P- H.4.8.2 Remains Stable And No Alarms Occur/Heat-Related Problem?; P- H.4.9 Unstable Or Alarm Reoccurs/Analize Problem - Fresenius Medical Care 2008K2 Troubleshooting Manual

P- H.4.8.2 REMAINS STABLE AND NO ALARMS OCCUR / HEAT-RELATED PROBLEM?
a) Place the machine into Heat Disinfect then call debug screen 10 to watch the 24V window.
b) WITHOUT LOOKING AWAY, watch the volt meter until if the program completes.
c) Does the measurement become unstable AND/OR does a "24V" OR "Failed Sending Data To The
Actuator Board" alarm occur before Heat Disinfect completes?
Yes Unstable measurement OR "24V" OR "Failed Sending Data..." alarm! See procedure
number
No Return to Dialysis Program. Does a "24V" OR "Failed Sending Data To The Actuator Board"
alarm occur (Yes or No)?
Yes
No The Troubleshooting Guide cannot locate an immediate problem!
P- H.4.9 UNSTABLE OR ALARM REOCCURS / ANALYZE PROBLEM
TWO (2) possible scenarios, based on MEASURED voltage:
1) IF (and ONLY if) MEASURED voltage became UNSTABLE: Proceed to
number P- 4.0.0.
2) IF MEASURED voltage remained STABLE: Perform parts a THROUGH c below:
a) Place the machine into Service Mode → Options → Hardware Options.
b) Next to T and C Mode place the 'X' in the "Yes" box and press 'CONFIRM.'
The 'X' turns blue.
c) With the machine off, swap in the card cage circuit boards, with known good, one at a time, starting
with the Actuator-Test Board and, in between, return to Heat Disinfect to test each new board. If
"24V" OR "Failed Sending Data..." alarm reoccurs swap in the next board until these alarms DO
NOT occur.
P- H.4.9 (page 627).
One at a time, starting with the Actuator-Test Board, swap in the card cage
circuit boards, with known good then, in between, repeat procedure number
P- H.4.8.2 (page 627) to test each new board.
2008K/K2 Troubleshooting Guide
P/N 507298 Rev. H
page 649
, procedure
Page 627