Error Codes
Fisher Scientific
Peltier Low Temp. Incubators 12-3
Calibration Value Too
High (E104)
The calibration reference
value calculated on the
basis of the user input falls
short of the upper limit for
calibration references.
Fallback to previous cali-
bration reference. Audible
alarm activated, alarm
relay energized, message
shown on display.
Check the external refer-
ence sensor for proper
function and replace, if
necessary. If this does not
solve the problem, call ser-
vice.
Calibration Value Too
low (E105)
The calibration reference
value calculated on the
basis of the user input
exceeds the lower limit for
calibration references.
Fall back to previous cali-
bration reference. Audible
alarm activated, alarm
relay energized, message
shown on display.
Check the external refer-
ence sensor for proper
function and replace, if
necessary. If this does not
solve the problem, call ser-
vice.
Constant Sensor Sig-
nal (E106)
None of the decimal places
of the A/D-converter out-
put for the process sensor
has changed over a spe-
cific time period.
Control transferred to refer-
ence sensor, audible alarm
activated, alarm relay ener-
gized, message shown on
display. If both sensors are
defective, all control circuits
will be disabled.
Call service.
Constant Reference
Sensor Signal (E107)
None of the decimal places
of the A/D-converter out-
put for the reference sen-
sor has changed over a
specific time period.
Control continues on pro-
cess sensor, audible alarm
activated, alarm relay ener-
gized, message shown on
display. If both sensors are
defective, all control circuits
will be disabled.
Call service.
Constant Sample Sen-
sor Signal (E108)
None of the decimal places
of the A/D-converter out-
put for the sample sensor
has changed over a spe-
cific time period.
Audible alarm activated,
alarm relay energized,
message shown on dis-
play.
Call service.
Temperature Too High
(E111)
The actual measured value
exceeds the upper limit of
the permissible error range.
Audible alarm activated,
alarm relay energized,
message shown on dis-
play. Heater turned off until
upper limit of hysteresis is
recovered. Servo control
operations continue. Alarm
can be acknowledged, and
goes away when the differ-
ence between the actual
and set values ceases to
exist. Note: This error does
not indicate a defective
triac.
Open the door to speed up
cool-down. Check whether
the device was loaded with
a hot object, if so, remove.
Ensure that the equipment
was operated with at least
one perforated shelve and
with the door not opened
longer than 10 min. If this
doesn’t solve the problem,
call service.
Sensor Error (E112)
The measured actual value
is out of range.
Audible alarm activated,
alarm relay energized,
message shown on dis-
play. Control continues on
process sensor. If both
sensors are defective, all
control circuits will be dis-
abled.
If error does not go away,
call service.
Table 12-1 Fisher Scientific low temperature incubator Error Codes
Error Message & Code
Root Cause
Alarm Response
Alarm Clearing Instructions
*
Summary of Contents for Isotemp 178L 120V
Page 1: ......
Page 6: ...Contents iv Peltier Low Temp Incubators Fisher Scientific...
Page 8: ...List of Figures ii Peltier Low Temp Incubators Fisher Scientific...
Page 84: ...Technical Data 13 4 Peltier Low Temp Incubators Fisher Scientific...
Page 88: ...Device Log 15 2 Peltier Low Temp Incubators Fisher Scientific...
Page 91: ...Contact Fisher Scientific Peltier Low Temp Incubators 16 3...
