The error code E4 on your BRANDY BEST BLACK6D dishwasher indicates an overflow or excess water in the tub, usually due to a leak within a component of the dishwasher (pipes, seals, valve, etc.). This is a serious issue that requires immediate action to prevent water damage.
Immediate actions to take: If the appliance displays this code, the first thing to do is to turn off the water supply at the main tap or at the dishwasher's supply tap before attempting any diagnosis. Then, carefully open the door if water has accumulated, and drain the standing water using a mop or a bucket.
Technical checks: Once the appliance is secured, visually inspect the inlet and drain hoses for any leaks, cracks, or damaged seals. Also, check that the hoses are not kinked or blocked, as poor drainage can cause overflow. On the BRANDY BEST BLACK6D, the removable filter should be cleaned regularly to avoid blockages that can compromise proper drainage and lead to water accumulation (normal consumption: 9 liters per cycle).
Door seal and anti-overflow system: Check the condition of the door seal. A worn, cracked, or improperly positioned seal allows water to escape during the wash cycle. The dishwasher is equipped with an anti-overflow safety system that triggers error E4 when it detects excess water, which means this system is functioning correctly but there is a real leak to locate.
Restart and diagnosis: After addressing the standing water and inspecting visible components, unplug the dishwasher for 2 to 3 minutes to reset the electronic system. Plug it back in and start a quick cycle (the BRANDY BEST BLACK6D offers one) to check if the error reappears. If it persists, this confirms a leak that requires professional intervention.
Given the complexity of diagnosing a leak (identifying the faulty component, replacing seals or parts) and the risks of further damage, we recommend contacting a professional or customer service (your dishwasher comes with a 2-year warranty). Do not attempt to force the start of a cycle until the source of the leak has been identified and corrected.