AERONET Instrument Troubleshooting Interface - Solutions for CIMEL INTERNAL BATTERY NEGATIVE TREND Flag

Condition(s)
Include battery voltage trends for all 3 batteries:
Scan daily average battery voltages for previous month; flag if the trend is less than -0.5V for DCP and Cimel External 12V batteries; flag if the trend is less than - 0.2V for Cimel 6V internal battery

How To Check/Test
(See example)

Models 4 and 5 ONLY: VIEW > BAT (disconnect solar panel before checking)

Solution Level 1 (< 5 minutes)
1. Check/reseat all connections between solar panel and control box.
2. Check/reseat connector panel.
3. Check/reseat connections going to internal battery.

Solution Level 2 (more involved)
Models 4 and 5:
1. Check/reseat internal connections and check TIP32 transistor for burning.

Solution Level 3 (last resort)
1. Replace battery or solar panel.
2. Return instrument for maintenance.