Technical Specifications:

• Part Number: 6065-042.244724
• Board Type: Multi-layer PCB (4-layer FR-4)
• Dimensions: Approx. 240 mm × 180 mm × 20 mm
• Microcontroller: 8-bit or 16-bit MCU (AEG proprietary or STM8/STM32 family)
• Operating Voltage (Logic): 5V DC / 3.3V DC
• Operating Voltage (Power Stage): 230V AC (via triac/relay outputs)
• Input Channels:
  • NTC temperature sensors × 3 (drum, heater, ambient)
  • Door lock switch (2-wire)
  • Water level pressure switch
  • Tachometer input (Hall sensor or back-EMF)
  • Detergent dosing pump interface
• Output Channels:
  • Main wash heater relay (16A)
  • Drain pump relay (10A)
  • Water inlet valve driver × 2 (hot/cold)
  • Door lock actuator driver (12V DC)
  • Motor speed control (triac or inverter interface)
• Communication: I²C bus (display module), UART (diagnostics)
• Firmware Storage: On-board SPI Flash (256 KB – 1 MB)
• EEPROM: 8 KB (fault log, configuration data)
• Conformal Coating: Yes (acrylic or silicone)
• EMC Compliance: EN 55014-1, EN 55014-2, EN 61000-6-1, EN 61000-6-3
• Operating Temperature: -10°C to +65°C
• Storage Temperature: -40°C to +85°C

Functional Features:

• Full wash/rinse/spin cycle control with programmable timing and temperature ramps.
• Motor speed regulation via triac phase-angle control (universal motor) or PWM (BLDC/inverter motor).
• Water level management using pressure switch input with adaptive fill logic.
• Heater control with over-temperature protection via dual NTC sensor cross-check.
• Door interlock management — prevents operation with open door; enables delayed start.
• Fault code generation and storage — retrievable via service diagnostic tool.
• Detergent dosing pump control — pulse-width modulated output for precise dosing.
• Display panel interface — drives LED/LCD display via I²C or parallel bus.

Material Composition:

• PCB Substrate: FR-4, Tg 155°C, 1.6 mm thickness
• Copper Layers: 2 oz outer layers, 1 oz inner layers
• Surface Finish: ENIG (Electroless Nickel Immersion Gold)
• Solder Mask: Matte green LPI
• Silkscreen: White epoxy ink — component designators and test points labeled
• Connectors: JST XH or Molex KK series, 2.54 mm pitch
• Potting: Silicone gel on high-voltage relay and triac sections
• Test Points: Gold-plated pads for production testing (ICT/FCT)

Structural Features:

• 4-layer stack-up: Signal / Ground / Power / Signal.
• Isolation slots between high-voltage (230V) and low-voltage (5V) sections, ≥ 6 mm clearance.
• Mounting holes: 4× M3 threaded holes for chassis attachment.
• Edge connector: 24-pin or 32-pin for connection to display panel and user interface.
• Water-resistant connector housings with silicone gaskets where wire harnesses enter.

Working Principle:
The MCU executes the appliance firmware stored in SPI flash memory. On power-up, it performs a self-test (POST) checking all sensor inputs and output drivers. It reads the selected program from the user interface, then enters the main control loop:

1. Fill phase: Activates water inlet valve(s) via triac/relay; monitors water level via pressure switch.
2. Wash phase: Drives motor at programmed speed; activates heater to target temperature via PID control using NTC feedback.
3. Rinse phase: Drains via pump relay; refills with fresh water.
4. Spin phase: Increases motor speed to maximum RPM; monitors imbalance via tachometer.
5. End of cycle: Deactivates all outputs; stores completion status and any fault codes in EEPROM.

The I²C bus communicates with the display module to show time, program status, and error codes. The UART port allows a service technician to connect a diagnostic tool for firmware update and fault reading.

Advantages & Highlights:

• Integrated design — all control functions on a single board, reducing wiring complexity.
• EEPROM fault logging enables accurate diagnosis without oscilloscope.
• Conformal coating protects against humidity, detergent splash, and dust.
• ENIG finish ensures reliable solder joints and long-term corrosion resistance.
• Firmware-upgradable via service UART or I²C bootloader.

Applicable Industries / Use Cases:

• AEG/Electrolux washing machine and dishwasher manufacturing (OEM)
• Appliance repair and aftermarket parts supply
• Electronics contract manufacturing (PCBA)

Compatible Machine Models (Partial List):

• AEG L6 series washing machines
• AEG F5 series dishwashers
• Electrolux EWF, EWT series washing machines

Installation Requirements:

• Install in the designated PCB mounting location inside the appliance chassis.
• Connect all wire harnesses to the correct connectors per the wiring diagram — do not force connectors.
• Secure the board with 4× M3 × 8 mm screws into the chassis standoffs.
• Ensure all connector locks are fully engaged before closing the appliance.
• Perform a full functional test cycle after installation.

Usage Precautions:

• Handle the PCB by its edges only — avoid touching component pads or IC pins.
• Use an ESD wrist strap and grounded work surface during installation.
• Do not expose the board to temperatures above +85°C during storage or operation.
• Verify the firmware version matches the appliance model before installation; reflash using AEG Service Tool if needed.
• If the board is replaced, perform a reset procedure (typically disconnect power for 5 minutes) to clear residual fault codes.
• Store in an anti-static bag at 15–35°C, < 60% RH.