A
LNOR
®
vent
�
lat
�
on systems
�
s a legally protected trademark and techn
�
cal patent. All r
�
ghts reserved.
User’s manual of recovery vent
�
lators HRU-M
�
n
�
stA
�
r-W-450
Control
Outdoor a�r temperature
There �s no pre-heater.
Pre-heater �s off.
Pre-heater �s on.
Indoor a�r temperature
Set temperature
There �s no heater.
Heater �s off.
There �s no by-pass.
By-pass �s off.
By-pass �s on.
Heater �s on at f�rst stage.
Heater �s on at f�rst and
second stage.
There �s water co�l. It �s off.
Cool�ng co�l �s on.
Heat�ng co�l �s on.
No fa�lure, freez�ng scenar�o �s off.
BMS and TIMER �s
not adjusted.
F�lter d�rty
BMS �s on.
TIMER �s on.
Freez�ng scenar�o �s on.
Dur�ng a fa�lure s�tuat�on, the
code “ERR” and �ts code w�ll be
seen on screen.
1. Screen Symbols (Ma�n Screen)
ww
w.
ve
nt
�l
at
�
on
-a
l
no
r.c
o.
uk
19
