Error code · Washer-Dryer Combo

Samsung Laundry Combo Code TCH: Humidity Sensor Reading

Medium · inspection needed

Code: TCH
Appliance: Washer-Dryer Combo
Brand: Samsung
Warranty: 30-day workmanship

What TCH means

On the Samsung WD53DBA900H-series Bespoke AI Laundry Combo, such as the WD53DBA900HZA1, TCH means the resistance of the temperature and humidity sensor on the left of the panel is too low or too high. The unit uses that sensor during drying to judge the air. You will see TCH on the display and the drying function may stop or run poorly.

Common causes of TCH

Temperature and humidity sensor itself
Connector or wiring at the sensor
Moisture or residue near the sensor
Main board input

✓ One safe check you can try

1. Turn the unit off. 2. Wipe around the left side of the panel with a dry cloth, with no spray. 3. Make sure the room is not extremely humid or cold. 4. Do not open the panel to reach the sensor. 5. Try a drying cycle and call us if TCH comes back.

! Why to stop there

From the display we cannot say whether the sensor, its wiring or the main board reads wrongly.
We test the sensor reading and its connection before recommending a part.
We agree on the written price before the work, and our repair is covered for 30 days.

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 Washer-Dryer Combo codes

NC2 / NC3Samsung Laundry Combo NC2 / NC3: Cover or Kit Missing OCSamsung Laundry Combo Code OC: Overflow, Water Level not Controlled SDCSamsung Laundry Combo Code SDC: Drawer Door Lock SFSamsung Laundry Combo Code SF: System Error on the Controller SUDSamsung Laundry Combo Code SUD: Foam Detected, Then End tCSamsung Laundry Combo Code tC: Dryer Duct and Discharge Thermistors TC1Samsung Laundry Combo Code TC1: Washing Heater Sensor TC5 / TC7 / TC8 / TCA / TCBSamsung Laundry Combo TC5, TC7, TC8, TCA and TCB: Dryer Thermistors

TCHTCH questions

Where is the TCH sensor?

It is on the left of the control panel, inside the unit, so you do not need to touch it. We reach it safely when we diagnose the code.

Does room humidity matter?

A very damp or cold room can influence readings, but it rarely causes a steady code. If TCH repeats, we test the sensor. Normal room conditions in a laundry closet are fine, so we look to the sensor first.

Can I still wash?

Often yes, since the sensor serves drying. We suggest avoiding drying until we check it. Washing does not rely on that sensor, so you can finish wet laundry on a rack or line while the unit waits for us.

Book a visit

Still seeing TCH?

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

(713) 561-5298