Fresenius Medical Care 4008 E Technical Manual page 79

Cyclical PHT F03
Cyclical PHT F04
V84 faultiness !
Shunt Cover open
(temporarily)
Voltage Failure
(temporarily)
1-72
Fresenius Medical Care 4008 4/08.03 (TM)
IC1 or IC3 on P.C.B. LP 632 is defective, or system leakage.
It was not possible to complete the test within a specific time interval.
Conductivity is recognized at the V84 electrodes.
This error message is emitted for the first time at the end of the T1 test.
The error can be acknowledged for the duration of one hemodialysis
procedure by pressing the Dialysis Start key. It is, however, not possi-
ble to switch off the flow (Bergström-/ISO-UF operating mode). Should
the error occur during Flow OFF, the flow is switched on automatically.
– First of all, it must be verified whether a Rinse Failure F01, F02 or
F03 occurred during the previous disinfection procedure (see listing
of cleaning program errors). Should this be the case, a disinfection
program I to IV (not Dis V) must be completed correctly. The
problem can also be corrected using the calibration program,
NOVRAM menu item (Reset V84).
– Should this not be possible, the error memory of the machine can be
read out.
– Should this neither be possible, the test described below can be
performed:
Remove the disinfectant.
Switch the machine off and on again.
Perform or skip the T1 test.
Should the error message be displayed again at the end of the test,
it was generated by a Rinse Failure F01, F02 or F03 and can be
cleared only by taking the measures described above.
Should the message not be displayed again, a second test can be
performed:
Reconnect the disinfectant.
Set the UF rate and switch on the UF unit.
Should the error occur at this moment, there is a leakage on V84
(see listing of cleaning program errors).
– P.C.B. LP 633 C24 (100n) temporarily short-circuited.
– Shunt interlock defective (check switches).
P.C.B. LP 633 C84 (100n) temporarily short-circuited.