Fault

F34

Over temperature happen at heat sink.

4 Devices that report this code

What does the F34 error code mean?

F34 on a Felicity unit indicates: Over temperature happen at heat sink.. It is a fault-severity event that can appear on 4 different devices in the Felicity catalog. The same code may have slightly different recommended fixes depending on the device — the per-device sections below show the exact wording from each device's official manual.

This is a fault-severity code

Fault codes stop normal operation but the unit may attempt to recover. Common causes are out-of-range conditions (voltage, current, temperature) that require checking inputs and outputs before restart.

What triggers this code

F34 is triggered when the unit's protection or monitoring logic detects the specific condition described above. The exact trigger depends on the device — see the per-device sections for the official manual entry for each.

Apollo-5KLP1G01-MXEnergy storage system↗ view on device
F34Over temperature happen at heat sink.Fault
Description

Over temperature condition at the heat sink.

Cause

Over temperature happen at heat sink.

Recommended fix

Check whether the ambient temperature is too high.

Source:Apollo-5KLP1G01-All-in-one-ESS-User-Guide.pdf · page 43
IVEM8048-IIInverter↗ view on device
F34DC/DC hardware overflows.Fault
Description

Fault: DC/DC hardware overflows.

Cause

DC/DC converter hardware overflow.

Recommended fix

Restart the unit, if the eror happens again, contact the repair center.

Source:IVEM8K-12K-II_compressed.pdf · page 44
T-REX-10KHP3G01Inverter↗ view on device
F34Over temperature happen at heat sink.Fault
Description

Heat sink over temperature.

Recommended fix

Check whether the ambient temperature is too high.

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 29
T-REX-10KLP3G01Inverter↗ view on device
F34Over temperature happen at heat sink.Fault
Description

Over temperature happen at heat sink.

Cause

Ambient temperature is too high.

Recommended fix

Check whether the ambient temperature is too high.

Source:T-REX-10KLP3G01-Inverter-User-Guide.pdf · page 28

Frequently asked about F34

What is the F34 error on Felicity?
F34 on a Felicity unit means: Over temperature happen at heat sink.. It can appear on 4 different devices in the Felicity catalog. The cause and recommended fix are listed for each device on this page.
Can I clear the F34 code myself?
It depends on the severity. Warning-level codes can usually be cleared by following the recommended fix. Fault and critical codes often require checking the source condition first; if the code returns immediately after restart, escalate to authorized service.
Is the F34 fix the same on every device?
The cause is consistent — it's the same protection logic. The exact fix wording can differ per device because each official manual addresses model-specific context (input ranges, parallel-config notes, firmware revisions). Use the per-device section that matches your unit.
Where does this information come from?
Every entry is sourced directly from the official Felicity user manual for the affected device. The "Source" line at the bottom of each device's section shows the manual filename and page number.

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