Tip & How-To about Dryers

Dryer no heat Amana LEA80aw

Before checking the normal suspects. Motor switch, thermal switches, and element, pop the control panel forward.
Look at the two big wires on timer. Orange and black on mine.
If they do not look pristine and shiny replace terminals.
After taking drum out to check switches for naught, it was bad wire terminal on timer.

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kenmore 500 series gas dryer has no heat and no glow. Thermostat fuse has continuity. Replaced ignitor and coils. bypassed flame sensor and still have the same problem.


Hello,

Having checked or replaced what you have thus far here a few things still to check

Cycling thermostat in blower housing,in addition to thermal fuse it must have continuty to be good

Timer check wiring diagram in control panel and check for continuty that are supposed to be closed when set to a normal heat cycle

Motor switch heat circuit check again with wiring diagram and see which wires on motor switch must be closed when running so dryer will heat.This a built curcuit asurring the dryer will never heat when motor is off

If your model has it check heat relay in control panel for continuty on heating circuit for relay(not the circuit that closes relay)

as far as power to the ignitor the hot side comes from timer to and through the thermal fuse and cycling t-stat, to ignitor.the neutral comes from neutral wire on cord to and through motor when motor is running and motor switch is closed

so on ignotor plug check hot wire to ground(not neutral) if has 120 vac to it timer/t. fuse/ cycling t-stat and flame switch are all good and its the motor switch is the problem.The motor switch can not replaced seperatly and must replace entire motor

Gene

Aug 09, 2011 | Kenmore Dryers

1 Answer

the dryer is not heating


Hello there here is a list of things to check
Testing with an ohm meter checking on a dryer....
These are the places that pass voltage to the heater elements on an electric dryer. In order to check a dryer for no heat, here is a list of places to check. Remember to always unplug the appliance before starting testing with an ohm meter. Always remove wires from the part you are testing with an ohm meter ( write down what goes where first before removing any wires ).
Meter testing and usage tips.
1. Power supply-check power supply at terminal block where cord enters the dryer. Should read 240V. If you read 240V here, tested with a volt meter, unplug dryer and test components with ohm meter.
2. Thermostats-Cycle and safety thermostats-read them with an ohm meter. Should show continuity . How common thermostats work.
3.Timer-The timer has a set of contacts that pass voltage to the heaters. If you can not determine by wiring picture what they are, check across the two terminals with the largest wires on them. The heater wires are almost twice as large as the others. You should read continuity with timer in heat mode.
4. Thermal fuses-In recent years the makers of dryers are using thermal fuses to let you know something is wrong with your dryer. They are generally non resetting and have to be replaced. The thermal fuses are located on the heater element housing and should read continuity if read with an ohm meter. Most blown thermal fuses are the result of vent/air flow problems or a grounded heating element.
5. Selector Switches-Read the wiring picture and determine which switch is closed. You should read continuity across closed switches.
6. Safety Switch on Motor-There is a safety switch on motor to insure that heaters can not come on unless motor is running. It is normally open when the motor is idle/not running, and closes when motor runs. In order to check with an ohm meter, remove the two large wires on motor switch and make them electrically safe. Tape them. Plug the dryer in and start motor. Check continuity across the terminals on the motor switch you removed the heavy wires from. If it is ok you should read continuity. Remember that the smaller wires in a dryer carry the 120V and the large wires carry 240V. There is no voltage on these two terminals with wires removed. It is ok to test with ohm meter.
7. Heat elements-Test heater element with an ohm meter. You will read continuity across a good element ( 8-12 ohms is an average element ).
But darn it, I don't have a Ohm Meter....
To check the thermal fuse - You can bypass the thermal fuse (just connect the 2 wires together) for testing purposes only. To check the thermal cut-out - You can bypass the thermal cut-out (just connect the 2 wires together) for testing purposes only.
To check the thermostats for continuity - - You can bypass the thermostat (just connect the 2 wires together) for testing purposes only.
To check the Element: Try removing element and physically looking at the element wire for a break in the wire.

How to take apart information for GE style dryers
How to take apart information for Inglis - Whirlpool - Kenmore dryers
How to take apart information for Maytag dryers
How to take apart information for Frigidaire and White Westinghouse


Jan 09, 2010 | Dryers

2 Answers

dryer will not start, has power to unit,timer seems to be working....door closes and locks as it should...


try flipping you breaker off and on 2 or 3 times (hard and fast) if this don't work check element, timer , thermostats and safety switch on motor 2 heavy red wires (check wiring diagram for pin numbers of safety switch)....if this switch goes bad the motor will still run but it wont let power go to element

Aug 16, 2009 | Dryers

1 Answer

kitchenaid superba dryer won't heat Where is the heater fuse located?


Q - My electric dryer runs but will not heat, what could stop my dryer from heating?
A - Things that could stop a electric dryer from heating:
- house fuse or breaker ( needs two of them ), heating element, burnt wire, thermostat(s), thermal fuse ( not all models ), motor heat switch, timer, selector switch, burnt power cord/plug.
A ohm meter test for these parts is here.
Q - My gas dryer will not heat, what could stop my dryer from heating?
A - Things that could stop a gas dryer from heating:
- glow bar igniter, thermal fuse ( not all models ), coils on the gas valve, gas valve, thermostats,motor heat switch, timer, selector switch, sensor.
A page for checking gas dryers is here.
Meter testing and usage tips.
1. Power supply-check power supply at terminal block where cord enters the dryer. Should read 240V. If you read 240V here, tested with a volt meter, unplug dryer and test components with ohm meter.
2. Thermostats-Cycle and safety thermostats-read them with an ohm meter. Should show continuity . How common thermostats work.
3.Timer-The timer has a set of contacts that pass voltage to the heaters. If you can not determine by wiring picture what they are, check across the two terminals with the largest wires on them. The heater wires are almost twice as large as the others. You should read continuity with timer in heat mode.
4. Thermal fuses-In recent years the makers of dryers are using thermal fuses to let you know something is wrong with your dryer. They are generally non resetting and have to be replaced. The thermal fuses are located on the heater element housing and should read continuity if read with an ohm meter. Most blown thermal fuses are the result of vent/air flow problems or a grounded heating element.
5. Selector Switches-Read the wiring picture and determine which switch is closed. You should read continuity across closed switches.
6. Safety Switch on Motor-There is a safety switch on motor to insure that heaters can not come on unless motor is running. It is normally open when the motor is idle/not running, and closes when motor runs. In order to check with an ohm meter, remove the two large wires on motor switch and make them electrically safe. Tape them. Plug the dryer in and start motor. Check continuity across the terminals on the motor switch you removed the heavy wires from. If it is ok you should read continuity. Remember that the smaller wires in a dryer carry the 120V and the large wires carry 240V. There is no voltage on these two terminals with wires removed. It is ok to test with ohm meter.
7. Heat elements-Test heater element with an ohm meter. You will read continuityacross a good element ( 8-12 ohms is an average element ).
But darn it, I don't have a Ohm Meter....
To check the thermal fuse  - You can bypass the thermal fuse (just connect the 2 wires together) for testing purposes only.To check the thermal cut-out  - You can bypass the thermal cut-out (just connect the 2 wires together) for testing purposes only.
To check the thermostats for continuity -  - You can bypass the thermostat (just connect the 2 wires together) for testing purposes only.
To check the Element: Try removing element and physically looking at the element wire for a break in the wire.

How to take apart information for GE style dryers
How to take apart information for Inglis - Whirlpool - Kenmore dryers
How to take apart information for Maytag dryers
How to take apart information for Frigidaire and White Westinghouse
How to take apart information for Admiral, Norge, Magic Chef and Crosley

Mar 30, 2009 | KitchenAid Dryers

2 Answers

Dryer does not tumble at all


We found that our problem was the thermal fuse. After ruling out all other issues, we came across a diagram with the thermal fuse mentioned. We replaced this along with cleaning all lint from inside and now the dryer works great. Thermal fuse cost = $15

Oct 26, 2008 | Whirlpool Ultimate Care II LSQ9549L Top...

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