IKA RET control-visc 0005020000 [33/136] Troubleshooting

IKA RET control-visc 0005020000 [33/136] Troubleshooting
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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.

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