3/4/2024 12:48 PM | |
Joined: 8/12/2021 Last visit: 8/14/2024 Posts: 322 Rating:
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Hi! This fault is detailed in the 400 manual. "It comes on when the battery voltage on the rear bus is too low and the BATT.INDIC. switch is in BATT" It is always advisable to do annual maintenance to change the backup battery. You must also take into account how long the battery has been supporting the program as this will reduce its capacity.
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