SUN-5-12K-SG01HP3-EU-DM2 three-phase hybrid (F-series table)
Deye F14 error code
DC overcurrent detected by the control firmware.
Likely causes
- Battery or PV current above the inverter limit
- DC short circuit or reverse current
- Battery charge/discharge current limit set too high
- Large load step in off-grid mode
Checks to run, in order
- 1Measure DC current with a clamp meter
- 2Compare battery and PV current with the datasheet
- 3Check the DC wiring for shorts
- 4Check the battery current limits in the settings
Fixes
- Reduce the load or the PV/battery current
- Correct the battery current limits
- Restart the inverter
When to escalate
If DC current is within specification and F14 persists, the DC current sensor or power stage needs distributor service.
Fix it with the right tools
Check the system around the fault before replacing parts: load, battery bank, PV string and commissioning settings. If you need a second opinion, send the code and your inverter model to our team.
Before you open the inverter
- Isolate both the AC and DC sides, then confirm the display is dead before touching terminals.
- Use insulated tools and one hand where possible. DC arcs do not self-extinguish like AC.
- If you see burnt terminals, swollen cells, leaking electrolyte or a burning smell, stop and escalate instead of resetting the fault.
Questions installers ask
What does Deye F14 mean?
DC overcurrent detected by the control firmware.
How do I fix Deye F14?
Reduce the load or the PV/battery current Correct the battery current limits Restart the inverter
When should I escalate Deye F14?
If DC current is within specification and F14 persists, the DC current sensor or power stage needs distributor service.
Can I reset Deye F14 myself?
Only after isolating the AC and DC sides and running the checks above. If Deye F14 returns immediately, stop resetting it and escalate; a repeating fault usually points to a real circuit, battery or hardware problem.
Which models show Deye F14?
Deye F14 is documented for SUN-5-12K-SG01HP3-EU-DM2 three-phase hybrid (F-series table). Confirm the code on your own unit's display or manual before ordering parts.
More Deye error codes
- Deye F01PV input polarity is reversed at one or both DC inputs.
- Deye F02PV insulation resistance to earth is below the safety limit.
- Deye F03Ground fault detected on the PV array (GFDI).
- Deye F04GFDI ground-failure alarm: the PV array or inverter is not properly earthed.
- Deye F05Control-board EEPROM read failure.
- Deye F06Control-board EEPROM write failure.
Guidance reviewed 17 October 2026 by the Mishka Energy installer team. Error codes vary by brand, model family and firmware; confirm against the manufacturer manual.
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