What you will see
- F37 on winter mornings
- After adding or changing panels
Why it happens
Panel voltage rises in cold weather.
Diagram
Cold mornings raise string voltage
Summer noonSpring morningCold winter morning
Illustration. Fix by fewer panels in series.
What you can check yourself
- Note recent panel changes
What not to do
- Do not add panels yourself
When to call us
- Check string design for winter
- Re-string with fewer panels in series
Winter mornings
Clear winter mornings in Punjab push string voltage up. We check GoodWe strings for winter.
Send us
alarm, panel model and panels per string