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Table 8. Possible causes and solutions for potential
issues
Problem
Possible Cause Possible
Solution
Correct plug
adapter (voltage
converter) is not
connected to the
charger.
Connect the
appropriate plug
adapter (voltage
converter) to the
charger.
Charger is
defective.
Replace the
charger.
Patient controller
is damaged or
malfunctioning.
Replace the
patient
controller.
Nothing is
displayed on the
screen.
Patient controller
is off or has
timed out.
Turn on the
patient
controller.
Patient
controller’s
battery is
drained.
Recharge the
battery using the
charger.
