What this code means
Water intake fault - desired number of pulses from flow meter not detected within given time (maximum 4 minutes); program is interrupted and drain pump is operated. Possible causes: On-site water supply not in order; Water inlet valve defective; Flow meter B3/4 providing too few pulses; Reed switch connection issue; Water flow pressure at on-site water supply less than 14.5 psi (1 bar); Electrical connection open-circuited; Filter or restrictor disc in WPS valve Y2 blocked
Next steps: diagnose the root cause
Power cycle the unit and see if the code returns. If it does, the fault is persistent and requires diagnosis.
Get step-by-step guidance, test values, and wiring diagrams from the OEM service manual.
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