Solar · Error codes · Zhejiang Deye Electrical Appliances Co., Ltd.
F35Zhejiang Deye Electrical Appliances Co., Ltd. · Deye SUN-SG04LP1-EU single-phase hybrid
F35 on a Zhejiang Deye Electrical Appliances Co., Ltd. Deye SUN-SG04LP1-EU single-phase hybrid: No utility
Short answer
On a Zhejiang Deye Electrical Appliances Co., Ltd. inverter, F35 means: No utility. The inverter keeps running with some functions stopped.
Reviewed 24 September 2026 · 1 source
What it means
The manual says: No utility.
Part involved: grid connection.
Likely causes:
- Grid lost; switch between inverter and grid off.
Is it safe?
| Does the inverter stop? | Partly |
|---|---|
| Severity | Fault — clears by itself when the condition goes |
The inverter keeps running with some functions stopped.
Resetting itself: yes.
Manual reset: Clears when grid restored.
What you can check
- Read the full code and message on the inverter screen or in the Deye Cloud / installer app and note the date/time for your installer.
- Check the inverter's AC isolator next to the inverter and the solar/battery breaker in the consumer unit are ON (do not reset a breaker that trips again - call your installer).
- Check for a power cut.
What the engineer will check
- Check grid connection and switch.
Who to ask for: Qualified electrician / MCS PV installer.
Certification: None for homeowner checks; any grid-protection setting change needs installer and DNO consent (G98/G99).
What you might notice
Sources
- Hybrid Inverter User Manual SUN-3K/3.6K/5K/6K-SG04LP1-EU ↗ · Deye Hybrid Inverter User Manual SUN-3K/3.6K/5K/6K-SG04LP1-EU (file dated 2026-04-27) · page 47 · Reviewed 24 September 2026
A code explains what the controller detected, not a confirmed root cause.
Reviewed: 24 September 2026