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FranklinWH•aPower

Analysis by Marcus & Team

FranklinWH aPower Error 3019: Emergency Stop Triggered

Troubleshoot FranklinWH aPower Error 3019: Emergency Stop. Find causes, solutions, safety warnings for residential battery systems.

Frequently Asked Questions

•What are the typical DC voltage levels in a FranklinWH aPower system during normal operation?

The DC voltage typically ranges from 48V to 58V depending on the state of charge and system configuration.

•How do I access the system logs for the FranklinWH aPower to diagnose error 3019?

System logs can be accessed through the FranklinWH monitoring app or the installer portal. Refer to the FranklinWH documentation for specific instructions.

•What are the NEC code requirements for DC disconnects in residential battery storage systems?

NEC Article 690.13 and 706 require readily accessible DC disconnects located near the battery system and any PV array interconnection points.

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Marcus leads the technical research department at Storage Faults. Together with a team of systems analysts, he specializes in translating complex solar storage error codes into actionable diagnostic steps for the US market.

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How It Works:

The FranklinWH aPower system includes an emergency stop (E-Stop) circuit designed to immediately interrupt power flow in critical situations. This circuit typically utilizes a normally closed (NC) contact that, when opened, triggers a system shutdown. The BMS monitors various parameters including cell voltage, current, and temperature, and can initiate an emergency stop if limits are exceeded. The inverter section converts DC power from the batteries to AC power for household use. Emergency stop events will halt the DC-AC conversion process.

What to Look For:

The FranklinWH aPower system displays Error 3019, indicating an emergency stop condition. The system may be unresponsive and unable to provide backup power. AC output voltage is 0V, DC bus voltage may be present but not converting to AC.

Safety Warning:

The FranklinWH aPower system operates at high DC voltages. Improper handling can result in severe electric shock or arc flash. Always de-energize the system using the DC disconnect switch before performing any maintenance or troubleshooting. Only qualified electricians familiar with NEC Article 706 and battery storage systems should perform repairs. Never attempt to work on live circuits.

Recommended Action:

1

*Safety First:** Verify DC disconnect switch is OPEN. Ensure NEC Article 690.13 requires a readily accessible disconnect. Confirm no live circuits are present before proceeding.
2

Inspect the external emergency stop button (if present). Ensure it is not depressed. Reset if necessary.
3

Using a multimeter, check the continuity of the emergency stop circuit wiring. Look for opens or shorts.
4

Verify the DC bus voltage at the inverter input terminals with a multimeter. A low or zero voltage indicates a problem with the battery or DC disconnect.
5

Check the system logs for any related error codes or warnings that precede Error 3019. Use the FranklinWH monitoring app or installer portal.
6

Attempt a system reset via the FranklinWH monitoring app or by cycling the DC disconnect switch (after confirming no active faults are present).
7

If the error persists, contact FranklinWH technical support for further assistance. They may require access to detailed system logs and diagnostic data.

Possible Causes:

Activation of the external emergency stop button (if installed).
Internal BMS fault triggering an emergency stop due to overvoltage, undervoltage, overcurrent, or overtemperature.
Faulty emergency stop circuit components (e.g., wiring, relay).
Communication failure between the BMS and the inverter, leading to a false emergency stop signal.
DC disconnect switch is open, preventing power flow to the inverter.
Firmware or software glitch in the BMS.

Prevention:

Regularly inspect the system for any signs of damage or wear.
Perform routine firmware updates as recommended by FranklinWH.
Monitor battery performance through the FranklinWH app for any anomalies in voltage, current, or temperature.
Ensure proper ventilation around the battery system to prevent overheating.