| Date | Operational? | Description/reason | Last updated by |
|---|---|---|---|
| May 21, 2025, 4:01 p.m. | No | IFS-125HR failure | yao-veng.te |
| July 28, 2024, 10:16 a.m. | Yes | Operational | yao-veng.te |
| July 25, 2024, 1:29 p.m. | No | Site/campus not accessible between July 24th and 27th, 2024 | yao-veng.te |
| May 31, 2023, 2:46 p.m. | Yes | Operational | yao-veng.te |
| Dec. 7, 2022, 2:18 p.m. | No | The first and second mirrors (flat and spherical) to focus the solar beam on the entrance aperture are damaged and need to be replaced | yao-veng.te |
| Oct. 9, 2022, 1:15 p.m. | No | Xluft out of nominal range | yao-veng.te |
| Sept. 21, 2022, 10:09 a.m. | Yes | Operational | yao-veng.te |
| Aug. 13, 2022, 7:37 a.m. | No | Absence of staff requires short shut down. Anticipated restart after August 16, 2022. | christof.janssen |
| July 8, 2022, 3:37 p.m. | Yes | Operational only during working days | yao-veng.te |
| July 1, 2022, 5:10 p.m. | No | Dome automatic opening failure. Operational only on working days. | yao-veng.te |
| June 13, 2022, 4:10 p.m. | Yes | Operational only during working days | yao-veng.te |
| June 10, 2022, 9:53 p.m. | No | Dome automatic opening failure. Operational only on working days. | yao-veng.te |
| June 9, 2022, 2:50 a.m. | Yes | Operational only during working days | yao-veng.te |
| June 3, 2022, 5:22 p.m. | No | Dome automatic opening failure. Operational only on working days. | yao-veng.te |
| May 30, 2022, 9:38 a.m. | Yes | Operational only during working days | yao-veng.te |
| May 25, 2022, 3 p.m. | No | Dome automatic opening failure. | yao-veng.te |
| May 16, 2022, 2:20 p.m. | Yes | Operational only on working days | yao-veng.te |
| May 13, 2022, 4:10 p.m. | No | Dome automatic opening failure. Operational only on working days. | yao-veng.te |
| May 9, 2022, 9:10 a.m. | Yes | Operational only during working days | yao-veng.te |
| May 6, 2022, 1:33 p.m. | No | Down for the weekend | christof.janssen |
| April 19, 2022, 10:46 a.m. | Yes | Operational only on working days | yao-veng.te |
| April 15, 2022, 2:35 p.m. | No | Dome automatic opening failure. Operational only on working days. | yao-veng.te |
| Feb. 17, 2022, 5:27 p.m. | Yes | Nominal | yao-veng.te |
| Feb. 15, 2022, 3:58 p.m. | No | Replacement of the sun-tracker dome | yao-veng.te |
| Aug. 30, 2021, 8:44 a.m. | Yes | Nominal | yao-veng.te |
| Aug. 18, 2021, 7:42 a.m. | No | instrument unattended | christof.janssen |
| July 20, 2021, 4:22 p.m. | Yes | christof.janssen | |
| July 20, 2021, 4:21 p.m. | Yes | christof.janssen | |
| May 20, 2020, midnight | Yes | FTS & Tracker are working well | yao-veng.te |
| March 16, 2020, midnight | No | OFF due to the university/laboratory access restriction (COVID-19) | yao-veng.te |
| Nov. 4, 2019, midnight | Yes | FTS & Tracker are working well | yao-veng.te |
| Aug. 26, 2019, midnight | No | Laser failure | yao-veng.te |
| Aug. 2, 2019, midnight | Yes | FTS & Tracker are working well | christof.janssen |
| July 23, 2019, midnight | No | OFF | yao-veng.te |
| April 29, 2019, midnight | Yes | FTS & Tracker are working well | yao-veng.te |
| July 26, 2018, midnight | Yes | FTS & Tracker are working well | yao-veng.te |
| July 13, 2018, midnight | Yes | FTS & Tracker are working well | yao-veng.te |
| June 21, 2018, midnight | Yes | FTS & Tracker are working well | yao-veng.te |
| May 7, 2018, midnight | Yes | FTS & Tracker are working well | yao-veng.te |
| Jan. 29, 2018, midnight | No | Sun tracker update | yao-veng.te |
| April 20, 2017, midnight | Yes | FTS & Tracker are working well | yao-veng.te |
| Nov. 28, 2016, midnight | No | Sun tracker failure | yao-veng.te |
| Aug. 16, 2016, midnight | Yes | back to normal operation | christof.janssen |
| July 29, 2016, midnight | No | OFF until the 2016/08/16 | pascal.jeseck |
| June 22, 2016, midnight | Yes | FTS & Tracker are working well | yao-veng.te |
| May 3, 2016, midnight | No | Sun tracker failure | yao-veng.te |
| June 22, 2015, midnight | Yes | FTS & Tracker are working well | yao-veng.te |
| April 18, 2013, midnight | No | Just getting started. | yao-veng.te |
| April 12, 2013, midnight | No | Just getting started. | dwunch |