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Troubleshooting
7 Troubleshooting
This section contains information on troubleshooting.
In the event that the Field Temperature Block appears to function abnormally, this
section may help to nd and solve the problem. Several possible problem conditions
are described along with likely causes and solutions. If a problem arises, please read
this section carefully and attempt to understand and solve the problem. If the Field
Temperature Block seems faulty or the problem cannot otherwise be solved, contact
an Authorized Service Center for assistance. Be sure to have the instrument model
number, serial number, and voltage available.
Table 8 Troubleshooting, problems, causes and solutions
Problem Causes and Solutions
The instrument does not power
up
Check the fuses. If a fuse blows, it may be due to a power surge or a
component failure. Replace the fuse once. DO NOT replace the fuse
with one of a higher current rating. Always replace the fuse with one
of the same rating, voltage, and type. If the fuse blows a second time,
it is likely caused by failure of a component part.
Check if the circuit breaker has tripped. Press the button to reset the
circuit breaker. If the circuit breaker continues to trip repeatedly, there
is likely a failure of a component part. Contact an Authorized Service
Center.
Power Cord. Check that the power cord is plugged in and connected
to the instrument.
AC Mains Power. Insure the circuit supplying power to the instrument
is on.
The display is blank
The instrument powers up:
FB150 – fan turns on, FB350
and FB660 – the power relay
clicks, but the display remains
blank
Contrast. Check the screen contrast. Toggle the down arrow key to
see if the screen contrast lightens.
If the contrast is not the issue, contact an Authorized Customer
Service Center.
The instrument heats slowly Scan Rate. Check the Scan Rate settings. The Scan Rate may be set
with too low a rate per minute for the current application.
If the display shows an
abnormal temperature
The sensor is disconnected, open or shorted. Please contact a
Service Center for further instructions.
If the display shows cutout Cutout. If the Temperature Block exceeds the temperature set in the
soft cutout menu, or if it exceeds the maximum operating temperature
of the instrument, a cutout condition occurs. If this happens, the unit
enters cutout mode and will not actively heat or cool until the user
issues the command to clear the cutout or resets the instrument
using the SET PT. key to clear the cutout mode and activate the
instrument.
Reset. The software cutout may need to be adjusted for the
application. Check and adjust the cutout setting by entering CUTOUT
menu: MENU|TEMPSETUP|CUTOUT.
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