Maico WRG 35, Mounting And Operating Instructions

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The fault display is automatically reset. The
ventilation unit runs at the start-up ventilation
level.
In the case of a power outage, open
the shutters to avoid any negative
pressure in the room.
Code Error description Possible cause
1 Supply air fan below
nominal speed Fan is dirty / is
sticking
2 Exhaust fan below
nominal speed Fan is dirty / is
sticking
3 I
max
supply air
exceeded
Fan is sticking /
is defective
4 I
max
exhaust air
exceeded
Fan is sticking /
is defective
5 I
min
supply air
not reached
Break in a cable /
fan defective
6 I
min
exhaust air
not reached
Break in a cable /
fan defective
7 Short circuit in the
supply air fan
connection terminals Break in a cable /
fan defective
8 Short circuit in the
exhaust fan
connection terminals Break in a cable /
fan defective
9 Supply voltage,
24 V No mains supply /
Loose terminal
connection
If the ventilation unit is dirty, it can
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.

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
the shutters to avoid any negative
pressure in the room.
Code Error description Possible cause
E1 Supply air fan
status cable Break in a cable /
fan defective
E2 Exhaust air fan
status cable Break in a cable /
fan defective
E3 I
max
supply air
exceeded
Fan is sticking /
is defective
E4 I
max
exhaust air
exceeded
Fan is sticking /
is defective
E5 I
min
supply air
not reached
Break in a cable /
fan defective
E6 I
min
exhaust air
not reached
Break in a cable /
fan defective
E7 Short circuit in the
supply air fan
connection
terminals Break in a cable /
fan defective
E8 Short circuit in the
exhaust fan
connection
terminals Break in a cable /
fan defective
9 Supply voltage,
24 V No mains supply /
Loose terminal
connection
If the ventilation unit is dirty, it can
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.
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