whirlpool elctric dryer diagnostic chart Lint Filter In Door

Quick Tips

Problem:
Gas flame comes on first few times then quits and ignitor keeps cycling on and off but never lets the gas go.
Answer:
Replace the coils on the Gas Valve.

Problem:
No flame, no ignitor at all,
Answer:
Inspect ignitor for small burnt spot on dark gray or black part of ignitor or check for 110 volts to ignitor when dryer should be calling for heat, or check for continuity with ohm meter.

Product Damage

· The ignitor at the end of the burner is very fragile.

· Do not hit or bump this.

· Handle with care.

Failure to do so could result in product damage.

Problem:
Dryer takes too long to dry or multiple times to dry a load
Answer1:
Pull the dryer out away from the wall. Unhook the vent from the dryer completely. Do not put anything over the dryer exhaust on the back of the dryer. Do a normal load with the vent unhooked. If it dries better or ok like this then the problem is in the dryer venting. Like a blocked vent pipe or a smashed or restricted vent hose.

Answer2:
If the vent doesn't make a difference, then check the blower wheel for excessive lint build up, check that there isn't anything stuck to the air intake baffle inside the drum, (i.e. the screen on the back wall of the dryer when looking into the drum). Check the lint filter chute for blockage. Check that the heating element isn't shorted to ground. Check the exhaust temperature of the dryer. A meat or pocket thermometer can be used for this. It should cycle between 120 degrees and 180 degrees. Check that the rear drum seal isn't worn out.

Sears / Kenmore /Whirlpool / Kitchen Aid / Roper / Estate Dryer
With Lint Filter In Door

Dryer will not run.

No power to unit
Door switch not making.
Thermal fuse open.
Thermal Cutout Open
Broken belt or belt switch.
Timer
Motor
Push-to-Start Switch

Check voltage supply. make sure you have both legs 110 + 110 = 220
Check door switch and wiring and continuity.
Check thermal fuse continuity.- if blown replace the thermal fuse and the cycling thermostat Check the heating element for a short to ground - check the air intake screen inside of the dryer drum for a dryer sheet stuck to the air intake screen. - You can bypass the thermal fuse (just connect the 2 wires together) for testing purposes only.
Check thermal cutout continuity -Check the heating element for a short to ground - check the air intake screen inside of the dryer drum for a dryer sheet stuck to the air intake screen. - You can bypass the thermal cut-out (just connect the 2 wires together) for testing purposes only.
Check for broken belt or check belt switch
for continuity.
Check timer contacts for continuity.
Check voltage to motor, contacts 4 & 5, (12OVAC). Check motor windings for
continuity, (2-4 ohms).
Check PTS contacts Ri - R2, while pushing start switch.

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No heat in dryer.

Improper voltage supply (No 220 volts)
Heater Element
Gas Burner
Thermostat
Thermal cut-off
Thermal fuse
Hi-limit thermostat
Motor centrifugal switch

Check for 24OVAC. (electric dryer) Note: the dryer will run but not heat if one leg is dead,110 +110=220
The element runs on 220. the motor on 110.
Check Element continuity, (8-12 ohms).
Check for voltage (12OVAC) to burner (gas models)
Check igniter continuity, Check Coils on gas valve Check flame switch continuity, (0 ohms or "closed" when cold).
Check thermostat for continuity
Check thermal cutout for continuity, (0 ohms or "closed").-Check the heating element for a short to ground - check the air intake screen inside of the dryer drum for a dryer sheet stuck to the air intake screen. - You can bypass the thermal cut-out (just connect the 2 wires together) for testing purposes only.
Check thermal fuse for continuity, (0 ohms or "closed").- if blown replace the thermal fuse and the cycling thermostat -Check the heating element for a short to ground - check the air intake screen inside of the dryer drum for a dryer sheet stuck to the air intake screen. - You can bypass the thermal fuse (just connect the 2 wires together) for testing purposes only.
Check High Limit thermostat for continuity.
Manually close centrifugal switch contacts, check for continuity, (1 M-2M ohms).

But Hey 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.
To Check the igniter : Inspect igniter for small burnt spot on dark gray or black part of igniter
To Check the Flame Sensor: You can bypass this, (just connect the two wires together) for testing purposes. Remember, the way this thing works ...It is normally closed,....the igniter comes on,....after the igniter gets hot enough, the flame sensor breaks, (becomes open, as in no continuity).
All other checks above will require a meter.

No heat in Gas Dryer.

Igniter Glows But doesn't release gas.

Suspect bad coils on the gas valve. Yes they are replaceable as a kit, which contains only the coils. This is a very common problem seen on a lot of the newer style dryers with the newer style gas valve that has 2 coils on it.

Sometimes you have to let the dryer run for 10 or 20 minutes for this symptom to show up.

Bad flame or radiant sensor

Drum will not rotate.

Broken belt
Broken belt switch
Idler pulley binding.

Check belt.
Check for proper operation of idler pulley.
Check the motor for a locked bearing

Not heating enough. or Takes too long to dry

Blocked air flow
Thermostat cycling too low.

Check lint filter,
blower housing,
Internal and external ducting and exhaust hood.
Check exhaust temperatures for proper cycling.
Check the vent. Make sure it's not blocked.

Tip: You can pull the dryer a few feet from the wall and unhook the vent hose from the back of the dryer, and do a load of clothes with NOTHING attached to the vent pipe on the back of the dryer to determine if the problem is in the vent or in the dryer To Clean the Vent pipe in the wall....You can use a vent cleaning brush as seen on our parts page, or a fish tape, garden hose, drain tape , with a rag secured to the end of it and pull it through. I've also seen people use leaf blowers.

Temperature too hot.

Thermostat heater open
Element shorted to ground
Vent Blocked

Check heater for continuity, (3200-4000 ohms).
Check selector and wiring for continuity.
Check and replace element as necessary.
Check and clear vent

Auto cycle timer won't advance.

Timer
Electronic control Dryness sensor
Cycling thermostat

Check timer motor continuity, (4000-6000 ohms).
Check Electronic Control
Check cycling thermostat

Dryer Noisy or making a thumping sound.

Drum Rollers
Dryer Making a High-Pitch Squeaking Noise

Check the drum rollers and replace if necessary
Check the idler pulley. (the pulley that keeps tension on the belt).

Heating Element Stays on when the door is opened and the dryer isn't running

Check the element for a short to ground

Check the motor centrifugal switch

Replace the Element
Check centrifugal switch contacts, check for continuity, (1 M-2M ohms).

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All of the information is provided FREE OF CHARGE. No liability is assumed by American A/C & Appliance, any of it's employees, or it's provider for the accuracy of the contents or damages caused by the use of these procedures.

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