Fault
1 Devices that report this codeHVAC-LV-PROT
Low voltage protection fault.
HVAC-LV-PROTLow voltage protection fault.Fault
Cause
Leakage of fluorine or insufficient refrigerant; filter drier clogging; thermal expansion valve failure; water flow rate too low.
Recommended fix
Leak check and replenish refrigerant; replace filter drier; check expansion valve and temperature sensing package; fix water system.
Source:
FLS-ES232LC-S.pdfCompiled from official FelicityESS user manuals. Always consult your device manual and a qualified technician before performing repairs.