19: Current detection fault (ItE)
20: Motor autotuning fault (tE)
21: EEPROM operation fault (EEP)
22: PID feedback offline fault (PIDE)
23: Reserved
24: Running time reached (END)
25: Electronic overload (OL3)
26: Panel communication error (PCE)
27: Parameter upload error (UPE)
28: Parameter download error (DNE)
29–31: Reserved
32: To-ground short circuit fault 1 (ETH1)
33: To-ground short circuit fault 2 (ETH2)
34: Speed deviation fault (dEu)
35: Mal-adjustment fault (STo)
36: Underload fault (LL)
37: Reserved
38: Phase sequence fault (PSF)
39: 3PH current imbalance of the fan (SPOF)
40: Fan overload (OLF)
41: Solenoid valve overcurrent (TOC)