Bush dryer displays E09 and will not start or stops unexpectedly; sometimes accompanied by no display backlight or erratic behaviour.

Safety first: Disconnect the dryer from the mains before opening any covers. Capacitors on the PCB can retain charge; avoid touching bare solder joints.

• Check mains supply: Confirm the wall socket is supplying correct voltage by testing with another appliance. Avoid extension leads where possible.
• Inspect the control board connections: Remove the top cover and control panel to access the main PCB. Ensure all multi-pin connectors are fully seated and free from corrosion or burning.
• Look for visible PCB damage: Examine the board for burnt areas, swollen capacitors, or cracked solder joints. Any obvious damage usually means the board must be replaced.
• Check earth and neutral connections: Ensure the earth wire and neutral connections are tight at the terminal block.
• Reset attempt: Some Bush models respond to a power reset. Leave unplugged for 10–15 minutes, then reconnect and try again. If E09 returns immediately, the PCB is likely faulty.
• Board replacement: If you are competent and the board is clearly faulty, you can replace it like-for-like, transferring any configuration jumpers. Otherwise, contact a qualified technician.