Multicooker will not start a cooking program and displays H01 on the screen.

Safety first: Unplug the multicooker before inspecting the lid mechanism. Never bypass safety switches.

• Check lid closure: Open and close the lid several times. Make sure it clicks firmly into the locked position. Remove any food residue or rice stuck around the latch area.
• Inspect the lid latch: Look at the plastic/metal latch hook on the lid and the catch on the body. If bent, cracked, or loose, the lid may not press the lid switch fully.
• Clean the switch area: With the unit unplugged, use a soft brush or cotton swab to remove debris around the lid switch actuator (usually a small plastic pin or tab that presses a hidden microswitch).
• Test for intermittent contact: Plug the unit back in, gently press down on the lid above the latch and try starting a program. If it works only when pressing, the lid switch or latch is misaligned or worn.
• Repair/replace: If the latch is broken, replace the Panasonic lid latch assembly. If the switch does not click or feels loose, replace the lid-closed microswitch or the lid switch harness. This usually requires removing the top cover screws from the underside of the lid and body.