GB
The fault display is automatically reset. The
ventilation unit runs at the start-up ventilation
level.
In the case of a power outage, open
i
the shutters to avoid any negative
pressure in the room.
Code
Error description
1
Supply air fan below
nominal speed
2
Exhaust fan below
nominal speed
3
I
supply air
max
exceeded
4
I
exhaust air
max
exceeded
5
I
supply air
min
not reached
6
I
exhaust air
min
not reached
7
Short circuit in the
supply air fan
connection terminals
8
Short circuit in the
exhaust fan
connection terminals
9
Supply voltage,
24 V
If the ventilation unit is dirty, it can
i
happen that it gets louder and also
conveys less air.
In such cases, have the ventilation
unit serviced and cleaned by a
specialist installer. Make sure that the
condensation run-off with extension
hose is also cleaned.
8.3 RLS 5 Fault codes
● Call on the services of a trained
electrician any time there is a fault.
● Repairs should only be carried out
by a trained electrician.
Faults are displayed through fault codes
E1 to E10.
Switch the mains supply off.
Fix the fault.
52
Possible cause
Fan is dirty / is
sticking
Fan is dirty / is
sticking
Fan is sticking /
is defective
Fan is sticking /
is defective
Break in a cable /
fan defective
Break in a cable /
fan defective
Break in a cable /
fan defective
Break in a cable /
fan defective
No mains supply /
Loose terminal
connection
Switch the mains supply back on.
Fault message E1 to E10 appears on the
graphical display. Reset the fault display.
Press
.
Confirm "Reset fault message?" with
on YES. CONTINUE
The ventilation unit starts ventilation level
selected through the week program or at the
last ventilation level selected manually.
In the case of a power outage, open
i
the shutters to avoid any negative
pressure in the room.
Code Error description
E1
Supply air fan
status cable
E2
Exhaust air fan
status cable
E3
I
supply air
max
exceeded
E4
I
exhaust air
max
exceeded
E5
I
supply air
min
not reached
E6
I
exhaust air
min
not reached
E7
Short circuit in the
supply air fan
connection
terminals
E8
Short circuit in the
exhaust fan
connection
terminals
9
Supply voltage,
24 V
If the ventilation unit is dirty, it can
i
happen that it gets louder and also
conveys less air.
In such cases, have the ventilation
unit serviced and cleaned by a spe-
cialist installer. Make sure that the
condensation run-off with extension
hose is also cleaned.
Possible cause
Break in a cable /
fan defective
Break in a cable /
fan defective
Fan is sticking /
is defective
Fan is sticking /
is defective
Break in a cable /
fan defective
Break in a cable /
fan defective
Break in a cable /
fan defective
Break in a cable /
fan defective
No mains supply /
Loose terminal
connection