Is error HVAC-LV-PROT a fault or a warning?

HVAC-LV-PROT is a fault code: the ESS unit enters protection and stops normal operation until it is cleared.

HVAC-LV-PROT

Felicity ESS error HVAC-LV-PROT

Low voltage protection fault

Fault — the ESS unit enters fault protection and stops normal operation until the fault is cleared — how it is shown (LED pattern or display code) depends on the model.

FLS-ES232LC-S

Energy storage systemFault

What it means

Low voltage protection fault

Cause: Leakage of fluorine or insufficient refrigerant; filter drier clogging; thermal expansion valve failure; water flow rate too low.

How to fix it

Leak check and replenish refrigerant; replace filter drier; check expansion valve and temperature sensing package; fix water system.

Source: FLS-ES232LC-S.pdf

Frequently asked questions

What does error HVAC-LV-PROT mean on a Felicity ESS?: HVAC-LV-PROT means: Low voltage protection fault. Leakage of fluorine or insufficient refrigerant; filter drier clogging; thermal expansion valve failure; water flow rate too low.
Is error HVAC-LV-PROT a fault or a warning?: HVAC-LV-PROT is a fault code: the ESS unit enters protection and stops normal operation until it is cleared.
How do I clear or fix error HVAC-LV-PROT?: Leak check and replenish refrigerant; replace filter drier; check expansion valve and temperature sensing package; fix water system.

Related error codes

Other codes on the FLS-ES232LC-S

All FLS-ES232LC-S codes

Prefer the full written guide? Read the complete Felicity inverter error-code guide

Compiled from official Felicity user manuals. Always consult your device manual and a qualified technician before performing repairs.