Error code · Dryer

Samsung Dryer Extra Low and 20 min Lights: Power Frequency

Medium · inspection needed

Code: Extra Low and 20 min lights blinking
Appliance: Dryer
Brand: Samsung
Warranty: 30-day workmanship

What Extra Low and 20 min lights blinking means

On Samsung dryers without a digital display, the Extra Low and 20 min lights blinking together is the frequency error. The dryer is seeing an invalid power source frequency, meaning the supply is not at the rate it expects. The dryer indicates this with those two lights instead of a code on a screen, and it stops the cycle. Extra Low alone blinking is a different message, so check that both lights are blinking.

Common causes of Extra Low and 20 min lights blinking

A power supply with an unstable or incorrect frequency
A momentary power disturbance during the cycle
A control board reading the supply incorrectly

✓ One safe check you can try

1. Turn the dryer off. 2. Wait a moment, then turn it on and restart the cycle. 3. Check that the dryer is plugged into its own outlet with no extension cord. 4. If the two lights blink again, stop using the dryer.

! Why to stop there

A one-time disturbance can pass, but a repeat tells us the dryer or its supply has a real problem.
We measure the supply at the outlet and test how the control reads it.
You will have a written price before we start, with a 30-day workmanship warranty.

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

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Other Dryer codes

AE3 / AE4 / AE5 / E3Samsung Dryer Code AE3 / AE4 / AE5 / E3: Control Communication Error tE3 / tC5 / tCS / 1 tC / 1tC5 / 1tCSSamsung Dryer Code tE3 / tC5 / tCS / 1 tC / 1tC5 / 1tCS: Heat Sensor Reading 9E1Samsung Dryer Code 9E1: Supply Voltage Problem bC2 / 6E2 / 6C2Samsung Dryer Code bC2 / 6E2 / 6C2: Stuck Control Button d0 / 1 DC / 1 dFSamsung Dryer Code d0 / 1 DC / 1 dF: Door Not Registering Closed 1 HC / 1 FC / 1 ACSamsung Dryer Code 1 HC / 1 FC / 1 AC: Prefix Variants High or 40 min light blinkingSamsung Dryer High Light Blinking: Door Problem Low light blinkingSamsung Dryer Low Light Blinking: Jammed Button

Extra Low and 20 min lights blinkingExtra Low and 20 min lights blinking questions

What do Extra Low and 20 min blinking together mean?

It is the frequency error. The dryer sees an invalid power source frequency and stops. On models with indicator lights, this pair replaces a code on a display.

Is Extra Low blinking alone the same thing?

No. Extra Low by itself is shared with the heating error on some models. The frequency error needs both lights blinking, so check the full panel.

Will restarting the cycle fix it?

If the supply was only briefly off, a restart can clear it. If the lights return, the supply or the control needs to be tested before you use the dryer again.

Book a visit

Still seeing Extra Low and 20 min lights blinking?

A technician diagnoses it on site and gives you the price in writing before any work starts.

(713) 561-5298