Philips dehumidifier or humidifier displays LO and does not operate normally.

Safety: No internal repair is usually required for LO; it is a protection indication.

• Check room temperature: Ensure the room is within the operating range specified in the Philips manual (typically above 5–10°C).
• Relocate unit: Move the appliance away from cold drafts, windows, or unheated areas.
• Power reset: Unplug for a few minutes, then plug back in and test.

If LO appears even in a warm room, the temperature sensor may be faulty and require replacement by a technician.