User Manual

7 Alarm messages

The following alarm messages can be shown in the temperature display:

Error message Cause Elimination

Display overrun

The measured value is too large

and outside the range.

- Check sensor and connecting cable for damage

or short-circuit

- Check whether the correct sensor has been set

or connected

v Chapter 4 “Commissioning the instrument”

Display underrun

The measured value is too small

and is outside the range.

Time for switch-on delay after

power-on has elapsed.

With display over/underrun, the

switch-on delay becomes

ineffective.

h Cancel switch-on delay

with +

Value has fallen below the low

alarm limit

h Depending on the controller type, check whether

the heating or cooling unit functions faultlessly.

h Check whether the installed relay fuse is still in

good working order.

The alarm disappears as soon as the process value goes

above or below the AL limits by the amount of the hysteresis.

Value has gone above the high

alarm limit

These messages are only output to

the temperature display.