12 Troubleshooting
8. Troubleshooting
Fault Cause Localize fault Remedy
Appliance does not start. O/I indicator and
capacity indicator show ready for operation
Vacuum in system
Detach tube from pressure sensor. Switch
appliance off and on again. Pump must now
run.
Clear blockage in tube system.
Controller hanging. Perform reset.
Disconnect external power supply and power
pack from circuit board for at least 2 minutes.
Front membrane faulty
If display test functions on switching on and the
appropriate set value LED flashes when the
relevant set value key is pressed, the front
membrane is in order. If not, the cause of the
fault may be either the front membrane or the
circuit board.
First check the connection between the circuit
board and the front membrane. Otherwise fit
new front membrane.
Circuit board defective
Connect circuit board to functioning pump and
switch on. If pump does not run, …
… fit new circuit board (9.10, page 22)
Pump defective
Connect pump to functioning circuit board and
switch on. If pump does not run, …
… fit new pump (9.11, page 24)
Appliance does not start. O/I indicator does
not show ready for operation
Controller hanging Perform reset
Disconnect external power supply and power
pack from circuit board for at least 2 minutes.
Fuse F1 or F2 in appliance defective
If Rescue does not charge up, fuse F1 is
probably defective.
Fit new fuse (9.8, page 21)
Fuse in vehicle plug defective Fit new fuse (9.12, page 25)
Power pack fully discharged
Perform several charge/discharge cycles. If
unsuccessful, fit new power pack (9.6,
page 19)
Incorrect polarity of vehicle power socket
If an external power supply with incorrect
polarity is connected, a protective diode
ensures that fuse F1 blows to protect the
electronic system.
Correct polarity and if necessary replace fuse
F1 (9.8, page 21)
Snap-in connection between circuit board and
power pack not properly engaged
Make sure connection snaps in
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