11/11/25 - Completed a full heating maintenance on one furnace and two RTU’s. The filters were changed and proper operation was tested. The furnace and the RTU ending in 2560 were both running well, they were both in good condition, and they both had no issues at this time. Lastly, the RTU ending in 6372 is currently not heating at this time, the ignition board is burnt. It will need to be replaced, and it may also need to be diagnosed further to determine the cause of the burning or for any other issues, until then the unit will not be heating.