Fresenius Medical Care 4008 E Technical Manual page 24

Error description
Error message
F01 Venous
F02 Venous
F03 Venous
F04 Venous
F95 Venous
Description
CPU1 (input board) shows a venous zero point deviation of more than
±12 mmHg (60 s).
– Control (VENT_VALVE, X634R/C18) → X351/1 of the vent valve in
the LD is defective.
– Acknowledgement (P_VEN, X351/4) → X633L/B5 that the voltage
value is outside the zero point tolerance.
– P-venous has not been calibrated.
CPU2 shows a venous zero point deviation of more than ±12 mmHg
(60 s).
– Control (VENT_VALVE, X634R/C18) → X351/1 of the vent valve in
the LD is defective.
– Acknowledgement (P_VEN, X351/4) → X632/C17, the voltage
value is outside the zero point tolerance.
– P-venous has not been calibrated.
With detuning in positive direction, the achieved change in the venous
display is less than 100 mmHg (7 s).
– The test detuning is defective (PV_DET, X632/C18) → X351/2.
– Acknowledgement (P_VEN, X351/4) → X633L/B5, the change in
voltage is too low.
– P-venous has not been calibrated.
The deviation in the measured value between CPU1 and CPU2 is
higher than ±12 mmHg (if Pven > 100 mmHg).
– Acknowledgement (P_VEN, X351/4) → X633L/B5 and X632/C17
measure different voltage values.
– P-venous has not been calibrated.
System error.
Fresenius Medical Care 4008 4/08.03 (TM)
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