Operation - Control - Flexit L4 X User Manual

3 Operation - Control

The speed of the fans in the unit is
controlled from a separately mounted SP30
control switch. Depending on the operating
situation, the fan speed is set to the desired
level.
MIN stage: Used when less ventilation than
normal is required.
NORMAL stage: Normal operating ventilation.
This is the position for daily
operation.
MAX stage: Used when increased ventilation
is required in wet rooms or
throughout the fl at. Must be
used during and for a while after
showering and clothes drying, for
example, to avoid condensation
in the ducts.
SP30 Control Switch for Electronic Automatic
Control with a Thermoguard
This contains the following functions:
- Right pressure switch (fan symbol) to choose
between min, normal and max speeds with an
indicator lamp to show which speed stage is active.
- Left pressure switch (+ symbol) to choose heating
OFF/ON. This switch is used to switch heating off/on
(disconnected during the warm part of the year).
The heating thermostat (item 4/Chap. 6 - see
label on page 2) is factory-set to 20°C in the unit.
It is located outside the unit (on the top of the
unit) and should not be set to over 25°C. It can be
adjusted with a fl at screwdriver. The sensor for the
thermostat is located in the supply air duct. Some
heat loss up to the valves must be expected where
ducts pass through a cold environment.
- Red lamp (!): Slow fl ash: Filter must be
replaced (provided that a
pressure guard is installed).
Fast fl ash: Overheating
thermostat triggered or
thermoguard not connected.
Permanently on: Both errors
- Green lamp (+): This lights when the heating
switch is in the ON position.
- Yellow lamp (°C): This lights when the heating is
active (the element is heating).
Red
Green
Yellow
If the unit is in temporary automatic frost protection
mode in the winter, the unit will not react to a change in
speed before the frost protection function has ceased.
If there is a power cut, the until will auto-
matically be set to Normal position and with
active heating when it restarts. This means
that the heating element will heat if there is
a need for heating.
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