KitchenAid Dryer Runs But Won't Heat: How to Fix

KitchenAid dryers share their entire heating circuit with Whirlpool: identical parts, identical locations, identical tests. Everything you need to reach lives on the rear bulkhead, so the drum stays in place. Unplug the dryer before testing any components. For gas dryers, shut off gas supply.

You need a digital multimeter, a 1/4-inch hex nut driver, a Phillips #2 screwdriver, and needle-nose pliers.

Electric dryer: test in this order#

Thermal fuse. It sits on the rear bulkhead near the exhaust duct — a small oval with two wires. On continuity it should read zero ohms; an open reading means it blew. Replace it, but understand a blown fuse means the dryer overheated, so clean the full vent before running or the new one goes too.

Heating element. Inside its metal canister on the bulkhead. Pull one lead and meter across both terminals: 8-20 ohms is healthy, open means a broken coil. The replacement is 279838 or a model-specific element.

High-limit thermostat. Mounted near the element canister. At room temperature it should be closed (zero ohms). If it has tripped, look upstream — this one opens from overheating, so the vent is again the suspect.

Cycling thermostat. Near the blower housing or exhaust duct. Also closed at room temperature; it is what switches the element on and off during a normal cycle.

Incoming power. An electric dryer needs both legs of 240V. A single tripped breaker pole leaves 120V — enough to spin the drum and light the panel, but not enough to fire the element. Reset both poles or replace both fuses.

Gas dryer: test in this order#

Gas valve solenoid coils. The top cause of no-heat on gas units, and the classic intermittent one: the burner lights, runs a few minutes, quits, and never re-lights because the coils fail once hot. Replace them as a set.

Igniter. It should glow bright orange within 60 seconds. No glow, or a weak glow, and the gas never lights. If it glows brightly but the burner still will not ignite after 90 seconds, the coils are not answering the ignition signal.

Thermal fuse. Same spot and same test as the electric model; on some gas dryers a blown fuse also stops the drum entirely.

Flame sensor. It watches for the burner flame and shuts the valve if it sees none. It should read closed at room temperature.

After any thermal-device swap#

Every time you replace a fuse or thermostat, clean the whole exhaust run, confirm the outside vent flapper swings free, straighten any kink behind the dryer, and run a cycle to feel hot air pushing hard out the exterior vent. Skipping this is how the new fuse blows within a week.

When to call a professional#

• The thermal fuse keeps blowing after a thorough vent cleaning (a deeper restriction or a control fault)
• Gas work is outside your comfort zone
• Every part tests good but there is still no heat (a control-board relay or wiring fault)

FAQ#

Q: What is the single most common no-heat cause? A: On electric dryers it is a blown thermal fuse, almost always from a restricted vent. On gas dryers it is the gas valve solenoid coils, which fail once they get hot.

Q: My dryer heats and then quits mid-cycle — what is that? A: On gas models that is the coil kit nearly every time: they conduct cold and drop out hot. Replace the coils as a set.

Q: Can I reset a blown thermal fuse? A: No. Unlike a thermostat, the thermal fuse is a one-shot device — replace it, and fix the overheating cause (usually a blocked vent) so it does not blow again.