E--883--4N--E
1
9. TROUBLESHOOTING
Reminder: If internal trouble is suspected, seek our service at the nearest sales office or
customer service representative in your area.
Table 9.1
Symptom
Check
Possible Causes
Display is dead.
1. Inspect fuse.
2. Make sure of power source voltage.
1. Fuse is blown.
2. Line voltage is improper.
3. A fault in internal assembly.
Faulty temperature indication.
Erratic reading
Error messages
TEMP 1 (PT) OVER
or TEMP 1 (PT) UNDER
or TEMP 1 (ANA) OVER
or TEMP 1 (ANA) UNDER
(Same also with TEMP 1.)
1. Input signal line correctly wired?
2. Input signal specifications
matched?
3. System configured correctly?
4. Temperature range set correctly?
1. Input wiring is incorrect.
2.Thermometer resistance bulb is
open or shorted.
3. Temperature converter is faulty.
4. A fault in internal assembly.
Faulty indication of meter error
correction factor and/or temperature
correction factor.
1. Temperature reading correct?
1. A fault in internal assembly.
While
fluid
is
allowed
to flow.
Fails to count pulses;
fails to produce a pulse
output.
1. Input signal line correctly wired?
2. Pulse signal coming in?
3. Pulse generator specifications
matched?
1. Incorrect input wiring.
2. Pulse generator itself is faulty.
3. A fault in internal assembly.
Faulty total counter
reading.
1. Temperature reading correct?
2. Meter error and temperature
correction factor indications correct?
1. Pulse generator itself is faulty.
2. A fault in internal assembly.
Error messages
A/D CONVERT ERROR
or DENSITY CONVERT ERROR
or 4mA SCALER 1 UNDER
(Same also with SCALER 2.)
1. A fault in internal assembly.
Error messages
DENSITY SIGNAL
or DENSITY OVER
or DENSITY UNDER
or 20mA SCALE OVER
1. System configured correctly?
2. Input pulse signal correct?
3. Flowrate full scale set properly?
1. A fault in internal assembly.
CAUTION: Once any printed circuit board(s) of the internal assembly has been
removed for servicing, do not fail to reestablish all parameters in the SET
mode.
