FWB-C
TeCHniCAL MAnuAL
6
3.2 TROUBLESHOOTING
if the unit is not working properly, before calling a service engi-
neer carry out the checks indicated in the table below.
if the problem cannot be solved, contact your dealer or the near-
est service centre.
PROBLEM
CAUSE
SOLUTION
The unit fails to work
No power supply
Restore the power supply
The automatic safety cutout has tripped
Call a service centre for assistance
The on/off switch is on
Start the unit by moving the switch to ON
The unit provides insufficient cooling
or heating
The air filter is dirty or clogged
Clean the air filter
An obstacle is obstructing the air intake or outlet
Remove the obstacle
Air is trapped inside the heat exchanger
Call the installer for assistance
There are open windows and/or doors
Close windows and/or doors
The minimum speed has been selected
Select medium or maximum speed
The unit “leaks” water
The unit has not been installed with the correct inclination
Call the installer for assistance
The drainage outlet is clogged
Call the installer for assistance
3.3
ASSEMBLY OF UNITS
Mounting the unit
insert the vibration dampers provided in the 4 slots indicated for
ceiling installation
Fasten the base unit to the ceiling or wall using at least 4 of the
8 slots provided.
Ū it is recommended to use 8MA threaded bars plus screw an-
chors of adequate capacity to bear the weight of the unit,
and to prepare the positioning of the unit using 3 8MA bolts
(2 in the lower part, 1 in the upper part as shown in fig-
ure p. 6) and two washers for each bar. Before tightening
the lock nut, adjust the main nut so as to assure that the unit
is properly inclined so as to facilitate condensate drainage
(figure p. 6). To obtain the proper inclination, tilt the unit
so that the intake side is slightly lower (approximately 10
mm) than the outlet side. Make the plumbing connections
to the heat exchanger and, where the cooling function is to
be used, to the condensate drainage outlet. use one of the
two tray drain outlets, which can be seen on the outside of
the unit side panels.
Ū To connect the unit to the drainage line, use a flexible rub-
ber hose and secure it to the pre-selected drain pipe (ø 3/8'')
using a metal clamp (use the drain outlet situated on the
plumbing connection side).
Ū
» Ceiling installation unit
1x8MA
2x8MA
» Condensate discharge proper inclination
10
