Amfa4000 Backup Power / Memory Retention Failure

Amfa4000 frequently loses time or settings after short power cuts

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Failed backup capacitor or battery on Amfa4000 PCB, Excessive power interruptions, Defective control board memory circuit

Safety first: Disconnect power before opening the control housing.

1. Minimize power interruptions: Ensure the Amfa4000 is not on a switched outlet that is turned off regularly.
2. Inspect PCB backup components: Look for a coin-cell battery or supercapacitor on the board. If corroded or swollen, the board should be replaced.
3. Record settings: Keep a written record of all programming so they can be quickly restored after any outage.

Persistent loss of settings despite stable power indicates a failing control board that should be replaced.

Medium 3/5

Amfa4000 Main Control Board

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