Product Overview:
The AEG 043506698 01.11 is the main electronic control board (PCB) used in AEG/Electrolux front-loading washing machines, primarily in the Lavamat and ÖkoLavamat product lines manufactured between approximately 2007 and 2014. It serves as the central processing unit that manages all wash cycle logic, motor speed control, water valve actuation, and user interface functions.

Technical Specifications:

• Board Type: Main control PCB (primary)
• Microcontroller: 8-bit or 16-bit MCU (varies by production batch)
• Operating Voltage: 5V DC (regulated), 230V AC input (via power supply section)
• Number of Outputs: 8 relay outputs + 4 triac outputs
• Number of Inputs: 12 digital inputs (door lock, water level, temperature sensors)
• Communication Interface: 2-wire serial bus to display module
• Display Connector: 4-pin connector for LCD/LED panel
• Dimensions: Approximately 280 mm × 180 mm × 30 mm
• Connector Count: 5 multi-pin connectors (motor, valves, sensors, display, power)
• Firmware Version: 01.11

Material Composition:

• PCB Substrate: FR-4 glass-epoxy, 1.6 mm thickness
• Solder: Lead-free SAC305 (Sn96.5/Ag3.0/Cu0.5)
• Components: Surface-mount (SMD) and through-hole hybrid
• Conformal Coating: Acrylic conformal coat on entire board (moisture protection)
• Connectors: Molex/AMP sealed connectors, gold-plated contacts

Structural Features:

• Board mounted in machine rear panel, behind the control knob
• Five distinct connector groups: motor drive, inlet valve, drain pump, NTC sensors, display
• EMI filter section at AC input (common-mode choke + X/Y capacitors)
• Opto-isolated triac drivers for motor and valve control
• Fuse (3.15A T) on AC input for overcurrent protection

Working Principle:
The microcontroller executes the selected wash program stored in firmware. It reads inputs from NTC temperature sensors, pressure switch (water level), door lock switch, and tachometer (motor speed). Based on program logic, it drives triacs for motor speed phases, energizes relays for water inlet valve and drain pump, and controls the heater relay. All user inputs (program selector, start/pause, temperature) are read via the display module over a 2-wire serial bus.

Key Advantages:

• All-in-one design — controls motor, valves, heater, and display from single board
• Firmware 01.11 provides optimized water consumption and energy efficiency for Eco-cycle programs
• Conformal coating protects against humidity and detergent vapor
• Opto-isolated outputs prevent electrical noise from motors affecting logic circuits

Applicable Models (Cross-Reference):

• AEG Lavamat L6xxx series
• AEG Lavamat L7xxx series
• AEG ÖkoLavamat series
• Electrolux EWF12xx series (same platform)

Installation Requirements:

• Disconnect mains power and drain residual water before removal
• Photograph all connector positions before disconnecting
• Install with all connectors fully seated — partial insertion causes intermittent faults
• Secure board with 4× M4 screws to rear panel bracket

Usage Precautions:

• Do not expose board to direct water — conformal coating is not waterproof
• Replace fuse (3.15A T) if board was subjected to power surge
• If firmware 01.11 causes cycle errors, verify door lock switch and pressure switch first before replacing board
• Store replacement boards in anti-static bags