Delta LEKn fault code meaning

Delta / LEKn

Series: MP300

Water leakage warning

AC motor drive

Meaning:

Possible causes

Source: MPD_MP300 Series User Manual (DELTA_IA-MDS_MPD_UM_SC_20260326) P332

Series: VP3000-E, VP3000

Major water leakage warning

AC motor drive

Meaning: Triggered when major water leakage is detected.

Possible causes

Water pump outlet piping damaged
Pressure sensor error
Inspect and repair the pressure sensor.

Source: VP3000-E & VP3000-EHS User Manual (DELTA_IA-MDS_VP3000-E-VP3000-EHS_UM_SC_20260306) P490; VP3000 Series User Manual (DELTA_IA-MDS_VP3000_UM_TC_20250523) P526