Fault

09

Fan 2 locked.

5 Devices that report this code

What does the 09 error code mean?

09 on a Felicity unit indicates: Fan 2 locked.. It is a fault-severity event that can appear on 5 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

09 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.

09Fan 2 locked.Fault
Description

Fan 2 is locked.

Recommended fix

Check if the Fans wiring connected well. Replace the fan.

Source:ICM.pdf · page 13
09High Cell Temperature.Warning
Description

Battery cell temperature has exceeded safe operating limit.

Cause

Cell overheating due to high ambient temperature or high current operation.

Recommended fix

Stop charging and discharging, wait for the temperature to drop.

Source:LUX-X-96050HG01-Lithium-Battery-User-Guide.pdf · page 21
09High Cell Temperature.Warning
Description

Cell temperature is too high.

Recommended fix

Stop charging and discharging, wait for the temperature to drop.

Source:LUX-Y-48100HG01-Lithium-Battery-User-Guide.pdf · page 20
09High Cell Temperature.Fault
Description

High Cell Temperature.

Source:LUX-Y-48100HG01MN User manual 358-S010025-03 0325(V2.0).pdf · page 27
09Overload.Fault
Description

Overload.

Recommended fix

Reduce the loads.

Source:T-REX-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf · page 37

Frequently asked about 09

What is the 09 error on Felicity?
09 on a Felicity unit means: Fan 2 locked.. It can appear on 5 different devices in the Felicity catalog. The cause and recommended fix are listed for each device on this page.
Can I clear the 09 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 09 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.