What does error 59 mean on a Felicity inverter?

It depends on the model — 2 devices use code 59. On the IVGM5KL-P1G1 it means: Gen Over Frequency Alarm. The card for each model on this page gives its exact meaning and fix.

How do I clear or fix error 59?

Check generator output frequency. The exact steps for each affected model are listed on this page.

Felicity inverter error 59 (F59)

Gen Over Frequency Alarm

Also displayed as F59 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:

IVGM5KL-P1G1

InverterFault

Also applies to:IVGM6KL-P1G1IVGM7K6L-P1G1IVGM8KL-P1G1

What it means

Gen Over Frequency Alarm — Generator frequency is too high, check whether the generator frequency is within the normal range.

Cause: The frequency measured at the generator input is above the permitted operating window, so the inverter alarms and will not qualify the generator until its frequency settles.

How to fix it

Check generator output frequency.

Source: Felicitysolar IVGM Series Hybrid inverter Instruction Manual.pdf, p.52

T-REX-50KHP3G01

InverterFault

What it means

Load overload 110% Fault — The load exceeds 110%, the load should be reduced.

Cause: The connected load has exceeded 110% of the inverter's rated output — the first overload tier; the load must be reduced.

How to fix it

Power down the inverter, wait 5 minutes for capacitors to discharge, then restart.
If the fault recurs immediately or repeatedly, record the exact code and contact your installer or the manufacturer's service line.

Source: T-REX-50KHP3G01-user-manual-.pdf, p.47

Frequently asked questions

What does error 59 mean on a Felicity inverter?: It depends on the model — 2 devices use code 59. On the IVGM5KL-P1G1 it means: Gen Over Frequency Alarm. The card for each model on this page gives its exact meaning and fix.
Is error 59 a fault or a warning?: 59 is a fault code: the inverter cuts its output and the red LED stays solid until it is cleared.
How do I clear or fix error 59?: Check generator output frequency. The exact steps for each affected model are listed on this page.

Related error codes

Other codes on the IVGM5KL-P1G1

All IVGM5KL-P1G1 codes

Other codes on the T-REX-50KHP3G01

All T-REX-50KHP3G01 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.