: The most common reason the reset "doesn't work" is timing. The cycles must be performed quickly enough to stay within the 4-minute window, but you must wait for the LEDs to actually start blinking before turning the switch off again. FusionSolar
If the default password does not work, follow these steps precisely to restore the password to its initial state. This must be completed when the inverter has both AC and DC power. Resetting Password - SUN2000-(3KTL-10KTL)-M1 User Manual
Many guides skip this, but you must attempt the "Forgot Password" flow inside the or Inverter WebUI before trying hard resets.
Always register the inverter under your FusionSolar installer account. That way, if you forget the local password, you can remotely reset it via the cloud — no truck roll needed.
: The most common reason the reset "doesn't work" is timing. The cycles must be performed quickly enough to stay within the 4-minute window, but you must wait for the LEDs to actually start blinking before turning the switch off again. FusionSolar
If the default password does not work, follow these steps precisely to restore the password to its initial state. This must be completed when the inverter has both AC and DC power. Resetting Password - SUN2000-(3KTL-10KTL)-M1 User Manual
Many guides skip this, but you must attempt the "Forgot Password" flow inside the or Inverter WebUI before trying hard resets.
Always register the inverter under your FusionSolar installer account. That way, if you forget the local password, you can remotely reset it via the cloud — no truck roll needed.
