heating element for continuity. Remove red wire from element and check across ELEMENT terminals. No continuity? Replace element pn 4391960
Both problems are generally caused by lack of air flow. Make sure that dryer has good air flow to outside after repair or you will get to do this again!Your part: 695563 Substitution: 279769 -->

Mar 03, 2010 | Kenmore Dryers

1 Answer

Dryer heating element


To the heating element goes Red and Red with White.
To the Hi-limit thermostat goes Red with White and Black.
To the Thermal cut-off goes Black and Red.

Dec 11, 2008 | Whirlpool GEW9250 Electric Dryer

2 Answers

Whirlpool Dryer Thermal Cutoff Wiring


the thermal cut off wires do not matter how you put them on.. The high limit is wired in series with the heating element.one red thick wire to element the wh/red top side of the high limit stat out of the high limit sat(other side) then goes to the other side of the heating element

Feb 20, 2008 | Dryers

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