Applicable Systems
Symmetra LX
Symptoms
A transformer has a fault. The UPS cannot convert voltage correctly.
Possible Causes
- Transformer winding short circuit
- Transformer core fault or overheating
Troubleshooting Steps
- Step 1: Check the UPS fault log for the specific transformer fault sub-code
Detailed fault information is obtained - Step 2: Contact APC support with the fault code for diagnosis
Support confirms the faulty component
How to Reset
To reset: Power-cycle the UPS. If the error persists, contact APC support for repair.
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Source: APC Smart-UPS User Manual, Schneider Electric/APC
Category: UPS
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