Failure of aircon unit #2

We will provide more details in a planned post-mortem. Temperatures throughout the data hall are stable since the incident happened in the morning, meaning redundancy works as intended. We observe a operational temperature range of about 25.4°C median across all cabinet cold aisle inlet sensors. On-Site engineers monitoring the situation until we have switched back thermal loads to free cooling later in the day. We will leave cold air supply increased, until repair operations are finished.

For the upcoming week, we expect the pipe construction company to finish welding works on our new cold water loop network. The same supplies our in-house engineered cooling solution called deltaflow, offering advanced cooling output.

On-Site engineers still monitoring the situation while the unit is out of service and being repaired.

The unit is currently out of service due to a triggered security valve on the refrigeration circuit, likely causing impact to the refrigeration loop. We're cooling the datacenter with the working cooling units and have informed the maintenance company about the same.

On-Site engineers investigating a current issue with aircon unit #2 appearing to be a electrical problem with the outside unit (condensor). We have temporarily increased supply temperature on other units to stabilize cold aisle temperature.