: The controller saves the 10 most recent faults , allowing technicians to diagnose recurring issues.
If there is no logo on the front, you may need to remove the controller from the wall (ensure power is off first). On the back of the circuit board, there is often a sticker with a model number. It might look something like KJR-120B or ZL-5058 . aircon l1 controller manual pdf
Searching for an "Aircon L1 Controller Manual PDF" on Google Images might give you a picture of the remote layout, but that is insufficient. The official PDF manual provides: : The controller saves the 10 most recent
Check for blockages in air/water flow or sensor calibration. Emergency Stop Actuated It might look something like KJR-120B or ZL-5058
via code-level settings, allowing it to be toggled based on external pin signals (e.g., pins 23+31). Maintenance Alerts: