Trox Technik X-CUBE X2 compact 2 Operating Instructions Manual page 77

Fault descrip- Cause
tion
Fault with The communication cable to the compo-
Modbus CO2 nent has become detached or cut.
sensor.
No voltage is supplied to the component.
Fault with The communication cable to the compo-
Modbus RAC nent has become detached or cut.
system.
No voltage is supplied to the component.
Parameter The function of the PLC is impaired.
loading error
Factory set- The function of the PLC is impaired.
tings loading
error
Internal fault The integral frequency inverter for the fan
with supply air is not functioning correctly. The AHU has
fan; acknowl- been switched off.
edgement on
AHU may be
necessary.
Internal fault The integral frequency inverter for the fan
with extract air is not functioning correctly. The AHU has
fan; acknowl- been switched off.
edgement on
AHU may be
necessary.
The thermal The airflow above the air heater is too
cut-out for the low. The air heater is overheating.
electric heater
has been trig-
gered.
Remedy
Commission a skilled qualified electri-

cian to rectify the fault.
In this order:
Switch off the air handling unit

and secure it against being
switched on accidentally,
1.4 'Securing the unit against being
switched on accidentally' on page 8 .
Commission a skilled qualified electri-

cian to rectify the fault.
In this order:
Switch off the air handling unit

and secure it against being
switched on accidentally,
1.4 'Securing the unit against being
switched on accidentally' on page 8 .
Commission a skilled qualified electri-

cian to rectify the fault.
In this order:
Switch off the air handling unit

and secure it against being
switched on accidentally,
1.4 'Securing the unit against being
switched on accidentally' on page 8 .
Commission a skilled qualified electri-

cian to rectify the fault.
Commission a skilled qualified electrician
to rectify the fault.
Commission a skilled qualified electrician
to rectify the fault.
Secure the AHU against being

switched on accidentally,
1.4 'Securing the unit against being
switched on accidentally' on page 8 .
Commission a skilled qualified electri-

cian to rectify the fault.
Secure the AHU against being

switched on accidentally,
1.4 'Securing the unit against being
switched on accidentally' on page 8 .
Secure the air handling unit against

being switched on accidentally.
Commission a skilled qualified electri-

cian to rectify the fault.
In this order:
Switch off the air handling unit

and secure it against being
switched on accidentally,
1.4 'Securing the unit against being
switched on accidentally' on page 8 .
AHU X-CUBE X2 compact 2
Faults
List of faults
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77