33 Faults and rectification
• Observe cleaning and maintenance intervals.
Clean the ventilation units after 2 years at the
latest, or earlier if necessary.
• Only have ventilation units cleaned by a spe-
cialised installer.
• Only use a dry cloth to clean the internal cover
and slide-in module.
33 Faults and rectification
Call on the services of a trained specialist in
the event of a fault. Faults on the ventilation
unit may only be rectified by qualified electri-
cians. Observe the supplementary safety in-
structions for PushPull ventilation units.
• In the event of a fault, the
• The vertical ventilation level LEDs flash when
the filter is due to be changed.
33.1 Fault messages of RLS 45 K
LEDs flash,
Internal error in RLS room air control
Fault rectification: Ensure that no voltage
is present, restart the control. To perform
a reset of the control, press
Press
Overtemperature/overload of mains ad-
apter
Fault rectification: Check the ambient tem-
perature and allow the mains adapter to
cool down.
No communication or failure of the ex-
ternal power units/RLS or ventilation
units
LED lights up.
Fault LED = On
+
for 5 seconds.
Fault rectification: Check connection to the
LT/RLS. Check the settings in the soft-
ware (e.g. activated LTs that are not con-
nected). Incorrect addressing (e.g. two
slaves with the same address).
No communication and/or failure of the
sensors (RS 485, I2C)
Fault rectification: Check connection to the
sensors. Check settings in the software
(activated sensors that are not connec-
ted).
Internal system error – RLS slave
power unit / ventilation unit
Fault rectification: Switch off the voltage.
No communication with the EnOcean
module (PP 45 EO)
Fault rectification: Check wiring. If the con-
nection is correct, the error disappears.
No communication with taught-in
sensor
Fault rectification: Check cable connection
to taught-in sensor.
34 Spare parts
Important for orders: When ordering spare
parts, state the article number as well as the
unit type and serial number of the ventilation
unit.
For inquiries, contact
Maico Elektroapparate-Fabrik GmbH
Steinbeisstraße 20
78056 Villingen-Schwenningen
Germany
Phone +49 7720 694 445
Fax +49 7720 694 175
E-mail: ersatzteilservice@maico.de
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