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Dryer will not start but light comes on, heats drum okay. The dryer heats, the light goes off when the door closes, checked the drum and the belt is okay. When the start button is pushed nothing happens.
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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.
CHECK THERMAL SHUT OFF THERMOSTAT USUALLY LOCATED ON THE BLOWER. for OHMS or resistance with a meter. Should show a closed circuit. Ohms WHEN THIS FUSE BLOWS IT WILL SHUT DOWN EVERYTHING.
NEXT Test the PUSH start switch with meter for OHMS. Should show OHMS when pushed in or on start, and no ohms or infinity when in off position.
If you hear a humming/clicking sound from motor area you more than likely have a bad motor.
Try this test out to see if u have weak windings or relay/capacitor on motor.
Open the dryer door and turn by hand the drum while machine is on ON position. And you or someone else presses the door engagement switch in. If it starts up then u have bad windings
Another thing to check is the belt safety switch. With a multi meter.
Especially if u just replaced the belt. The belt safety switch is attached to the Tensioner and motor. IT LOOKS LIKE A DOOR SWITCH SOMEWHAT a little black pc of plastic with 2 prongs going into it. Sits at bottom of motor. Under the Tensioner. Attach meter clips to the 2 prongs on switch, Then when the little white push button is pressed in it should show continuity and none when released.
Lastly check ur DOOR SWITCH for continuity with a meter when the button is pushed in the (on/Door closed position,) it may have gone bad.
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DRYER OVERHEATING:
Heating Element
A defective heating element can make a dryer too hot or not heat at all. . If the element partially shorts out, it can produce heat all the time, regardless of whether the dryer is calling for heat. Remove the heating element to inspect it. The coils should not be touching each other or anything else.
Other Causes and Conditions
Air Flow Problem
Dryers need good ventilation to work properly. If the vent is clogged it can make the dryer too hot. Clean all of the vent tubing thoroughly.
Cycling Thermostat
Although not common, a defective cycling thermostat can make the dryer too hot. The cycling thermostat is supposed to turn on and off the heat to maintain the proper temperature. If the thermostat is defective it may keep the heat on too long. The thermostat is not adjustable or repairable, it must be replaced.
HI LIMIT THERMOSTAT DEFECTIVE? SHOULD SHOW OHMS AT ROOM TEMPERATURE
Felt Seal
Most dryers have a felt seal at the front and rear of the drum to keep the heat inside the drum. If the felt seal is worn away or missing, the dryer may keep heating and make the dryer too hot. This is not common.
Blower Wheel
A defective blower wheel will not spin properly and will not vent the hot air, making the dryer too hot. Check to see if there is adequate airflow out of the dryer.
If you can hear the motor running when you turn the dryer on but the drum does not turn, it may be that the belt has broken or the idler has come loose. You don't mention the make and model of dryer but most are driven by a long belt that goes from the motor at the bottom of the dryer over the drum. It is held tight by an idler pulley. Google "drum will not turn" along with your make and model so find out how to gain access to the underside of the dryer to make sure the belt is intact.
Possible problem may be broken belt or misaligned door switch. Try carefully holding the door switch closed to see if the dryer starts. If the dryer turns while manually pressing the door switch, but not when the door is closed, then the switch is misaligned. Make switch alignment to fix.
First things first Sounds like your problem may be a broken belt, or the belt may have slipped off of the motor pulley, or idler arm pulley or a faulty motor. If you have to check/replace/repair your drum motor,drum seals,belt,rollers, etc. If replacing drum seals be sure to use a good grade of weather proof cement to hold the seal/s in place.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. Pay attention to the route of the belt, this will come in handy when you go to reinstall the belt and drum. Sometimes the belt will slip off of the idler arm or motor causing the drum not to turn. Second, the electricals Check to make sure you are getting full 220 Volt power to the dryer, if you are then: Check your Wiring Often the main wiring connection from the house, at the dryer, burns and the connection breaks. In this has happened to your dryer, you need to replace the power cord and the terminal block inside the dryer to which the wire is attached. Check the Door Switch If the door switch or the door-switch actuator is defective, the dryer won't work and you need to replace the failed component. The switch is inside the dryer main housing near the door frame. Sometimes you need to raise or open the top or front of the dryer to reach the switch. Check for continuity you should have none with door open, and should have a reading when closed. If not replace the door switch. Check to make sure you heating problem is not a lint build up in the discharge hose or the dryer,as this condition can cause heater/thermistor problems such as overheating of the heating coil leading to failure of the coil and burnout of the thermostat/thermistor due to overheat. Sounds like your problem may be with the heating coil. Remove the back/or front just under the door of the machine and try to locate the air duct going from the blower to the drum. Normally inside/outside the air duct you will find the heating coil and the thermostats/thermistors. Once you have located the heating coil, remove the two wires from it and check the coil with an ohm meter across the two terminals of the coil. You should read continuity across the terminals, if not you will need to replace the coil as it is faulty. If the heating coil is ok, then: You can check the thermostat/thermistor one at a time by removing the two wires and taping them together with electrical tape or with an ohm meter to test the thermostat/thermistor. (Should have/show continuity) If the coil heats up then replace the thermostat/thermistor. (Thermal fuse.If it overheats the dryer will not operate. It's located on the blower housing. It cannot be reset. A vent clogged with lint can cause it to overheat. You can test it with an Ohm meter or continuity checker, if no continuity, replace it) DO NOT LEAVE THE WIRES TAPED TOGETHER AFTER THE TEST. This could cause a FIRE, as you have removed the safety of overheat from the machine. Right after replacing a dryer element, always run the dryer on 'air fluff' / 'no heat', and go outside to verify there's plenty of air coming out your vent system.If the vent's clogged, that new element can burn out very quickly
The dryer will not start with a broken door switch. Replace the door switch if found defective.
Most dryers have a door switch actuator lever - when you close a dryer door, it presses against the lever, which actuates the door switch. If the lever is broken, the switch will not activate and the dryer will not start. Replace the lever, if broken.
Note: Door switch actuator lever usually comes with the door switch assembly and it is recommended to get the whole assembly since there is almost no price difference between the door switch assembly and just the lever. Check your model for more details.
First I would check the door switch I could have broken off or quit working if that is ok then there is a white thermal fuse on the blower housing behind the back panel check with a ohms meter to see if it is good it has two wires going to it
if it comes on and runs and has heat but the drum does not turn the belt is broken. To replace the belt unplug the dryer, remove the lint filter, remove the 2 philip head screws,with a stiff putty knife pry up in the top of the cabnet on the right and left to litf the top, disconect the door swithch remove the screw from each side and lift the front off romove the old belt the reinstall put new belt around the drum groove side toward the drum. put the idler pully in the slot closest to the motor be sure the tab is under the base and the 2 catches stit in the slot. now pull the belt through the idler pully and around the motor shaft. the reinsatll the front secure with the screws reconect the door switch,close the top, put the 2 screws back in where the lint filter goes then put in lint filter, plug in dryer and test.
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