EN
UAB AMALVA we reserve the right to make changes without prior notice.
54
Message
Possible cause
Elimination
Rotor motor failure
The rotor motor is broken.
Check the rotor motor and replace it if necessary.
Rotor motor overload
The rotor motor is overloaded.
Check the condition of the rotor motor and make
sure that the rotor is not blocked.
Communication error
No communication with the internal components
of the air handling unit (controller extension mod-
ules, frequency converters, fans, etc.) or one /
several of them are broken.
Check internal connections and functioning of
separate components.
Controller failure
Main controller module fault.
Replace the main controller.
The emergency protection of the electrical heater against overheating can
be reset with the RESET button only if the cause of the overheating of the
heater has been clarified and eliminated.
If the unit is shut down and a failure text message is shown on the control
panel, the fault must be eliminated!
Before performing any jobs inside the unit make sure that the unit is
stopped and disconnected from the electrical power supply.
After failure has been eliminated and power supply connected the error messages should be deleted. How-
ever if the failure has not been eliminated, unit either starts operating and after some time it stops again, or it does
not operate and failure message is indicated.
