Clock backup battery low

This warning means the inverter has measured a voltage on its internal backup (buffer) battery that is too low. FIMER inverters report it as W012, labelled Batt. Low or Batt. Flat. The warning shows as a flashing yellow LED or the alarm LED. On some models the code is not shown on the display. When the buffer battery is low, the inverter cannot keep its time setting. First check that the date and time are correct, and set them if they are not. Then switch the inverter fully off on both the AC and DC side, wait a few minutes and restart it. If the clock has gone back to 01/01/2000, the battery needs replacing. Replace the battery only with the inverter fully isolated on both the AC and DC side, and keep the correct polarity. Some meters report the clock battery voltage directly and set a low-battery warning bit, which can confirm the problem remotely.

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• sentence 1: support check: partial - Passages state W012 Batt. Low/Batt. Flat for a too-low buffer battery voltage, but do not name FIMER as the manufacturer.
• sentence 7: support check: partial - Passages show a clock battery voltage and a low-battery warning bit, but do not say this can confirm the problem remotely.
• sentence 7: review: partial - The SEL-735 passages show a clock battery voltage measurement (BATT) and a LOWBAT warning bit, but they never say this can confirm the problem remotely. -->