Nordmann es4 4, Инструкция по установке и эксплуатации

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7 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 examina-
tion of the entire system. Often, the steam hose connection has not been
properly executed, or the fault lies with the humidity control system.
7.1 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 tak-
ing necessary measures. Such malfunctions are not indicated in the nor-
mal 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 malfunction, 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.
The error code can be queried in the info mode . Press drain/info key
at least 3 seconds to enter the info mode. In the info mode the number
of flashes of the red LED indicates the decade of the error code while the
number of flashes of the yellow LED indicates the digit of the error code
(refer to chapter 5.3.1 for further information regarding the info mode).
Examples:
Normal operation
mode
red LED lights yes no yes yes
Info mode
red LED flashes .. –– 2x 2x 3x
yellow LED flashes .. 2x 1x 1x 7x
Error code E2 W21 E21 E37