Growatt Error 119: GFCI Device Damage
Error 119 means the Growatt's GFCI (Ground-Fault Circuit Interrupter), the protection that watches for leakage to ground, has itself reported a fault. Because this is a safety device, a persistent Error 119 should be checked rather than repeatedly reset. A couple of restarts can clear a one-off, but not a real fault.
What it usually means
- A transient that a restart clears.
- A genuine fault in the GFCI circuit on the inverter's board.
- A real ground-leakage condition the device caught (related to Error 201 and Error 203).
What to do, safely
- Restart two or three times. Turn off the AC breaker, then the DC isolator, wait 5 minutes, and restart. A one-off Error 119 can clear this way.
- If it keeps returning, stop. Repeatedly clearing a ground-fault protection defeats its purpose.
- Contact your installer or Growatt. They check for a real ground fault and confirm whether the GFCI circuit or board needs service.
When to bring in a professional
Error 119 involves ground-fault protection, a safety function. If it returns after a few restarts, have it inspected rather than continuing to reset it.
Related Growatt codes
Sources
- Growatt inverter user manual and error-code reference (Error 119 = GFCI device damage; restart 2-3 times, request maintenance if it continues).
- Growatt installer documentation.
⚠️ Safety disclaimer. Error 119 involves ground-fault protection. Solar inverters carry lethal DC and AC voltage. This guide covers a safe power cycle only. Ground-fault and board checks must be done by a licensed installer or Growatt technician.