AERONET Instrument Troubleshooting Interface - Solutions for LOW AVERAGE CIMEL INTERNAL BATTERY Flag

Description
Models 4 and 5 contain an internal 6 V battery that serves as a backup and helps regulate the power supply to internal electronics. The Model T does not have an internal battery and is not subject to this flag.

Condition(s)
Model 4.8x and Model 5.x Only: Average Cimel battery - flag if < 5 volts, do not include voltages < 4 volts and > 6 volts.

How To Check/Test
Model 4 and 5: VIEW > BAT
(disconnect solar panel before checking)

Solution Level 1 (< 5 minutes)
Model 4 and 5:
1. See External battery connections Model 5.jpg
2. Check/reseat all connections between solar panel and control box.
3. Check/reseat connector panel.

Solution Level 2 (more involved)
Model 4 and 5:
1. Check/reseat internal connections and check TIP32 transistor for burning. See Internal check control box.jpg and Testing TIP32 Transistor.pdf
2. Check power coming directly from solar panel.

Solution Level 3 (last resort)
Model 4 and 5:
1. Replace battery or solar panel.
2. Cut out the TIP32 transistor. See TIP burnt bypass.jpg
3. Return instrument for maintenance.