Sungrow BMS Fault 714 | Faisalabad, Lahore

Sungrow hybrid shows BMS Communication Fault (714) or Abnormal Battery Connection (716)

Short answer

Code 714 means the Sungrow hybrid cannot talk to the battery's management system (BMS). Code 716 means the battery power connection looks reversed or missing. Without the BMS link the battery may not charge, discharge or show its percentage. Sungrow notes a wrong communication cable at first install is a common cause.

What you will see

Battery shows no percentage or data in iSolarCloud
Code 714 or 716
Battery not charging or not giving backup

Why it happens

The inverter needs BMS data to charge safely. A loose or wrong cable, a battery that is switched off, a battery model that is not approved for that inverter, or mismatched firmware all break the link.

Diagram

Inverter and battery must talk

Linked

Battery BMSData

→

HybridCharges safely

No link

Battery BMSSilent

→

HybridCode 714

Common causes:

Wrong cableBattery offNot approved pairingFirmware

Applies to Sungrow SH-RS and SH-RT with lithium batteries.

What you can check yourself

Check that the battery is switched on and its own indicators look normal
Confirm the battery model is on Sungrow's approved list for your inverter
Note whether it started after a firmware update

What not to do

Do not open battery terminals or cables
Do not assume a battery works just because its voltage matches

When to call us

Check the BMS communication cable and port
Verify battery and inverter firmware and pairing
Check battery power cable polarity for 716

Battery pairing

We check Sungrow battery pairing and communication for homes in Faisalabad, Lahore and across Punjab, including third-party batteries.

Send us

inverter and battery model photos, the code, and when it started