Fault Rectification - Maico ER-UP Mounting And Operating Instructions

18. Fault rectification

● Call on the services of a trained electrician
any time there is a fault.
● Repairs should only be carried out by a
trained electrician.
DANGER
Danger to life from electric shock.
 Prior to accessing the connection
terminals, switch off all supply circuits.
Switch off mains fuse, secure against
being accidentally switched back on and
position a visible warning sign.
Fault Cause, measure
Fan output ● Dirty filter.
inadequate. Replace filter.
● Locking hook
engaged.
Engage fan insert correctly.
●
Check diameter of the main
duct, refer to diagram in the
catalogue.
● Supply air cross section
is too small
Increase the supply air
cross section.
VZ, VZ 15, The power on external
VZC, GVZC conductor L connected to
EC, F, H terminal 1 is interrupted
and I models: when the fan is switched off.
No fan overrun.
Connect the fan as per the
wiring diagram.
Terminals 1 and 3 are
VZ, VZ 15,
reversed.
VZC, GVZC
Connect the fan as per the
EC, I models:
wiring diagram.
Fan starts up
immediately
and stops
immediately if
is switched-off.
Check whether the fan
Fan doesn't
insert is correctly inserted.
start up
not
Incorrect duct diameter.
.
Fault Cause, measure
Fan is too loud. ● Dirty filter.
Replace filter.
● Fan insert incorrectly
inserted. Insert fan insert
correctly in accordance with
chapter 14.2.
The main duct Re-calculate pressure
is undersized. losses.
H model does The switch-on point has
not switch from been set too high.
base load to full Use jumper [S] to set a
load operation lower switch-on point.
despite there
being moisture
in the room.
H mode no The switch-off point has
longer switches been set too low.
back to base Use jumper [S] to set a
load operation higher switch-on point. The
or off even after switch-off point depends on
a long period in the corresponding switch-on
full load point.
operation.
Additional Damage to the unit if
consumers connected incorrectly.
connected to Do not connect additional
terminal 4. consumers to terminal 4.
The unit may only be
connected according to the
wiring diagrams in chap. 22.
GVZC EC: Check jumper positions,
No start delay /  chap. 14.2
overrun time
If the fault persists or reoccurs:
Disconnect the fan completely from
the mains power supply. Have error
established and rectified by a trained
electrician.
If you have any questions about
troubleshooting: Service:
+49 7720 6940.
18. Fault rectification
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