SG04LP3/SG05LP1 hybrid families and SG01HP3-EU-DM2
Deye F63 error code
ARC fault (DC arc) detected; arc detection is provided for the US market.
Likely causes
- DC arc in the PV wiring or connector
- Damaged PV cable
- Loose MC4 connector
- US-market AFCI function enabled
Checks to run, in order
- 1Inspect the PV module cables and connectors
- 2Check for loose or damaged connections
- 3Restart the inverter
Fixes
- Repair or replace the damaged PV cable and connectors
- Restart the inverter
When to escalate
If no arc source is found and F63 persists, the distributor should check the AFCI circuit.
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 F63 mean?
ARC fault (DC arc) detected; arc detection is provided for the US market.
How do I fix Deye F63?
Repair or replace the damaged PV cable and connectors Restart the inverter
When should I escalate Deye F63?
If no arc source is found and F63 persists, the distributor should check the AFCI circuit.
Can I reset Deye F63 myself?
Only after isolating the AC and DC sides and running the checks above. If Deye F63 returns immediately, stop resetting it and escalate; a repeating fault usually points to a real circuit, battery or hardware problem.
Which models show Deye F63?
Deye F63 is documented for SG04LP3/SG05LP1 hybrid families and SG01HP3-EU-DM2. 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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