Chapter 8. Maintenance and Troubleshooting
156
Model PM880 Portable Hygrometer User’s Manual
MIS Probe (cont.)
No link to the
MIS probe.
This screen appears when trying
to write to a disconnected MIS
probe.
Press
[F3]
(
OK
) to cancel all
writes. The PM880 will read from
the next connected MIS probe.
During the “No Link”condition,
the Hygro and Pressure tabs in the
Calibrate menu are disabled. These
calibration values are erased until a
new probe is connected.
A MIS probe
change has
been
detected.
This screen appears after a probe
change.
Press
[F3]
(
OK
) to cancel all
writes. The PM880 will read data
from the next connected MIS
probe.
MISC
Probe due for
calibraton.
This screen appears at the
user-programmed interval in the
Probe ID tab in the Calibrate
menu.
Send probe back to factory for
recalibration. If you are recalibrat-
ing a MIS probe, make sure you
send the electronics module back
with the probe.
Press
[ENTER]
to temporarily
clear the reminder.
To turn off the reminder, use the
Program, Calibrate, Probe ID
menus. Turn Cal Reminder to
None.
If you see this
message, the
watchdog test
has FAILED.
Please consult
the factory for
instructions.
This screen appears if the
watchdog timer circuit fails the
watchdog test (Service, Test,
Watchdog Test menu).
Press
[F3]
(
OK
) to continue.
Contact the factory.
Table 5: Error and Screen Messages (cont.)
Error
Message
Problem
Action
