TemperatureLowCritical #

Meaning #

The temperature in a room has dropped below 18 degrees Celsius for the past 30 minutes. This is a critical threshold requiring immediate action to prevent health risks and equipment damage.

Impact #

Temperature below 18 degrees Celsius poses immediate health risks to occupants, including hypothermia and respiratory issues. Electronic equipment may also malfunction or shut down in cold conditions.

Diagnosis #

Check the current temperature readings from all Shelly H&T sensors:

shellyht_temperature_celsius

Identify which specific rooms or sensors are affected:

kubectl get pods -n iot -l app.kubernetes.io/name=shelly-ht-monitor -o yaml

Look for any recent events that may have caused the drop, such as heating system failures, windows left open, or sudden weather changes.

Mitigation #

Turn up the heating immediately to increase room temperature. Check if heating systems are functioning properly and if there are any drafts or cold spots in the room.

Consider using additional heating sources such as space heaters or heated blankets if the central heating system is not sufficient. Check for open windows or doors that may be allowing cold air to enter. If the heating system has failed, contact building maintenance for emergency repairs.