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V07-19.0
Message
Description
Alarm class
Electric battery
Alarm message from the electric heating
battery
Check the power supply (electric protection)
and the security thermostat
Call the service engineer when this message
occurs repeatedly
High(A)
Humidifier
Alarm message from the humidifier
Read the failure message on the humidifier
Call the service engineer when this message
occurs repeatedly
High(A)
Supply filter 1: dirty
Supply air filter 1 is dirty; clean / replace
Check, clean or replace the filter
Warning(C)
Return filter 1: dirty
Return air filter 1 is dirty; clean / replace
Check, clean or replace the filter
Warning(C)
Controller
Hardware error message from the controller
Call the service engineer
Danger
AHU module 1 (955)
Hardware error message from the AHU
expansion module 1
Call the service engineer
Danger
Supply fan: feedback
No feedback from the supply fan inverter;
check the inverter and read failure message
on the Inverter
Danger
Return fan: feedback
No feedback from the return fan inverter;
check the inverter and read failure message
on the Inverter
Danger
Table 33:
Alarm messages – AHU controller
Alarm type
Description
NoSensor
No sensor is connected / recognized
OverRange
Measured value is greater than the allowed value; > 10V, > 20mA
UnderRange
Measured value is lower than the allowed value; < 0V, < 4mA
OpenLoop
Measuring circuit is open
ShortedLoop
Measuring circuit is shorted
Other
Not defined error, communication error
ConfigErr
Configuration error, measured value completely outside of allowed
values; << 0 V
MultiFault
Multiple faults on inputs with multiple states; e.g. operating mode
Fault, Alarm
Alarm message from a digital input, contact, freeze protection,
feedback
Dirty
Dirty filter message from a filter with pressure monitoring
HighLimit
Measured value greater than the high limit; e.g. filter pressure too
high
