Fluke VT Plus HF, Operator'S Manual

Page: 85 / 134

Gas Flow Analyzer
Safety, Error Messages, Troubleshooting, and Support
7
7-7
6.
Troubleshooting
Problem Possible Cause Corrective Action
VT PLUS HF does not
turn on - Screen is dark
No power Plug unit into an AC mains
outlet using the supplied
power cord.
Turn the switch on.
Screen contrast not set Adjust screen contrast using
multiple pushes of the
contrast key on the side of
the
VT PLUS HF display.
Blown fuse Replace fuse with one of
correct rating as marked on
the
VT PLUS HF rear panel
or as specified in the
manual.
VT PLUS HF screen
turns on but is just white.
Splash may or may not
appear before screen
goes white
Flash program memory not
loaded If problem persists, call
Servic.
Flash memory or boot
memory resulted in
incorrect checksum. If problem persists, call
Service.
Screen contrast not set Adjust screen contrast using
multiple pushes of the
contrast key on the side of
the
VT PLUS HF display.
Screen is difficult to read Screen contrast not set Adjust screen contrast using
multiple pushes of the
contrast key on the side of
the
VT PLUS HF display.
Flicker is observed on left
side of
VT PLUS HF
screen
Slight flicker is normal Adjust contrast to diminish
effect.
"Out of Range" messages
appear Measured signals out of
specified range Ensure that all pressures
and flow rates are within
the
VT PLUS HF specified limits.
Units are not set to those
used for the range
specifications. User
mistakenly assumes that
range is not exceeded due
to readings in the different
units. For example,
monitoring pressures in psi
while trying not to exceed a
range specified in cmH2O. Ensure the units selected are
the same as the specified
limits.