Sterra S — Cold Room and Warm Icons with Volume Icons Lit on Touch PanelUpdated 2 hours ago
If your Sterra S touch panel is showing every icon (Cold, Room, Warm, and all Volume sizes) lit up at once, the machine has entered a System Firmware Lockout. This is a protective mode that happens when the internal computer detects a minor voltage fluctuation or a sensor overload.
Please follow these steps to clear the system lock and restore normal operation:
1. The Hard Power Reset (Most Common Fix)
Because the touch panel is frozen in an "all-on" state, the standard power button may not respond. You need to perform a complete electrical drain:
Turn off the main power switch located at the back of the Sterra S.
Unplug the power cord entirely from the wall outlet.
Wait for 60 seconds. This 60-second window is crucial—it allows the internal circuit boards to drain all stored power and clear the "stuck" firmware memory.
Plug the machine back into a direct wall outlet (avoid power strips or extension cords) and flip the rear switch back to ON.
2. Inspect the Ventilation Filter
A locked panel can sometimes be triggered by the cooling system trying to protect itself from overheating.
Slide the dust filter out from the back of the machine.
Rinse it under cool running water to clear away dust or pet fur.
Important: Ensure the filter is 100% dry before sliding it back in. A damp filter can trap moisture near the internal electronics.
3. Check for "Air Gap" Ventilation
Make sure your Sterra S isn't pushed too tight against a wall or cabinet. If the machine cannot release the heat generated by its cooling compressor, it will trigger an internal safety lock, causing the panel to light up as an error warning. Ensure there is at least 10–15 cm of open space around the back and sides.
Still Seeing All Lights On?
If you have completed the 60-second power drain and the panel still displays every icon simultaneously, the internal motherboard has likely encountered a persistent logic error.
Please contact our Live Support Team. Let them know you have completed the "60-Second Power Drain Reset,"
Log in to our Customer Support Portal.
Submit a support ticket describing the issue.
Attach a short video (at least 1 minute long) showing the error happening. This will help our technical team diagnose and resolve the issue much faster for you.
Thank you for your patience, and we look forward to getting this sorted out!