32
32
If you are unsure of the correctness of steps, do not attempt to perform any repairs and contact profes-
sional service!!!
If you are unable to discover the defect, remove it or the intervention into the device is required, please contact
authorized service!
Behavior of device
Supposed problem
Solution
The device is noisy
Air in the exchanger
Vent the heat exchanger by using the
venting screws.
Shut-off valves on the device are
not fully open.
Open the shut-off valve fully.
Damaged bearings of the fan. The
impeller has its own will, or vice
versa it cannot rotate freely.
It is necessary to dismantle and
change the fan bearings at an author-
ized service, or change the entire fan.
Unbalanced impeller of the fan
rotates freely but when you turn it
on the fan it vibrates.
Dismantle the fan and take it to
professional service for balancing.
Insufficient heating out-
put of the air curtain
Air in the exchanger of the curtain.
Vent the heat exchanger by using the
venting screws.
The exchanger is very dirty.
Dismantle the fan and clean the
exchanger. It is convenient to use hot
water or steam to clean. Do not use
aggressive detergents.
Shut-off or control valves on the
device are not fully open.
Open the shut-off valves fully, check
if the control valve is in the open
position.
Wrong direction of the rotation of
the mixing valve.
Repair the electrical wiring in the
screw terminal of the regulation.
Clogged filter (if installed)
Change the filter or clean the filter.
Thermostat on electric heating rod
is open
Check heating elements
10. TROUBLESHOOTING
