Whirlpool Dryer Not Heating: What to Check

How do you confirm a Whirlpool dryer is really not heating?

Whirlpool's own test takes 5 minutes. Select a heated timed cycle, run the dryer empty for 5 minutes, then open the door and feel inside ^[2]. The gas dryer page gives the same test ^[3].

The result splits the problem in two. Warm air means the heater or burner works, and slow drying comes from the load, the lint screen or the vent. A cold drum means a setting, the power or gas supply, or a failed part. This guide covers Whirlpool's own steps. For how gas burners and electric heaters work in any brand, see our general guide to a dryer that is not heating.

Could a Whirlpool setting be keeping the dryer cool?

Yes. Whirlpool says Air Only and Air/Fluff Only cycles never add heat; they are meant for heat-sensitive items and work best with Timed Dry ^[2]. Several other options can make a working dryer seem cold or slow.

Whirlpool setting	What it does to heat or time	What to do
Air Only, Air/Fluff Only	Never adds heat	Choose a heated cycle
No Heat temperature (some models)	No heat; not available on AccuDry cycles	Pick Low, Medium or High
Wrinkle Shield	Tumbles on and off after the cycle ends, up to 150 minutes on some models	Normal; unload or turn it off
Low temperature default	Some models ship with Low heat as the default	Select a higher setting if the care label allows
EcoBoost (some models)	On by default for Regular; adds about 40 minutes	Turn it off for the shortest time

The Wrinkle Shield and steam details come from Whirlpool's options page, which says the option keeps the drum turning on and off for up to 150 minutes after the cycle ^[5]. One Whirlpool quick start guide calls it "heat-free, periodic tumbling," lists 90 minutes for that model, and names Low heat and Wrinkle Shield among the as-shipped defaults ^[6]. The EcoBoost note is from Whirlpool's long dry time page ^[4].

If you open the door during Wrinkle Shield, the drum will feel cool even though the heater worked during the cycle.

Why is a Whirlpool electric dryer tumbling but not heating?

The most common supply cause is one of the two breakers. Whirlpool says its electric dryers use a separate 30-amp circuit fused on both sides of the line, with one breaker running the drum motor and the other running the heating element, so the drum can turn while the heater gets no power. If either breaker is tripped, the dryer may not heat, so Whirlpool says to check both ^[2].

Check both breakers or fuses. A tripped breaker handle can sit in a middle position that is easy to miss. Switch it fully off, then back on. If your home has fuses, check both. If the breaker trips again, leave it off and call an electrician.

Check the 240-volt supply. Whirlpool says the dryer needs a 240-volt supply and will not work correctly without it; a qualified electrician should check this ^[2]. Whirlpool also asks you to confirm the power cord is installed per the installation instructions (3-wire or 4-wire) and that the terminal screws are tight, with the dryer unplugged first. If you are not comfortable at the terminal block, have an electrician do it.

Read the display. An L2 code means low or no line voltage is keeping the heater from turning on. Whirlpool says it appears during initial installation and lists the steps: check the fuses or breakers (electric dryers use two), confirm the cord installation, restart on a heated Timed Dry cycle, and consult a qualified electrician if L2 persists ^[7].

Why is a Whirlpool gas dryer not heating?

Whirlpool's gas checklist is short. Make sure the dryer is connected to the gas supply. On a Whirlpool gas dryer, a closed gas shutoff valve lets the drum turn with no heat; the valve is open when its handle is parallel to the gas pipe. Then check that no household fuse has blown and no breaker has tripped, because the dryer still needs electricity ^[3].

Your part as an owner ends at looking at that valve. Check it after a move, a new install or plumbing work, since a bumped handle is easy to miss. Do not disconnect, adjust or tighten the gas line yourself.

If you smell gas, do not touch the dryer, light switches or phones indoors; leave the house and call your gas utility or 911 from outside.

If the valve is open and the power is on, the next suspects are inside the burner assembly: the igniter, flame sensor and gas valve coils. Whirlpool gives no owner repair step for these; its next step is service. Our general dryer not heating guide explains the gas ignition sequence so you can describe the symptom to the technician.

Can lint, the vent or the load stop a Whirlpool dryer from heating?

They are the most common reasons a Whirlpool dryer that heats still dries slowly, and a blocked vent can make the safety devices cut the heat. Whirlpool's long dry time page lists these checks ^[4]:

1. Load size. Fill the drum about one-half to three-quarters full so items can tumble, and dry bulky items such as comforters alone.
2. Lint screen. Empty it before every load. If dryer sheets leave a residue, wash the screen in warm water with a soft brush and let it dry completely.
3. Vent hose. Unplug the dryer before you pull it out. Look for a kinked, crushed or overly long hose, and clear lint at the wall connection. Use rigid or semi-rigid metal duct, not plastic or foil accordion duct.
4. Vent length. Whirlpool says many dryers work best with a total equivalent vent length under 35 feet, and each 90-degree elbow adds resistance. Your model's installation instructions give the exact limit.
5. Outdoor hood. With the dryer running, the flap should open freely. Clear lint, debris or nests.

Whirlpool recommends cleaning the home vent every 1 to 2 years, or sooner if drying slows, and sells a vent testing kit, part W11224254 ^[1]. On a gas dryer, move it gently so you do not strain the gas connection.

Lint is also a fire issue. The U.S. Fire Administration says not cleaning the lint filter and vents raises the risk of a dryer fire, and advises cleaning the lint filter before and after each cycle and checking that the outdoor vent covering opens when the dryer runs ^[11].

What do Whirlpool codes like AF, F3 E1 and L2 mean for heat?

Whirlpool's code meanings apply to its dryers in general; its pages do not split them by model series, and your owner's manual lists any codes not shown below.

Code	Whirlpool's meaning	First step
AF, Check Vent, F4 E3	Restricted airflow: clogged lint screen or vent, or a vent that is crushed, kinked or has too many turns	Clean the lint screen and vent; touch any key to clear
L2 (electric)	Low or no line voltage keeps the heater off; shown at installation	Check both fuses or breakers; electrician if it persists
F3 E1	Exhaust thermistor (exhaust temperature sensor) problem	Breaker off 1 minute, on, timed dry; service if it returns
F3 E2	Five loads in a row dried without the moisture sensors registering data	Level the dryer; use larger loads or an automatic cycle
PF	A power failure interrupted the cycle	Press and hold Start to restart
F# E# (alternating)	The control found a problem that needs service	Schedule service

AF, L2, PF and the alternating F# E# pattern come from Whirlpool's dryer code page ^[7]. F3 E2 is from its own code page ^[9].

For F3 E1, Whirlpool's steps are to turn off the dryer's circuit breaker or breakers, wait one minute, turn them back on, start a timed dry cycle and watch for one minute to see if the code returns. If it does, contact Whirlpool or schedule service ^[8]. Do not try to test the thermistor yourself. You can also search any code in our error code lookup.

When does a Whirlpool dryer need a technician?

Call once the setting, supply and vent checks are done and the 5-minute test is still cold. Whirlpool's next step on both no-heat pages is to schedule service online or call its customer service line at 1-866-698-2538 ^[2].

Situation	Who to call
Gas smell near the dryer	Leave the house, then call the gas utility or 911
Gas dryer cold with the valve open and power on	Whirlpool service or a licensed gas appliance technician
L2 code, no 240 volts, or a breaker that trips again	Licensed electrician
Electric dryer cold with both breakers on	Whirlpool service (heating element, thermal fuse, thermostats)
F3 E1 or an F# E# code that returns	Whirlpool service
Burning smell or scorch marks	Stop using the dryer; unplug it and call a technician

About the thermal fuse. The thermal fuse is a one-time safety device inside the cabinet that cuts the heat when the dryer overheats. A technician unplugs the dryer, opens the cabinet and checks the fuse for continuity; iFixit's guide describes that check and lists lint or a stray item blocking airflow, a stuck high-limit thermostat and age among the reasons a fuse fails ^[10]. Never bypass or jumper a thermal fuse to get heat back: it removes the dryer's overheat protection. In our view, a blown fuse means the vent should be cleaned before the part is replaced, or the new fuse may fail the same way.

If you decide to open any panel despite this, unplug the dryer or switch off its breakers first, and on a gas dryer also close the gas shutoff valve. For other brands, compare our Samsung dryer not heating guide and the LG dryer D80 code guide, or browse all Whirlpool appliance guides and dryer repair guides.