Heavy over load or output short
Also displayed as F34 on some models.
Fault — the inverter cuts its output and the red LED stays solid until the fault is cleared.
The exact meaning depends on your model:
Also applies to:IVPS5048P1G1-LVIVPS7548P2G1IVPS10048P2G1IVPS3.5~10kVA-USIVPS3-5-10KVA
Heavy over load or output short — The output is heavily overloaded or short-circuited.
Cause: A heavy overload or a short circuit is present on the AC output.
Refer to the handling for fault 13 (overload) and fault 15 (output short).
Source: IVPS3524P1G1-LV IVPS5048P1G1-LV IVPS7548P2G1 IVPS10048P2G1 User Guide - EN.pdf, p.25
Also applies to:IVCM2024 PROIVCM3024 PRO
Radiator 1 over-temperature — Overtemperature occurs in radiator 1.
Cause: Inverter internal temperature has exceeded the safe operating threshold. Causes include high ambient temperature, blocked cooling vents, failed cooling fan, or installation in direct sunlight.
Check whether the air flow of the unit is blocked or whether the ambient temperature is too high.
Source: ICM.pdf, p.14
Also applies to:IVGM6KL-P1G1IVGM7K6L-P1G1IVGM8KL-P1G1
Grid Under Voltage Alarm — Grid voltage is too low, check if the grid voltage is within the normal range.
Cause: The grid voltage measured at the AC terminals is below the inverter's permitted operating window, so it alarms and holds off grid-tied operation until the voltage recovers.
Check if the grid voltage is within the normal range.
Source: Felicitysolar IVGM Series Hybrid inverter Instruction Manual.pdf, p.51
Also applies to:T-REX-3K6LP1G01T-REX-4KLP1G01T-REX-4K6LP1G01T-REX-5KLP1G01T-REX-6KLP1G01T-REX-10KHP3G01
Over temperature happen at heat sink
Cause: Inverter internal temperature has exceeded the safe operating threshold. Causes include high ambient temperature, blocked cooling vents, failed cooling fan, or installation in direct sunlight.
Check whether the ambient temperature is too high.
Source: T-REX-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf, p.38 · T-REX-10KHP3G01-Inverter-User-Guide.pdf, p.29
Also applies to:IVEM12048-IIIVEM 8K-12K Series II
DC/DC hardware overflows
Cause: DC/DC converter hardware overflow.
Restart the unit, if the eror happens again, contact the repair center.
Source: IVEM8K-12K-II_compressed.pdf, p.44
Over temperature happen at heat sink
Cause: Ambient temperature is too high.
Check whether the ambient temperature is too high.
Source: T-REX-10KLP3G01-Inverter-User-Guide.pdf, p.28
Also applies to:Apollo-5KLP1G01-M1Apollo-5KLP1G01-M2Apollo-4K6LP1G01-MXApollo-4K6LP1G01-M1Apollo-4K6LP1G01-M2
Over temperature happen at heat sink — Over temperature condition at the heat sink.
Cause: Over temperature happen at heat sink.
Check whether the ambient temperature is too high.
Source: Apollo-5KLP1G01-All-in-one-ESS-User-Guide.pdf, p.43
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.