Heidolph MR Hei-Tec - Manual (Page 32)

24
Error
code
Mode Cause Consequence Measure
„E21“ * a. Temperature sensor
dropped from the medi-
um.
 Position the tempera-
ture sensor at the
measuring point.
 Perform a reset.
b. Cool medium is refilled
when heating function is
switched on and tempera-
ture sensor is connected.
(IMPORTANT: Only refill the
cool medium when the heat-
ing function is switched off).
 Perform a reset.
„E22“ * a. Temperature sensor lo-
cated outside of the me-
dium when switching on
the heating.
 Position the tempera-
ture sensor at the
measuring point.
 Perform a reset.
b. The temperature on the
sensor of the temperature
sensor is too low during
the first 10 minutes.
c. For physical reasons, a
temperature increase is
not possible.
 Reduce the medium
quality or optimize heat
conduction.
„E23“
(o
n
ly
i
n
Pr
eci
se
-M
o
d
e)
The actual temperature ex-
ceeds the set temperature on
the sensor of the temperature
sensor by more than 25°C:
a. Temperature control de-
fective.
b. Exothermic reaction.
c. Test setup not optimal.
 Check test setup.
 Please contact our
Technical Service.
„E33“ Heating button defective.  Please contact our
Technical Service.
„E34“ Stirring button defective.
„E35“ Hei-Guide rotary-push button
defective.
„E41“ Motor defective. Heating function off.
Stirring function off.
„E51“,
„E52“,
„E53“ a. Sensor break.
b. Temperature sensor is
connected or disconnected
whilst the heating function
is switched on.
(IMPORTANT: The tempera-
ture sensor must only be
connected or removed when
the heating function is
switched off)
Heating function off.  Replace temperature
sensor (only in case of
"a".).
 Switch off the device.
 Connect temperature
sensor (see chapter
"Installation
").
 Switch on the device.
* The monitoring of this safety function can be disabled by switching off the Safety Plus function (see chapter
"Operation" - "Heating" - "Safety Plus (MR Hei-Tec)".