Samsung Dryer Service Manual. PCB, Wiring Diagram

This section presents a service manual for Samsung dryers, with an emphasis on electronic components (PCB) and electrical circuits (Wiring Diagram). The document is designed for specialists and technical enthusiasts, providing a complete understanding of the operation of the device and its internal electronics.

📄 Includes:

🔧 Structure and operation of the control board (PCB)

⚡ Wiring diagrams of all components - motor, heaters, sensors

🧩 Marking and assignment of contacts

💥 Typical malfunctions and methods for troubleshooting

🧰 Step-by-step check of units and electronic modules

📑 Lists of spare parts and model compliance

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tC / tC5 / tCS – Temperature sensor error (overheating or thermistor failure)

HC / HE / HE2 / HC2 – Overheating, heater or ventilation problem

dF – Door lock error (door not closed or lock defective)

FE – High voltage in the network (power supply error)

bE / bE2 / bC2 – Control button error (panel stuck or faulty)

tO / tO3 – Thermostat error (temperature sensor failure)

E3 – Motor error (motor does not start)

Et – EEPROM error (control memory failure)

1 AC7 – Communication error between main modules

9C1 / 9E / 9E1 – Power supply error (low or high voltage)

Od – Drying too long (possible problem with the humidity sensor)

CLg / Cg – Cleaning required (filters or ventilation dirty)

1. Dryer does not turn on

Causes:

No power (damaged cable, tripped circuit breaker).

Faulty door latch.

Broken control board (PCB).

Solution:

Check outlet and power cord.

Make sure door is closed tightly.

Check fuses or replace control board if necessary.

2. Drum does not rotate

Causes:

Stretched or broken belt.

Faulty motor or rollers.

Problems with thermal fuse.

Solution:

Check and replace belt.

Inspect motor and rollers.

Replace blown thermal fuse.

3. Dryer does not heat up

Causes:

Faulty heating element.

Thermostat or thermal fuse has tripped.

Ventilation overload (clogged).

Solution:

Clean the air duct and filters.

Check the heating element and fuses with a multimeter.

Replace faulty parts.

4. The dryer is too noisy

Causes:

Worn bearings or rollers.

Objects are caught between the drum and the body.

Solution:

Inspect the bearings and rollers, replace if necessary.

Remove foreign objects.

5. Error on the display (e.g. HE, FE, tE, dF, etc.)

Causes:

Errors in temperature, humidity, door sensors, etc.

Solution:

Reset the dryer by disconnecting the power for 1-2 minutes.

If the error persists, check the corresponding sensors and wires.

6. Clothes remain damp

Causes:

The drum is overcrowded.

The filters or air duct are clogged.

The drying mode is not selected correctly.

Solution:

Load the drum no more than 75%.

Clean the filter and ventilation system regularly.

Check and set the correct mode.