en-24
en
5
Errors
5.1
Safety instructions
Danger:
d
All work on the inside of the unit may only be
carried out by personnel who are technically
qualified to do so.
Warning:
w
Before you begin: read the safety instructions.
5.2
Resolving simple problems
Danger:
d
The actions in the table below may be
performed by competent staff only.
Fault finding by the installer
P
ROBLEM
L
IKELY
CAUSE
W
HAT
TO
DO
The fan does not work.
The fan is not receiving a power
supply or is faulty.
1. Check the fuse on the electron
-
ics module.
2. Check the wiring between the
PCB and the fan.
3. Replace the fan.
The fan does not operate at a cer
-
tain speed.
The connection for the relevant
speed is not correct.
Check the wiring.
Not all connected units are work
-
ing.
The controller does not communi
-
cate with one or more connected
units.
Check if mains power is supplied to
all connected units..
1. Check the control cables.
2. Check the fuses in all connected
units.
