Board Dimensions: 280 mm × 195 mm × 35 mm (approximate)

Material Composition:

• Substrate: FR-4 Glass Fiber Epoxy Laminate
• Trace Material: Copper, 1 oz/ft²
• Solder: Lead-free SAC305 (Sn96.5/Ag3.0/Cu0.5)
• Conformal Coating: Silicone-based protective coating

Key Components on Board:

• Microcontroller: 32-bit ARM Cortex-M series MCU
• Triac Drivers: For motor speed control and water valve actuation
• Relay Outputs: 3 × 16A relays (motor, heater, water valve)
• Input Connectors: Door lock sensor, water level pressure switch, temperature sensor (NTC 10kΩ)
• Display Driver: 7-segment LED / LCD interface

Operating Voltage: 5V DC (logic) / 230V AC (power section, isolated)

Operating Temperature Range: -10°C to +85°C

Function: Controls all washing machine operations including water fill, temperature regulation, drum rotation speed, program sequencing, and user interface response.

Installation Requirements:

• Disconnect mains power before installation
• Connect all ribbon cables and plug connectors in correct orientation — connector keying prevents reverse insertion
• Mount to chassis using 4 × M4 screws with vibration-dampening grommets
• Verify all connections with multimeter before powering on

Usage Notes:

• ESD-sensitive component — handle with anti-static wrist strap
• Do not expose to moisture during installation
• If board fails, it must be replaced as a complete unit — individual component repair is not supported