SUN-5-12K-SG01HP3-EU-DM2 three-phase hybrid (warning codes)
Deye W32 error code
Parallel communication is unstable.
Likely causes
- Loose parallel communication cable
- Cable run alongside power cables
- Wrong dip-switch or address setting
Checks to run, in order
- 1Check the parallel communication cable
- 2Check the cable routing
- 3Check the dip-switch settings
Fixes
- Reseat or replace the cable
- Route the cable away from power cables
- Set the dip switches correctly
When to escalate
If the wiring is correct and W32 persists, the distributor should check the parallel communication board.
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 W32 mean?
Parallel communication is unstable.
How do I fix Deye W32?
Reseat or replace the cable Route the cable away from power cables Set the dip switches correctly
When should I escalate Deye W32?
If the wiring is correct and W32 persists, the distributor should check the parallel communication board.
Can I reset Deye W32 myself?
Only after isolating the AC and DC sides and running the checks above. If Deye W32 returns immediately, stop resetting it and escalate; a repeating fault usually points to a real circuit, battery or hardware problem.
Which models show Deye W32?
Deye W32 is documented for SUN-5-12K-SG01HP3-EU-DM2 three-phase hybrid (warning codes). 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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