ermaf RGA 100 ACU Manual Del Usuario página 42

Assistance in the event of
malfunction
WARNING
To avoid harm to persons and animals or damage
to the heater, please observe the following:
– Electric shocks can be fatal! Before working
on possible live components, ensure the unit
is disconnected from the power supply.
– Fault-clearance must only be undertaken by
authorized trained personnel!
– Repairs to components, e.g. the burner con-
trol unit or the combination control, may only
be carried out by the manufacturer. Otherwise,
the warranty will be cancelled. Unauthorized
repairs or incorrect electrical connections, e.g.
the connection of power to outputs, can cause
gas valves to open and the burner control unit to
become defective. In this case, fail-safe opera-
tion can no longer be guaranteed.
– (Remote) resets may only be conducted by
authorized trained personnel with continuous
monitoring of the devices concerned.
▷ In the event of an installation fault, the burner
control unit closes the gas valves and the status
indicator light will be red at the latest after a
restart has been unsuccessful.
▷ The 7-segment display will show an error code
in the form of a letter with a decimal point and
a number alternately indicating a warning. To-
gether with the red status indicator light, this
then constitutes a fault.
▷ Warnings and faults may be cleared only using
the remedies described below.
Internal wiring
▷ To rectify a fault, it is sometimes necessary to
check the internal wiring.
1 Open the housing cover of the burner control
unit.
2 Undo the two screws (M3) using a Phillips screw-
driver and remove the complete plastic cover
from the burner control unit.
RGA100_NF.indd 14
Internal connection diagram
Safety temperature
sensor
Burner fan
Not used
Ignition
Valves
Pressure switch for air
(vane not used)
Bridge
Ionization
Not used
Not used
Burner fan
230 V
Main fan
GB-14
13.09.20 23:10