Board Type: Multi-layer PCB, 4-layer design

Dimensions: 310 mm × 220 mm × 40 mm (approximate)

Material Composition:

• PCB: FR-4, TG150 grade
• Components: SMD and through-hole mixed technology
• Connector Housing: PA66 GF30 Nylon
• Potting Compound: Epoxy resin (select sections for moisture protection)

Key Specifications:

• Processor: 32-bit RISC MCU, 80 MHz clock speed
• Memory: 256 KB Flash + 64 KB SRAM
• Input Channels: 12 digital inputs, 4 analog inputs (NTC thermistors, pressure switch)
• Output Channels: 6 triac outputs, 4 relay outputs, 2 PWM outputs
• Communication Interface: I²C bus for display module, UART for diagnostic port

Operating Voltage: 3.3V DC (logic) / 230V AC (power, galvanically isolated via optocouplers)

Function: Serves as the central brain of the washing machine. Executes all program logic, manages motor inverter communication, controls water inlet valves, monitors temperature and water level, drives the user display, and logs error codes.

Working Principle: Receives user input via the control panel → processes program algorithm from firmware stored in Flash memory → sends commands to actuators (motor, valves, heater, pump) → monitors feedback from sensors → adjusts operations in real time.

Installation Requirements:

• Zero energy state required — disconnect mains and wait 5 minutes for capacitor discharge
• Connect main power harness (5-pin) and motor communication cable (4-pin)
• Mount using vibration-isolating rubber grommets on 4 mounting points
• Perform self-test diagnostics after installation before first use

Usage Notes:

• This board contains no user-serviceable components
• Firmware is pre-programmed at factory — do not attempt to reflash without authorized tools
• Store in anti-static bag if not installing immediately
• Operating ambient temperature: 0°C to +40°C