Maytag Dryer Not Heating — 5 Causes & How to Fix (303395 Thermostat)

You toss a load of wet towels into your Maytag dryer, come back 60 minutes later, and they're still damp. The drum's tumbling just fine, but there's zero heat coming from the exhaust vent. If you're dealing with a dryer that runs but won't heat, you're not alone—this is the single most common dryer complaint, and it usually points to a failed safety component or heating element.

The good news? Most no-heat issues are straightforward fixes once you identify the right part. Let's walk through the five most likely culprits, starting with the one that fails most often.

Quick Symptom Check

Before you pull out tools, confirm what's actually happening:

• Drum rotates normally but no warm air
• Clothes take multiple cycles to dry or stay completely damp
• Exhaust vent blows room-temperature air
• No burning smell or tripped breaker (those indicate different problems)
• Gas valve clicks on gas models but no ignition

If that matches your situation, keep reading. If you're smelling burnt plastic or the dryer won't run at all, you've got a different issue.

Cause #1: Failed High Limit Thermostat (Most Likely)

Probability: 40%

The high limit thermostat is your dryer's safety shutoff—it's designed to cut power to the heating element if temperatures spike above 250°F. Problem is, after years of cycling on and off thousands of times, these thermostats fail in the open position. When that happens, they permanently cut power even when temperatures are perfectly normal.

On Maytag models like the MDG9316AXW, MDG9806AWW, and LDG7500ABW, the 303395 high limit thermostat sits on the blower housing or heating element housing, held in place by two screws. It's a disc-shaped component about the size of a quarter with two wire terminals.

How to diagnose:

1. Unplug the dryer completely (or flip the breaker for gas models)
2. Pull the dryer away from the wall and remove the lower front panel
3. Locate the high limit thermostat—it'll be mounted near the heating element with two wires attached
4. Disconnect the wires and test continuity with a multimeter set to ohms
5. A working thermostat shows 0 ohms (continuous connection) at room temperature
6. If it reads infinite resistance, it's failed open and needs replacement

This is the #1 reason dryers stop heating, especially on units that are 5+ years old. The 303395 replaces WP303395, AP6007529, and PS11740646—make sure you're getting an exact match for your model.

Cause #2: Clogged Lint System or Vent

Probability: 30%

Here's the thing nobody tells you: a clogged vent doesn't just make drying take longer—it can actually cause your dryer to stop heating entirely. When airflow gets restricted, the high limit thermostat does its job and cuts power to prevent a fire. Except now it's cycling off constantly, and some thermostats eventually fail in the open position from overwork.

Check these areas:

• Lint trap housing (remove the trap and look down into the chute with a flashlight)
• Exhaust vent hose behind the dryer (disconnect it and look for wadded lint)
• External vent hood (go outside and make sure the flapper opens freely)
• Blower wheel (pull the front panel and check for lint wrapped around the fan)

If your dryer was taking longer and longer to dry clothes before it stopped heating completely, this is your likely culprit. Even if you replace the thermostat, it'll just fail again if airflow is restricted.

Cause #3: Faulty Thermal Fuse

Probability: 20%

The thermal fuse is a one-time safety device that blows permanently if your dryer overheats (usually around 220°F). Unlike the high limit thermostat which resets, a blown thermal fuse stays open forever. It's mounted on the blower housing on most Maytag models including the MDG9800AWW, MDG7657BWW, and CDG4205AWW.

Testing is identical to the high limit thermostat: disconnect power, remove the wires, and check for continuity. No continuity = blown fuse. But here's the critical part—a thermal fuse doesn't blow for no reason. If yours is bad, you need to figure out why it overheated before installing a new one, or you'll just blow the replacement.

Cause #4: Defective Heating Element (Electric) or Igniter (Gas)

Probability: 7%

On electric dryers, the heating element itself can burn out. You'll see a visible break in the coil if you inspect it closely. On gas models like the MLG23PDHGW or LSG2704W, the igniter can crack or weaken, preventing the gas valve from opening.

These are less common than safety thermostat failures, but they do happen. If you've already tested the high limit thermostat and thermal fuse and both show continuity, the heating element or igniter is next on the list.

Cause #5: Faulty Cycling Thermostat

Probability: 3%

The cycling thermostat (also called the operating thermostat) regulates normal heat cycling during operation. When it fails, the dryer typically heats intermittently or not at all. It's less common than high limit failures but worth testing if everything else checks out.

When to Call a Pro

If you're comfortable with a screwdriver and multimeter, replacing the 303395 high limit thermostat is a 20-minute job. The part itself costs $33.99, versus $200+ for a service call. But call a tech if:

• You're dealing with a gas dryer and smell gas (shut off the supply valve immediately)
• Your multimeter readings don't make sense
• You've replaced the thermostat but it still won't heat
• There's visible damage to wiring or the heating element housing

For most Maytag, Whirlpool, Crosley, and Jenn-Air models using the 303395 thermostat, this is a straightforward DIY repair that'll save you serious money.

Frequently Asked Questions

Will my dryer run if the high limit thermostat is bad?

Yes—the drum will tumble normally and everything will seem fine except there's no heat. The high limit thermostat only controls power to the heating element, not the motor. That's why this failure is so frustrating: the dryer appears to work perfectly until you realize your clothes are still soaking wet after an hour.

Can I bypass the high limit thermostat temporarily?

Absolutely not. That thermostat prevents fires by shutting off heat when temperatures get dangerous. Bypassing it means your dryer could overheat lint buildup and ignite. The 303395 costs $33.99—just replace it properly rather than creating a fire hazard.

How long do high limit thermostats typically last?

Most last 8-12 years under normal conditions, but restricted airflow from clogged vents can kill them in 3-5 years. If you're replacing the thermostat, clean your entire vent system at the same time. Otherwise you'll be replacing another thermostat in a year when the new one fails from overheating.