Operation Manual
Operating instructions
Controls
M
H
B C D E F
A
G
L
I
Operation mode DHW (M)
For switching on the DHW operation
(indication in display below DHW symbol)
Operation mode heating zone(s) (I)
For setting 4 different heating modes:
Auto (clock): Automatic operation by
time programm
Comfort (sun): 24/7 heating in
comfort mode
Reduction (moon): 24/7 heating in
reduced mode
Standby: heating off, frost protection
activated.
Display (L)
Info mode (G)
Display possibility of following info
without influence on boiler control:
temperatures, operation mode
Heating / DHW, error code.
Room temperature control (C)
for changing room comfort
temperature
for changing setting when
programming.
On/off switch (A)
Position 0:
Boiler and connected electrical
components are not powered.
Frost protection is not secured.
Position I:
The boiler and connected electrical
components are powered and standby
for operation.
Confirmation (OK) (D)
Return (ESC) (B)
These buttons are used for
programming in combination with the
rotary knob.
By pressing the ESC button it‘s possible
to go back one level, changed values
are not taken over by the controller.
By pressing the OK button it‘s possible
to arrive in the next level or confirm
changed values.
Manual mode (E)
This button is used for switching the
boiler into manual mode. In manual
mode all pumps will run and the mixing
valves are no longer controlled, the
burner setpoint is 60°C (indicated by
spanner symbol).
In the display, the spanner symbol is
shown. This manual mode should be
used as a temporary measure to assure
proper functioning of the boiler in case
of a disfunctional controller or wrong
settings, and should in no case be
applied for a longer period.
Deaeration mode (E)
By pressing the manual mode button
longer than 3 seconds, the automatic
hydraulic deaeration is activated e.g.
after first filling the system. During
deaeration the system is put in standby /
protection mode .
The pumps are switched on and off for
several times.
After deaeration, the boiler automatically
returns to normal operation.
Legend:
A On/off switch
B Return (ESC)
C Room temperature control
D Confirmation (OK)
E Manual mode
F Chimney sweeper mode
G Info mode
H Reset button
I Operation mode heating zone(s)
L Display
M Operation mode DHW
Chimney sweeper mode (F)
Used for combustion analysis. By
pressing the button once again, or
automatically after 15 minutes, the
chimney sweeper mode will be
deactivated (indicated by spanner
symbol).
In case a mixing circuit is part of the
heating system, the control continues
normally.
Reset Button (H)
By shortly pressing the reset button a
burner lockout can be cancelled.
Notes:
a After pressing reset once, wait for
ca. 20 seconds (LMU initialising,
error code 132 shows briefly; Gas
flow control input is checked).
b When pressing reset twice, the LMU
controller is locked manually (error
code 153).
Press reset again.
c Pressing reset without error code
triggers error code 153
5