Dryer trips the household circuit breaker or RCD during or shortly after starting.

Safety first: Do not repeatedly reset a tripping breaker. Unplug the dryer and leave the breaker off until the fault is identified.

• Inspect power cord: Check for cuts, burns, or crushed sections. Replace if damaged.
• Check for moisture: Look for signs of water leaks inside the dryer, especially near the heater, motor, and PCB. Dry thoroughly and fix any leaks.
• Test heater to ground: With the dryer unplugged, disconnect the heater and measure resistance between each heater terminal and the chassis. Any continuity indicates a shorted element that must be replaced.
• Inspect motor and wiring: Check for burned insulation or wires touching the cabinet. Repair or replace as needed.
• Professional testing: If the cause is not obvious, have a qualified technician perform insulation resistance tests.