What does error HVAC-PUMP-FAIL mean on a Felicity ESS?

HVAC-PUMP-FAIL means: Circulating water pump does not start or operates improperly. Power off, loose circuit connection, damaged water pump, or air in cooling medium / no cooling medium.

Is error HVAC-PUMP-FAIL a fault or a warning?

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

HVAC-PUMP-FAIL

Felicity ESS error HVAC-PUMP-FAIL

Circulating water pump does not start or operates improperly

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

Circulating water pump does not start or operates improperly

Cause: Power off, loose circuit connection, damaged water pump, or air in cooling medium / no cooling medium.

How to fix it

Check main power switch; tighten circuit connector; replace damaged water pump; evacuate air or replenish cooling medium.

Source: FLS-ES232LC-S.pdf

Frequently asked questions

What does error HVAC-PUMP-FAIL mean on a Felicity ESS?: HVAC-PUMP-FAIL means: Circulating water pump does not start or operates improperly. Power off, loose circuit connection, damaged water pump, or air in cooling medium / no cooling medium.
Is error HVAC-PUMP-FAIL a fault or a warning?: HVAC-PUMP-FAIL 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-PUMP-FAIL?: Check main power switch; tighten circuit connector; replace damaged water pump; evacuate air or replenish cooling medium.

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.