Carpet cleaner will not start; display shows E1 immediately after pressing the power button.

Safety first: Unplug the Philips carpet cleaner from the wall outlet before any inspection. Never work on a live appliance.

• Check wall outlet and plug fuse: Test the outlet with another appliance. If the outlet works, remove the plug fuse (if applicable in your region) and test/replace it with the same rating.
• Inspect power cord: Look along the entire Philips power cord for cuts, kinks, burn marks, or crushed sections. If you see damage, the cord set must be replaced; do not tape or splice it.
• Test the power switch: Remove the top housing (usually Torx or Philips screws under the tank and handle). Locate the main rocker/push power switch. With a multimeter set to continuity, verify that the switch closes (0 Ω) when ON and is open when OFF. Replace the switch if it does not change state.
• Check main PCB input: On models with an electronic control board, visually inspect the main PCB for burnt components or cracked solder joints near the AC input connector. If there is visible damage or if the fuse on the PCB is open, the board typically must be replaced as a complete assembly.
• Reassemble and test: Refit all covers, ensure the tanks and handle are correctly seated, then plug in and test. If E1 persists after cord and switch are confirmed good, the main PCB is likely faulty and should be replaced by a qualified technician.