CD
LG Washing Machine
Severity: MinorWhat Does This Error Mean?
The CD code on an LG washer is not actually an error — it means the machine is in a cool-down period at the end of a steam or sanitize cycle. The drum is tumbling slowly to cool down the laundry before you open the door. This is normal behavior. Wait for the cycle to finish completely and the code will go away on its own.
Affected Models
- WM3900HWA
- WM4500HBA
- WM3500CW
- WT7900HBA
- LG washers with Steam or Sanitize cycle
Common Causes
- Normal cool-down phase at the end of a Steam, Sanitize, or Allergiene cycle
- High-temperature wash was used and the machine is letting the drum cool before unlocking
- The Steam option was selected for the wash cycle
- Delay start feature ended and the machine is completing a high-temp cycle
- Machine is performing a drum self-cleaning cycle which uses high heat
How to Fix It
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Do not be alarmed — CD is not an error. It stands for 'cool down.' Your washer is doing exactly what it is designed to do after a high-temperature cycle. Simply wait for the code to clear on its own.
The cool-down phase typically lasts 5–15 minutes depending on how hot the cycle ran.
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Do not force open the door during the CD phase. The door may be locked while the drum cools. Forcing it open can damage the door latch or the door seal on front-load models.
The machine will automatically unlock the door and clear the CD code once it determines the temperature is safe.
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If the CD code is taking unusually long (more than 20–30 minutes), check that the laundry room is not excessively hot. High ambient temperature slows the cool-down phase.
In a very warm laundry room, consider running a fan to improve air circulation around the machine.
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If you see CD on a cycle that was not a steam or high-temperature cycle, perform a reset. Unplug the washer for 5 minutes, then plug it back in. This clears any electronic glitch that may have triggered the code incorrectly.
Electronic sensor glitches can sometimes cause CD to appear on cycles where it should not.
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If CD stays on for over 30 minutes consistently, a temperature sensor (thermistor) may be stuck reporting high heat. Have a technician test the thermistor and thermostat components.
A stuck thermistor is uncommon but will cause the machine to never believe it has cooled down sufficiently.
When to Call a Professional
The CD code almost never requires professional service — it is a normal operating status, not a fault. If the machine stays in CD for more than 30 minutes without progressing, that may indicate a thermostat or thermistor fault. In that case, a technician should inspect the temperature sensing components.
Frequently Asked Questions
Is CD an error code or a status message?
It is a status message, not an error. CD means cool down — it is the machine telling you it is cooling off before unlocking. You will see it after Steam, Sanitize, or Allergiene cycles. No action is needed. Just wait for it to finish.
How long does the CD cool-down last?
Usually 5–15 minutes for most cycles. After a full Sanitize or Allergiene cycle, which reaches higher temperatures, it can take up to 20 minutes. If it is taking longer than 30 minutes, something may be wrong with the temperature sensor.
Why does LG show CD instead of just finishing the cycle?
After a high-heat cycle, the drum and laundry can be quite hot. Opening the door immediately after a steam cycle could expose you to steam or hot air. The CD cool-down phase protects you from burns and also prevents thermal shock to the drum components. It is a safety feature.