Dryer Noise After Power Outage: Causes & Fixes

Quick Answer

After a power outage, a new dryer noise is most often caused by an electrical reset issue: the control board, motor relay, or blower motor starts in an abnormal state and chatters or hums. First action: do a full power reset (unplug or switch breaker off for 5 minutes, then restore power) and run a timed dry cycle. If the noise remains or the drum does not start normally, stop and diagnose before repeated starts.

Identify the Noise First

Use this to match your situation before chasing parts. The same outage can trigger different symptoms depending on where the dryer was in the cycle.

During drum rotation: a rhythmic buzz, pulsing hum, or brief rattle that appears only when the motor is running points toward motor electrical control (relay/triac) cycling incorrectly, not a steady mechanical scrape.
At startup: a loud hum with no drum movement, or rapid clicking from the console area, usually indicates the motor is being energized but not starting cleanly due to a reset/relay issue (sometimes combined with a stuck centrifugal switch).
During heating: a click-buzz pattern that starts when heat would normally come on suggests the heater relay is chattering from unstable supply or damaged relay contacts from the outage.
During cooling cycle: noise only in cool-down often points to the control varying motor power or cycling outputs differently; an electronic control that did not reboot cleanly can create odd relay chatter here.
Constant: a steady low hum anytime the dryer is plugged in (even when off) is abnormal and can indicate a control board relay stuck partially engaged.
Intermittent: random chatter/clicking or short bursts of hum often tracks with the dryer sensing moisture/temperature and cycling loads; post-outage, the cycling can become erratic if the control is confused or a relay is failing.

What This Noise Usually Means

A power outage can leave a dryer in an incomplete shutdown state, especially on electronic models. When power returns, the control board may boot with corrupted cycle state or a relay may have arced during the outage and developed high resistance. The result is a motor or heater circuit that energizes unevenly.

That uneven energizing creates noises you do not normally hear: relay chatter (rapid clicking), a motor hum that does not transition to smooth rotation, or a blower/motor that surges. These noises are electrical in nature, triggered by restart conditions, and often change when you switch cycles or press start again.

Most Common Causes

Incomplete reset of the electronic control board causing abnormal output timing (motor or heater relays cycling oddly)
Motor relay/heater relay chatter from damaged relay contacts (arcing during outage or power restoration)
Low or imbalanced supply voltage after the outage (especially on 240V electric dryers with one leg weak), leading to motor hum and failure to start
Control board failure where a relay is stuck or the board is intermittently rebooting
Motor start circuit issue exposed by the outage (centrifugal switch not transitioning cleanly), causing a hum/stop/retry pattern

How to Check Safely

These checks focus on confirming a reset/restart issue before you assume a mechanical failure.

Step 1: Perform a full power reset
- Unplug the dryer or turn the breaker off.
- Wait 5 minutes (not 10 seconds).
- Restore power and run Timed Dry (not sensor) for 10 minutes.
Step 2: Note exactly when the noise starts
- If it starts the moment you press Start and the drum does not turn, treat it as a start/voltage/relay problem, not a roller or belt issue.
- If it starts only when heat should engage, suspect heater relay chatter or supply issue.
Step 3: Confirm the dryer is getting proper power
- Check the breaker: many electric dryers use a 2-pole breaker. Turn it fully off, then on (one side can trip and look on).
- If the dryer is electric and it runs weak or hums, test the outlet voltage with a multimeter only if you are comfortable doing so. A technician can verify 240V across both hot legs and 120V from each hot to neutral.
Step 4: Listen for relay chatter location
- Rapid clicking from the console/control area points to the control board/relays.
- A deep hum from the lower cabinet with no drum movement points to the motor being powered but not starting properly.
Step 5: Try a different cycle selection
- Switch between Timed Dry and Air Fluff. If the noise changes dramatically with cycle choice, that supports an electrical control/output issue.
Step 6: Stop repeated start attempts if the motor hums
- If it hums and does not start within 1–2 seconds, stop. Repeated stalled starts can overheat the motor or damage the control.

When This Is Normal vs A Problem

Often normal after an outage

A single click when starting, then normal smooth running
One extra relay click as the dryer transitions into heat, then stable sound
A brief control reboot behavior (lights reset, cycle clears) with no ongoing noise

Not normal and needs action

Rapid clicking or buzzing from the control area that continues during operation
A constant hum with the drum not turning
Repeated start-stop surging that was not present before the outage
Any burning smell, hot cord/plug, or breaker tripping with the noise

When to Call a Technician

Electric dryer hums but won’t start after a full reset and breaker reset (possible low voltage, motor circuit, or control output problem)
Relay chatter persists and the dryer performance changes (long dry times, heat cycling oddly), suggesting relay/board damage
Breaker trips when the noise occurs or the plug/outlet feels hot
You need voltage testing and are not equipped to safely confirm supply on a 240V circuit
The noise is present even when the dryer is off but plugged in (possible stuck relay on the control board)

How to Prevent This Problem

After an outage, do a controlled restart: reset power for a few minutes before running the dryer.
Avoid running the dryer during unstable power (lights flickering, repeated brief outages). That is when relays arc and contacts get damaged.
Use the correct breaker and cord for your dryer and ensure connections are tight; loose connections increase arcing during power events.
If you have frequent outages, consider a whole-home surge protector to reduce control-board/relay damage.

Conclusion

If your dryer started making noise right after a power outage, treat it as a reset/restart problem first. Do a full power reset and confirm the breaker is fully reset, then test on Timed Dry. Clicking, chatter, or a motor hum that doesn’t transition to normal rotation points to a relay/control or power-supply issue. If it persists after reset or the drum won’t start cleanly, stop and schedule service.

Frequently Asked Questions

Why does my dryer click repeatedly after a power outage?

Repeated clicking is usually relay chatter. The control board is trying to energize the motor or heater, but the relay contacts are unstable or the supply voltage is not steady. Start with a full power reset and a breaker reset. If the clicking continues during operation, it is more consistent with a failing relay/control board or a power problem than a mechanical drum issue.

My dryer hums but won’t start after the outage. Is it just a belt?

A broken belt typically still allows the motor to run, and you often hear the motor and blower spin even though the drum doesn’t. A deep hum with no start is more typical of the motor being energized but not transitioning to run speed due to low voltage, a bad relay, or a motor start/centrifugal switch issue. Stop repeated starts and verify power and control behavior.

Can low voltage after an outage make a dryer noisy?

Yes. An electric dryer can hum, buzz, or chatter if it is missing one leg of the 240V supply or the voltage is sagging. The motor may struggle to start, and the control relays may chatter under load. Reset the 2-pole breaker fully. If symptoms remain, have the outlet voltage and connections checked.

Is it safe to keep using the dryer if it still runs but clicks?

One click at start and one click when heat cycles can be normal. Continuous or rapid clicking is not. It usually means a relay is chattering, which can overheat the relay or damage the board. If the clicking persists through the cycle or performance changes, stop using it and plan for diagnosis.

Will unplugging the dryer reset everything?

It often clears a confused control state, but it will not fix damaged relay contacts or a supply issue. Unplug or switch the breaker off for 5 minutes, then retest on Timed Dry. If the noise returns in the same pattern, move to power verification and professional service for relay/control testing.

After the noise, it starts to feel simple again—not because everything is solved in one dramatic sweep, but because the confusion finally stops taking up space. The whole thing reads less like a problem to wrestle and more like a page you can turn.

What’s left is just the quiet sense that you’re not backing away from reality anymore. No grand declarations, no spinning wheels—just that small, steady relief of knowing where you stand.