Fresenius Medical Care 4008 E Technical Manual page 50

Error description:
Error message
F01 Conductivity
F02 Conductivity
F03 Conductivity
F04 Conductivity
F05 Conductivity
F08 Conductivity
F06 Conductivity
F07 Conductivity
F95 Conductivity
Description
The conductivity failed to be within the scale limits or to stabilize within
10 minutes (±0.1 mS/10 sec).
– Concentrate is not connected.
– Acknowledgement (COND_SIG, X633L/B8) → X632/A22, voltage
outside the measuring range or unstable.
Detuning in positive direction not more than 0.5 mS (10 sec).
– Acknowledgement (COND_SIG, X633L/B8) → X632/A22 insuffi-
cient.
– Detuning (COND_DET, X632/A21) → X633L/B31 insufficient.
Detuning in negative direction not more than 0.5 mS (10 sec).
– Acknowledgement (COND_SIG, X633L/B8) → X632/A22 insuffi-
cient.
– Detuning (COND_DET, X632/A21) → X633L/B31 insufficient.
The conductivity cell indicates a constant value.
– The CD cell is defective.
CPU1 failed to transmit a Bibag status message within 3 sec.
– Run-time problem (software).
CPU 1 fails to increase the working point (when the conductivity is
<40mS/cm uncompensated) for the bibag conductivity by > 5 digits.
– Detuning (HOT_RINSE, X634R/C24 → X633R/A16) not 12V
– P.C.B. LP633 T2 or IC26 defective
The Bibag CD detuning is not more than 1 mS/cm.
– Acknowledgement (COND_SIGNAL3, X633R/A12) → MP TP3 on
P.C.B. LP 633, change in voltage insufficient.
– Detuning (COND_DET, X632/A21) → X633L/B31 insufficient.
The Bibag CD display is outside of the measuring range (46 to 84 mS/
cm).
– Acknowledgement (COND_SIGNAL3, X633R/A12) → MP TP3 on
P.C.B. LP 633.
– Conductivity outside the expected detuning range caused by wrong
concentrate on the bicarbonate port or temperature too low.
System error.
Fresenius Medical Care 4008 4/08.03 (TM)
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