Input Over Voltage Fault — The DC Input voltage is too high

What does 74 mean?

The DC input voltage is too high, triggering a fault. This condition requires attention to prevent damage to the device. This fault may require manual clearing.

• The DC Input voltage is too high.
• The PV panels are producing voltage levels outside the operating specifications, possibly due to extreme cold temperatures.
• The installation may have too many PV panels in series.

Click steps to track your progress.

1. 1

   Check if the condition is due to extreme cold temperatures; it may correct itself as panels warm up.

2. 2

   Verify the number of PV panels in series is within the charge controller's operating range.

3. 3

   Consult the 'Electrical Specifications' for the charge controller's operating voltage range.

4. 4

   Manually clear the fault if possible after confirming the condition has resolved.

5. 5

   If the issue persists, contact a qualified installer for potential reconfiguration.