XTEMP ENVIRONMENTS (SHANGHAI) CO., LTD.
http://www.xtemp-usa.com/
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DSGO0708-2-V211119/UXP8011-CD6400/CLASS I/NFL/RT+5~+100°C
Chapter 4 Maintenance
4
4.4 Clear error, warning and alarm
When the equipment displays
Er01
or
Er02
, check the connections of the Pt100 where
necessary.
Er01
and
Er02
are indications for short-circuit and open-circuit of the temperature sensor PT100.
For inspection, remove the screws for the controller cover as for checking and replacing of the
fuse (Fig 7). Check the wire connecting terminals of the PCBA for the temperature sensor (82),
and make sure no short-circuit or open-circuit occurs. If necessary, a multimeter may be used
for the resistance of the Pt100. The value of the sensor is 100
Ω
@0°C and +0.385
Ω
/°C. At 26°C
ambient, the resistance of the sensor is about 110
Ω
.
In most cases, loose wiring and terminating rather than open-circuit of the Pt100 sensor could
trigger an error and alarm. Once fixed, those alarms will disappear when switching on the
power again. If alarm still exists with Pt100 checked or replaced, and for servicing or
maintenance, call authorized service engineer.
When the equipment displays
Stb
, try first to pull down the temperature of the heater or the heat
transfer liquid and find the cause of the over temperature. The STB resets automatically once
temperature resumes to below designated limit value. Press
(Fig6-60) and
.
Reboot the controller by powering off and on again, the normal operation of the
temperature control will resume. If warning still exists with STB checked or reset, and for
servicing or maintenance, call authorized service engineer.
When the equipment displays alarm
ourh
, cut off power and deal with the equipment after bath
temperature goes down close to ambient, then turn on power again. If alarm still exists with
Pt100 checked or replaced, and for servicing or maintenance, call authorized service
engineer.
When the equipment displays
SPuP
, the equipment can’t work normally, cut off power, find the
cause of the over temperature. Reboot the controller again, if the equipment displays
SPuP
again, press
(Fig 6-60) and
,the normal operation of the temperature control
will resume. If warning still exists, and for servicing or maintenance, call authorized service
engineer.
