Technical Specifications:

• Part Number: 120-166-006
• Input Voltage: 220-240V AC / 50Hz
• Output Channels: 6-8 relay/triac outputs
• Control Interface: I²C bus / Serial communication
• Display Output: LED / LCD driver
• Operating Temperature: -10°C to +85°C
• PCB Material: FR-4 (UL94 V-0 flame retardant)
• Dimensions (Approx.): 250mm × 180mm × 30mm
• Weight: Approximately 350g
• Certification: CE, VDE, UL

Functional Features:

• Full Wash Cycle Control: Manages fill, wash, rinse, spin, drain sequences.
• Motor Speed Control: Drives BLDC/Universal motor via triac or inverter output.
• Water Valve Control: 2-way solenoid valve activation for hot/cold water.
• Heater Control: Triac-switched heating element for wash temperatures up to 90°C.
• Door Lock Management: Controls door interlock solenoid with delay timer.
• Fault Diagnostics: Stores error codes; displays on front panel.
• Anti-Flood Protection: Aquastop valve activation on leak detection.

Material Composition:

• PCB: FR-4 epoxy glass fiber, lead-free solder (SAC305)
• ICs: Microcontroller (MCU), MOSFETs, optocouplers, voltage regulators (7805/7812)
• Relays: Omron / Finder miniature relays (10A/250V)
• Connectors: Molex / AMP standard appliance connectors
• Coating: Silicone conformal coating on entire board

Structural Features:

• Single-sided or double-sided PCB with through-hole and SMD components.
• Multiple harness connection points (typically 10-14 connectors).
• Heat sink tabs for triac and relay components.
• Mounting holes for chassis screw fixation (4 points).

Working Principle:
The MCU executes firmware that sequences the wash program. It reads water level (pressure switch), temperature (NTC), door status (microswitch), and motor tachometer inputs. Based on the selected program, it activates outputs: water inlet valves → heater → motor → drain pump → door lock in the correct sequence and timing. The Aquastop input can trigger immediate water shut-off and drain activation on flood detection.

Key Advantages:

• Single board controls entire appliance — reduces wiring complexity.
• Conformal coated — moisture and corrosion resistant.
• Comprehensive diagnostics — speeds up repair.
• CE/VDE/UL certified — meets global safety standards.

Applicable Industries/Use Cases:
AEG LAVAMAT washing machines, appliance manufacturing, repair and servicing, OEM spare parts.

Installation Requirements:

• Install in dry control cavity of appliance.
• Connect all harness plugs completely — incomplete connection triggers error codes.
• Ground PCB mounting bracket to chassis.
• Use exact part number — 120-166-006 — do not substitute.

Usage Precautions:

• ESD-sensitive — handle by edges, wear grounded wrist strap.
• Disconnect mains before installation.
• Do not expose to direct water.
• Firmware updates only via authorized AEG service tools.