Thermo Scientific Heratherm IMH 60 Operating Instructions Manual page 109

Table 12-1 Heratherm Incubator Error Codes
Error Message & Code
Temperature Not Plau-
sible (E103)
Calibration Value Too
High (E104)
Calibration Value Too
low (E105)
Constant Sensor Sig-
nal (E106)
Constant Reference
Sensor Signal (E107)
Constant Sample Sen-
sor Signal (E108)
Heating Relay Error
(E109)
Thermo Scientific
Root Cause
The difference between the
control and reference sen-
sors exceeds the maximum
permissible deviation, ren-
dering the measurement
implausible.
The calibration reference
value calculated on the
basis of the user input falls
short of the upper limit for
calibration references.
The calibration reference
value calculated on the
basis of the user input
exceeds the lower limit for
calibration references.
None of the decimal places
of the A/D-converter out-
put for the process sensor
has changed over a spe-
cific time period.
None of the decimal places
of the A/D-converter out-
put for the reference sen-
sor has changed over a
specific time period.
None of the decimal places
of the A/D-converter out-
put for the sample sensor
has changed over a spe-
cific time period.
The voltage measurement
has indicated a defect in
the heater circuit relay.
Alarm Response
Device uses the sensor
that indicates the higher
temperature for servo con-
trol. Audible alarm acti-
vated, alarm relay
energized, message shown
on display. Error can be
acknowledged and doesn't
reset.
Fallback to previous cali-
bration reference. Audible
alarm activated, alarm
relay energized, message
shown on display.
Fall back to previous cali-
bration reference. Audible
alarm activated, alarm
relay energized, message
shown on display.
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.
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.
Audible alarm activated,
alarm relay energized,
message shown on dis-
play.
Device completely inopera-
tive, audible alarm acti-
vated, alarm relay
energized, message shown
on display.
Error Codes
Alarm Clearing Instructions
If the error occurs repeat-
edly, call service.
Check the external refer-
ence sensor for proper
function and replace, if
necessary. If this does not
solve the problem, call ser-
vice.
Check the external refer-
ence sensor for proper
function and replace, if
necessary. If this does not
solve the problem, call ser-
vice.
Call service.
Call service.
Call service.
Be sure to pull the power
plug and disconnect the
device from the AC mains.
Call service.
Heratherm
*
12-3