70 Fault elimination
8 Fault elimination
Important! Most operational malfunctions are not caused by faulty equipment but rather by improper
installation or disregarding of planning guidelines. Therefore, a complete fault diagnosis always involves
a thorough examination of the entire system. Often, the steam hose connection has not been properly
executed, or the fault lies with the humidity control system.
8.1 Fault indication
In case of malfunction during operation, the unit control checks whether there is a temporary problem or
whether it can resolve the problem by taking necessary measures. Such malfunctions are not indicated in
the normal operation mode. However an appropriate error code with the status "Warning" is generated.
Note: If the cause of the malfunction disappears of its own accord or if the controls can repair the mal-
function, the alarm will automatically reset.
If the control, after several attempts, fails to solve the problem (number of attempts depends on the type
of malfunction) or if the problem obstructs further operation, the heating voltage is interrupted via the
main contactor. The red LED lights in normal operation mode and an appropriate error code with
the status "Error" is generated.
Theerrorcodecanbequeriedintheinfomode. Press drain/info key at least 3 seconds to enter
the info mode. In the info mode the number of ashes of the red LED indicates the decade of the error
code while the number of ashes of the yellow LED indicates the digit of the error code (refer to chapter
6.3.1 for further information regarding the info mode).
Examples:
Normal operation
mode
red LED lights yes no yes yes
Info mode
red LED ashes .. –– 2x 2x 3x
yellow LED ashes .. 2x 1x 1x 7x
Error code E2 W21 E21 E37
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