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37
Error messages and troubleshooting table
Fault
Description
Causes
Effect
Solutions
Er 2
In remote operation (PC)
mode with activated
watchdog function in
mode 1: no communica-
tion between PC and RET
control-visc
• PC does not transmit any data
within the set watchdog time
• Connection to PC interrupted
Heating switched off
Motor switched off
• Change watchdog time
• Transmit data from PC within set
watchdog time (OUT_WDx@m)
• Check cable and plug
Er 3
Device internal tempera-
ture exceeds 80 °C
•
Heat accumulation between
heating plate and housing
•
Permitted ambient temperature
exceeded
Heating switched off
• Switch device off, leave to cool and
switch on again
• Change experiment
• Observe maximum permissible am-
bient temperature
Er 4
Difference between target
and actual speed exceeds
300 rpm
• Motor blocked or overloaded
Heating switched off
Motor switched off
• Reduce load torque or use smaller
magnetic rods
• Reduce target speed
Er 5
No temperature increase
in sensor at continuous
temperature difference
(selected time in menu)
• Sensor not in medium
• Volume of medium to be mea-
sured too large
• Heat conductivity of medium to
be measured too low
• Heat conductivity of the vessel is
too low
• In the case of indirect heating,
the overall heat conductivity re-
sistance is too large
Heating switched off
• Place the sensor in the medium
• Reduce the volume of the media
• Use a carrier fluid with better heat
conductivity properties
•
Replace the glass vessel with a
metal pot
• Increase the “Time-out” period
Er 6
Interruption in safety cir-
cuit
• Defective connection cable
Heating switched off
• Replace cable
Er 13
SAFE TEMP P adjustable
safety circuit defective
•
Target/current different of the
adjustable safety circuit for mini-
mum temperature monitoring
Heating switched off
•
After switching on, change the
SAFE TEMP to a different value; if
this solves the issue, the previous
value can be reset by switching the
device off and on again
Er 14
Short circuit in temperatu-
re sensor 1
• Short circuit in temperature sen-
sor plug
• Short circuit in the cable or tem-
perature sensor
Heating switched off
• Check the plug
• Replace the temperature sensor
Er 21
Fault during heating plate
safety test
• Safety relay does not open
Heating switched off
• Switch device off, leave to cool and
switch on again
Er 22
Fault during heating plate
safety test
•
S_CHECK cannot generate
H_S_TEMP
Heating switched off
• Switch device off, leave to cool and
switch on again
Er 24
The temperature of the
heating plate exceeds
SAFE TEMP H (Hotplate)
• SAFE TEMP H (Probe) has been
set to lower than the current tem-
perature of the heating plate
•
Disconnection of heating plate
control temperature sensor
Heating switched off
• Leave the heating plate to cool
• Set the SAFE TEMP H (Hotplate)
higher
Troubleshooting
The device will indicate that there is a fault by displaying an error
message “Er X” (see table) on the screen.
Heating will be switched off permanently (exception: WD - see
table).
The stirring function continues to operate at the pre-set speed if
there is a fault in the heating circuit (exception: WD - see table).
In order to reset the device after a fault, it may need to be discon-
nected from the power supply for several seconds. The period the
device is switched off may also need to be longer if the tempera-
tures need to be counterbalanced (residual heat display may no
longer be active; see “Residual heat display”).
The safety circuit test takes place within 20 seconds of switching
on the device; after the test, the other monitoring functions are
activated.
If a fault cannot be eliminated directly, you must perform a
RESET
(see “Settings” menu)
. If the faults still cannot be elimi-
nated, the appliance must be inspected by a technical service
technician.
Maintenance and cleaning
Fault
Description
Causes
Effect
Solutions
Er 25
Heating switching ele-
ment monitoring
• Heater control circuit switch (TRI-
AC) short-circuited
• Safety relay has interrupted the
heating circuit
• Heater or the supply line is dis-
connected
• Interruption in heating plate safe-
ty temperature sensor
Heating switched off
• Switch device off, leave to cool and
switch on again
Er 26
Difference between inter-
nal heating plate control
and safety temperature
sensor too large
• Irregular temperature distribution
across heating plate due to spo-
radic heat dissipation
• Defective control or safety tem-
perature sensor
Heating switched off
• Switch device off, leave to cool and
switch on again
•
Ensure regular heat dissipation
when using metal blocks, etc. on
the flat surface of the heating plate
Er 31
Defective monitoring of
the heating control circuit
(TRIAC)
Heating switched off
• Contact customer service
Er 41
Bar decoupling
• The bar has broken away four
times in a row without an explicit
change in the target value
Target speed reduced
by at least 300 rpm
Heating switched off
• Select a lower target speed
• Select a smaller stirring bar
Technical data
Rated voltage
or
or
VAC
VAC
VAC
220...230 ± 10%
115 ± 10%
100 ± 10%
Frequency
Hz
50 / 60
Power input
W
650
Display
TFT
Timer
h
99 h 59 min 59 sec
Stirring
Motor:
ball bearing mounted, brushless EC motor
The device is maintenance-free. It is only subject to the natural
wear and tear of components and their statistical failure rate.
Cleaning
- For cleaning disconnect the mains plug!
- Use only cleaning agents which have been approved by IKA to
clean IKA devices.
These are water (with tenside) and isopropanol.
- Wear protective gloves during cleaning the devices.
- Electrical devices may not be placed in the cleansing agent for
the purpose of cleaning.
- Do not allow moisture to get into the device when cleaning.
- Before using another than the recommended method for
cleaning or decontamination, the user must ascertain with IKA
that this method does not destroy the device.
Spare parts order
When ordering spare parts, please give:
- device type.
- serial number, see type plate.
- position number and description of spare part,
see
www.ika.com
.
- software version (second value displayed when switching on the
device)
Repair
Please only send devices in for repair that have been clea-
ned and are free of materials which might present health
hazards.
For repair, please request the “
Safety Declaration
(
Decontami-
nation Certificate
)” from IKA or use the download printout of it
from IKA website at
www.ika.com
.
If your appliance requires repair, return it in its original packaging.
Storage packaging is not sufficient when sending the device - also
use appropriate transport packaging.
