Error Messages - IKA HBR 4 digital Mode D'emploi

The following error messages can be displayed (Fig. 20) and have the following causes described:
Error code Cause
Er 2 In remote operation (PC) mode with activated
watchdog function in mode 1: no communication
between PC and HBR 4 control. PC does not
transmit any data within the set watchdog time, or
connection to PC is interrupted.
Er 3 Internal device temperature above 76 °C
Er 4 Motor speed deviates ±300 rpm from the speed
Set speed greater than 350 rpm
Stirring function turned on, Actual speed = 0 rpm
Er 4
Indication after approx 30 sec
Er 5 No temperature increase in PT 1000.60/61 at con-
tinuous temperature difference (corresponding to
the set error 5 response time)
Er 11 Temperature sensor PT 1000 unplugged during
operation
Er 12 Temperature sensor PT 1000 plugged in during
operation
Er 20 Safety relay does not close
Er 21 Safety relay does not open
Er 22 Disturbance before the last time the device was
switched OFF or safety temperature is lower then
the temperature of the medium
Er 23 Adjustable safety circuit faulty
Er 24 Safety temperature set exceeded
Er 26 System dry, no medium in the bath container
Er 27 Calibration error
Er 28 Sensor rupture
Er 29 Short circuit in the safety sensor or controller and
safety sensor mixed up
Er 30 Short circuit in the controller sensor
If the actions described fail to resolve the fault or another error code is displayed then take one of the following steps:
- contact the IKA ® service department,
- send the device for repair, including a short description of the fault.

Error messages

Correction
Change watchdog time.
Transmit data from PC within set watchdog time (OUT_WDx@m).
Check cable and plug.
Allow the device to cool down
Mains switch OFF/ON
Reduce load
Mains switch OFF/ON
Mains switch OFF/ON
Increase the speed or turn on the stirring function
Place the temperature sensor in the medium.
Adjust the error 5 response time according to the response cha-
racteristic of the system.
Plug in and unplug temperature sensor only when HBR 4 control
is switched off.
Plug in and unplug temperature sensor only when HBR 4 control
is switched off.
Safety circuit is set too low, check mains voltage (mains voltage
must be larger than the nominal voltage - 10%).
Mains switch OFF/ON
RESETbutton / service
RESET button
Mains switch OFF/ON / service
Set safety temperature higher
Mains switch OFF/ON
Allow the device to cool down, then refill with medium.
Mains switch OFF/ON
Mains switch OFF/ON. When switching on, a calibration is auto-
matically carried out.
Mains switch OFF/ON
Service
Service
20