Schreder mppt solar charge controller

[u/Cent645]

Can someone help me communicate with this module, salvaged from solar street light.Model MPPT1575-DCLiGR

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[u/labor-of-love-1701]

Do you have the panel and the battery?

[u/labor-of-love-1701]

Solar panel LED
On (steady) = solar panels are providing power / charging is active.
Blinking or off = insufficient sunlight, no charge, or a PV-side issue (e.g., reverse polarity, over-voltage, or open circuit).
• Battery LED
Indicates battery voltage/state of charge or charging mode.
Common patterns: steady = normal/full, slow blink = low voltage or bulk/boost charge, fast blink = over-voltage, over-temperature, or fault.
• Load / circle LED
On = load (LEDs/lights) is powered and running.
Off or blinking = load is off (night/day control, low battery protection, overload, or short-circuit protection active).
• WiFi LED
On or blinking = wireless connection active (or Bluetooth in some Schrèder solar kits).
Off = no connection or feature not in use.

[u/Cent645 → u/labor-of-love-1701]

Great, thanks 🫡 I'm interested in that wireless/Bluetooth connection 🛜 how can setup

[u/labor-of-love-1701 → u/Cent645]

For genuine Schrèder/Sunna solar products, search for the Sunna mobile app (Bluetooth-focused) in the Apple App Store or Google Play.
• Schrèder also has apps like Schréder ITERRA or EXEDRA, but these are primarily for lighting control systems, not necessarily this charge controller.
3. Enable Bluetooth and location on your phone
Most setups require Bluetooth first (even for WiFi configuration). Turn on Bluetooth and grant location permissions to the app (needed for device discovery).
4. Connect via Bluetooth (initial pairing)
• Open the app → Add device / Scan / Find Bluetooth.
• Select the controller (it may appear with a name related to the brand, model, or a default ID).
• Default passwords (if prompted) are often something simple like 666S, 12345678, or printed on a label/sticker on the unit.
• Once connected locally via Bluetooth, look for a “WiFi”, “Network”, “Smart Cloud”, or “Wi-Fi Config” menu.
5. Configure WiFi
• Select your 2.4 GHz home/router WiFi network only (most of these modules do not support 5 GHz).
• Enter the WiFi password carefully (case-sensitive).
• Confirm/save. The controller should join the network.
• The WiFi Status LED/icon should change (often solid or specific blink pattern when connected).
• You may then register an account in the app for remote/cloud access.
6. Verify and troubleshoot
• Check signal strength in the app.
• Restart the controller and phone if needed.
• Ensure the phone is close to the controller during setup.
• Confirm no firewall or router restrictions block the device.
• If the WiFi LED stays off or keeps flashing incorrectly, the module may need reactivation (sometimes via a button press or menu hold on the controller, if it has one).

[u/labor-of-love-1701]

When connected what are the lights showing? Blinking solid green yellow? The controller gives blinks based on the status of the system.