ActronAir Drain Hose routes condensate from the indoor unit drain tray to the external drain point on AW12E/SWA12E wall split systems, ensuring reliable condensate removal that prevents water buildup and overflow damage to the indoor unit installation. A cracked or disconnected drain hose causes condensate to discharge inside the wall cavity, leading to mould growth and structural damage. Ensure power is isolated before accessing any indoor unit drainage components.