Chapter 4: Operator Troubleshooting
This chapter lists possible symptoms as well as the possible causes and solutions that an operator can
implement. All other possible symptoms and causes require professional diagnostics (Professional service
technicians may refer to Chapter 10).
ID Symptom Description Possible Causes Actions & Solution
OS1
When system is in standby
mode (plugged into power
outlet and standby/
on switch is not pressed
yet), both the standby/on
indicator and hour meter
display are o.
(Normally, when the system
is plugged into a power
outlet, the standby/on
indicator is green and the
hour meter display shows an
hour number.)
Power cord is not properly
connected.
Conrm that the power cord is plugged into
the power outlet and power inlet module. Also
make sure that the power cord is secured by
the retainer clip.
OS2
When the system is plugged
into the power outlet, the
over/under temperature
indicator is illuminated in
steady red.
The system temperature
is low (under-temperature
condition).
Make sure the system is being used in the
recommended temperature range. Allow
the system to warm up to the ambient
temperature before switching the system
into on mode. (The system fan turns on to
help the system warm up. When the system
has warmed up to the ambient temperature,
the system fan will turn o, the over/under
temperature indicator will turn o, and the
standby/on will illuminate green. This process
may take several minutes.)
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