Quick take
Check prefilters, membrane rejection, inlet pressure, flushing and drain routing before blaming the pump or electronics. If the remineralized taste changes, inspect the post-treatment cartridge as well.
Flow drop
A high-capacity unit can expose clogged prefilters quickly. Compare current flow with baseline performance after installation.
TDS changes
Remember that remineralization can raise finished-water TDS intentionally. Measure before and after the remineralization stage when diagnosing membrane performance.
Drain behavior
Periodic flushing is normal; continuous drain flow is not. Verify drain plumbing and whether the unit exits flush mode.
Replacement strategy
Annualize the ASR211, ASR212-800G and remineralization filter costs before deciding whether continued ownership still makes sense.