What you will see
- Alarm 40 on cold mornings
- After adding panels
Why it happens
Panel voltage rises in cold weather.
Diagram
Cold mornings raise string voltage
Summer noonSpring morningCold winter morning
Illustration. Alarm 40 / 42: 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
- Re-string with fewer panels
Winter mornings
We check Sineng strings for winter voltage in Faisalabad and Lahore.
Send us
alarm, panel model and panels per string