13
Unlocking
With malfunction of the fan-
assisted air heater, it can be
manually unlocked directly on the
unit. There is a reset button for
this purpose on the rear side of the
unit.
Press and release the reset button
to unlock the unit.
The red LED extinguishes and the
unit resumes its normal operation.
The installer can, if necessary,
reposition the reset button in
the room and connect it to the
contacts 6-9 of the terminal block
M1 in the burner cabinet.
See the instructions for the installer
for the electrical connections.
To reset the fault F6, the power
supply of the unit must be
switched off and on again.
Operation with electronic
temperature regulation
ATR-6
The units operates fully
automatically through a self-
monitoring electronic control
PCB, which is responsible for all
monitoring and control functions
of the unit.
The electronic temperature
regulation ATR-6, which is also
microprocessor-controlled, is
intended for the regulation of the
room temperature.
The electronic temperature
regulation and the control PCB
monitor all control and regulation
functions, whereas the flame
monitoring unit and the safety
thermostat assume the safety
functions.
Features:
■
Week programme
■
4 different temperature
settings [T1, T2 , T3 and frost
protection] possible per day
■
Basic programme stored
■
Temporary override of the
adjusted temperature
■
Automatic and manual
operation, timer programme
■
Frost protection
■
Automatic output regulation of
the unit corresponding to the
heat requirement
■
Operation display
■
Display of faults and
malfunctions
■
Reset button
■
Operation without batteries
■
Two-wire connection without
polarity
F4 - Sensor defective or not
connected - the value of the
sensor lies beyond the range
of measurement; both at
NTC1 (supply air) as well as
NTC2 (room air).
F6 - Malfunction of the control
PCB because of continuous
and repeated unsuccessful
ignition attempts of the unit
for a predetermined length
of time. In the event of this
malfunction, the LED also
illuminates to signalise a fault
that is present directly at the
control PCB. For the resetting
procedure, see comments in
the section on resetting.
F8- The control PCB has
transmitted the start signal to
the flame monitoring unit, but
the signal of the successful
start has not been received;
possible flame monitoring unit
defect.
The faults F1 and F2 are caused by
safety devices and therefore are
permanent:
The fault persists when switching
off and restarting the mains
voltage and can only be unlocked
manually.
The faults F3, F6 and F8 must be
manually unlocked or by switching
the mains voltage on and off again
for the supply of the unit.
The fault F4, on the other hand,
resets itself:
After remedy of the cause of fault,
the reset takes place automatically.
If the unit remains disabled
after two or three renewed
ignition attempts, customer
service should be notified.
ATTENTION
If a fault type F6 is present
on the unit, the red LED is
continuously lit and the unit
is switched off. If the unit
does not restart when pressing
the reset button (unlock), the
sensor remains disabled.
NOTE
