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HR 12 M
ANUAL
P
P
ROBLEM
ROBABLE CAUSE
The unit does
The building management system is not oper-
not respond
ating correctly.
to the build-
The unit has no communication with the
ing manage-
building management system.
ment system.
The unit func-
The unit is operating in a special mode.
tions differ-
ently from
expectations.
One or more modules are not properly con-
nected.
The unit is not
The filter(s) is/are dirty.
circulating
The fan settings are not properly calibrated.
enough air.
The duct system is giving too much resistance.
An air damper is not working properly.
The connected ventilation unit is not working
properly.
With auto-
The CO
2
matic CO
con-
2
trol:
The unit func-
CO
is not designated as the control system
2
tions differ-
for the automatic control.
ently from
expectations.
The CO
2
The unit is
The filter(s) is/are dirty.
making a lot of
A component is loose.
noise.
Manual version 1.0 (15-07-2018)
settings are different than expected.
sensor is not recognised.
See also:
2.5
2.10
6.2
W
HAT TO DO
Check the building management system.
• Check the building management system.
• Check the wiring.
• Check which mode the unit is operating
in.
• If necessary, set the unit for input 1 to
only emit a signal without adjusting the
operation (register address 337 or b-
...60. Function of
touch menu
• Check the connections of the modules
• Check the operation of the unit. (See
menu > Maintenance > Unit
Clean or replace filter(s).
Calibrate the fan settings properly. see
Calibrate air volume
Resolve problems in the duct system:
• ducts too narrow
• bends too sharp
• blockages
Check the operation of the damper (See
uMaintenanceUnit
check).
Check the operation of the connected units.
Check the CO
settings (register addresses
2
351/352/353 of b-touch menu
CO2
control)
Restore the factory configuration
(menu > Maintenance > Factory configura-
tion)
Check the connection of the CO
Clean or replace filter(s).
Check the unit:
• are the inspection doors closed?
• are the rubber seals still in good condi-
tion?
"Connecting the unit to Modbus" on page 14
"Switching on and checking operation" on page 21
"Replacing the filter" on page 52
en
E
RRORS
inputs).
check)
2.10.5
men-
62. Automatic
sensor.
2
en-51
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