Dryers

Electric dryer has power but only one heat setting works

If the dryer runs and tumbles but heat only works on some settings, one leg of the 240V power supply may be missing, which also often shows up as slow tumbling or a dim display.

Difficulty
Professional only
Time
N/A - professional diagnosis recommended
Pro cost
$150–$300

Symptoms

  • Dryer tumbles fine but heats only on certain settings
  • Weaker heat than normal on all settings
  • Motor sounds slower than usual
  • Timer or display seems to run at a different speed than normal

Likely causes

  • CommonMissing one leg of 240V power (one blown fuse or tripped half of a double-pole breaker)Electric dryers use both 240V legs for heat but only 120V for the motor and timer, so losing one leg kills heat but not tumbling.
  • PossibleLoose or corroded wire at the outlet, plug, or terminal blockA partial connection can supply enough power for the motor but not consistent heat.
  • PossibleFailed heating element with intermittent contactA partially failed element can produce weak or inconsistent heat rather than none at all.
  • PossibleFaulty double-pole breaker with one pole failingOne half of a two-pole breaker can fail while the other continues to work.

What to do

  1. Check your electrical panel for a double-pole breaker where one side looks tripped or different from the other, and reset it fully off then on.
  2. Unplug the dryer and inspect the plug prongs and outlet for scorching or looseness.
  3. Note whether the dryer only heats on certain settings or seems weaker across all of them, which helps narrow down power versus element issues.
  4. Do not attempt to test 240V outlet voltage yourself unless you're experienced with electrical testing.
  5. Have an electrician check the outlet and both legs of the circuit for proper voltage.
  6. Have an appliance technician check the heating element and terminal block connections if the outlet tests fine.
  7. Avoid continued use if you notice burning smells or a warm plug/outlet, and treat that as a more urgent electrical issue.

Tools and parts

  • Multimeter (for a qualified person)
Dryer terminal blockSearch: “dryer terminal block replacement”

When to call a pro

Have an electrician check the outlet and breaker, and an appliance technician check the terminal block and element, for this specific symptom pattern.

Safety

Use caution

Do not test or work on 240V outlets or wiring yourself unless qualified; have an electrician or technician diagnose partial power loss.

Related guides

Operator provides AI-generated troubleshooting information. It can be wrong. For safety-critical, electrical, gas, structural, medical, automotive safety, or other high-risk problems, consult a qualified professional.