Skip to main content

I have a Sungrow, Solax or Tesla system. Where do I start with the app and Wi-Fi?

Short answer. Each brand has its own app: iSolarCloud for Sungrow, SolaXCloud for Solax and the Tesla app for Powerwall. All of them need your home Wi-Fi on 2.4 GHz. If one has dropped offline after a router change, start with the checks below, then call us. We install and service these brands as well as Sigenergy and GoodWe.

Our main guides cover Sigenergy and GoodWe. This page is a short starting point for our other battery brands, using the manufacturers’ own documents. Each brand’s official instructions for changing Wi-Fi involve its own dongle or switch, so we point you to the official page and ask you to call us rather than copy the steps.

Safety first. Do not press buttons on dongles, open covers or flip the unit’s switches. Never open a switchboard, remove a cover from your battery or inverter, or touch any wiring. Anything beyond the app, a light you can read from a safe distance, or your own router is a job for a licensed electrician. If you see smoke, smell burning, hear arcing or see water on or near the unit: keep everyone away, switch off at your main switch only if it is safe to do so, and call 000 if there is any fire or smoke.

Sungrow

  • App: iSolarCloud. Your plant is created when we commission it.
  • Sungrow’s WiNet communication module has RUN, WLAN and LAN lights, and a multi-function button. Read the lights, but do not press the button: its presses change the module settings.
  • Sungrow says the Wi-Fi signal should be strong enough at the module (stronger than -70 dBm), and gives moving the router closer, removing obstacles and adding a repeater as fixes.
  • Enable the router’s 2.4 GHz network.

Solax

  • App: SolaXCloud. A Wi-Fi icon in the app means the device is connected to the cloud.
  • Solax’s Pocket WiFi dongle has a status light whose colours differ between versions (for example green steady for all connections normal on one version, and red or flashing patterns for router, inverter or server problems). Check your dongle’s own manual rather than guess.

Tesla Powerwall

  • App: the Tesla app.
  • Tesla says Powerwall 3 supports 2.4 GHz networks. Tesla’s own steps for reconnecting Powerwall 3 involve pairing over Bluetooth and its on-unit switch, which we do not ask owners to use.

What to check first, for any brand

  1. Is your internet working on other devices?
  2. Did you change the router, network name or password?
  3. Is it a 2.4 GHz network?
  4. Restart your own router and wait a few minutes.
  5. If it is still offline, call us with the brand, a photo of the lights and a screenshot of the app.

Read more: Sungrow, Solax and Tesla batteries from Sun Connect Solar, Sungrow batteries and Tesla Powerwall

Dedicated owner guides

When to call us

If we installed your system, call us on 0483 903 020. Our service help for existing customers is free: we start by working through it with you by phone. If you are not yet a customer, a service call is $250 + GST, which covers one hour on site within 20 km of Mullumbimby; travel further out is quoted separately. Contact us or call 0483 903 020 (Mon-Fri 7am-6pm, Sat 7am-4pm).

Quick questions

Which app do I use for Sungrow?

iSolarCloud.

Which app do I use for Solax?

SolaXCloud.

Will a Tesla Powerwall work offline?

Tesla’s own support pages cover connectivity. A system that is offline cannot be seen in the app, and Powerwall behaviour in outages depends on the set-up, so ask us about yours.

Can you service systems you did not install?

We do not repair systems we did not install. If we installed it, call us.

Sources

Last checked 6 October 2026. Only the manufacturer’s, the network’s or the government’s own documents are used; app menus change between versions, so if your screen looks different, call us rather than guess.

Related guides

Check Your Battery Rebate & 0% Loan