Biddle HR 25 - Page 63

HR MANUAL ERRORS
Manual version 4.1 (26-07-2018)
en-63
en
See also:
2.7 "Connecting the unit to Modbus" on page 21
2.13 "Switching on and checking operation" on page 29
6.2 "Replacing the filter" on page 64
With automatic CO
2
control:
The unit functions differently
from expectations.
The CO
2
settings are different than
expected.
Check the CO
2
settings (register
addresses 351/352/353 of b-touch menu
62. Automati
c CO2 control)
CO
2
is not designated as the control
system for the automatic control.
Restore the factory configuration
(menu > Maintenance > Factory config-
uration)
The CO
2
sensor is not recognised. Check the connection of the CO
2
sen-
sor.
The unit is making a lot of
noise.
The filter(s) is/are dirty. Clean or replace filter(s).
A component is loose. Check the unit:
• are the inspection doors closed?
• are the rubber seals still in g
ood
condit
ion?
P
ROBLEM PROBABLE CAUSE WHAT TO DO