Can I clear the 34 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 34 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.

Fault

34

Q: What does 34 mean on IVCM1012 PRO?

Overtemperature occurs in radiator 1. Recommended fix: Check whether the air flow of the unit is blocked or whether the ambient temperature is too high.

Q: What does 34 mean on T-REX-3KLP1G01?

Over temperature happen at heat sink. Recommended fix: Check whether the ambient temperature is too high.

Radiator 1 over-temperature.

3 Devices that report this code

What does the 34 error code mean?

34 on a Felicity unit indicates: Radiator 1 over-temperature.. It is a fault-severity event that can appear on 3 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

34 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.

IVCM1012 PROInverter↗ view on device

34Radiator 1 over-temperature.Fault

Description

Overtemperature occurs in radiator 1.

Recommended fix

Check whether the air flow of the unit is blocked or whether the ambient temperature is too high.

Source:ICM.pdf · page 14

IVGM5KL-P1G1Inverter↗ view on device

34Grid Under Voltage Alarm.Fault

Description

Grid voltage is too low, check if the grid voltage is within the normal range.

Recommended fix

Check if the grid voltage is within the normal range.

Source:Felicitysolar IVGM Series Hybrid inverter Instruction Manual.pdf · page 51

T-REX-3KLP1G01Inverter↗ view on device

34Over temperature happen at heat sink.Fault

Description

Over temperature happen at heat sink.

Recommended fix

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 · page 38

Frequently asked about 34

What is the 34 error on Felicity?: 34 on a Felicity unit means: Radiator 1 over-temperature.. It can appear on 3 different devices in the Felicity catalog. The cause and recommended fix are listed for each device on this page.
Can I clear the 34 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 34 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.