32
Timeout in U1 Phase
Fronius · Perfect Charging
What does 32 mean?
The battery charger experienced a timeout during the U1 (initial constant voltage) charging phase. This suggests the battery could not absorb current as expected or reach a stable state within the defined time, potentially indicating a battery health issue or charger malfunction.
Common Causes
- The battery is not absorbing current at the expected rate in the U1 phase, indicating potential degradation or internal resistance issues.
- Incorrect charger settings for the U1 phase timeout value, which may be set too short for the battery's condition.
- A faulty voltage measurement or regulation circuit within the charger, leading to incorrect detection of the U1 phase end condition.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Verify the charger's output voltage and current measurement accuracy during the U1 phase.
- 2
Check the charger's configuration for the U1 phase timeout setting (parameter, if available) and ensure it is suitable for the battery type and condition.
- 3
Assess the battery's overall condition, as it may not be accepting charge properly due to age or damage.
Verified technical data. Last updated: March 2026
Related Faults
Source: Fronius Perfect Charging