16
Symptom
Reason
Action
the indicators on
control panel are off
lack of boiler power supply
check parameters of power
network and fuses
contact authorised service
A indicator flickers
insufficient pressure (below
0,5 bar)
shift the controller to the pressure
view, increase pressure within the
installation to required level
pressure sensor failure
switch the controller to pressure
preview, if display E indicates "--"
contact authorised service
H indicator flickers
pump's blockage
unblock pump's rotor
lack of medium's flow through the
boiler- boiler's blockage
an air-bound central heating system,
vent the installation, pump and boiler
check patency of CH installation
and clean the filter
failure of pump's power supply
contact authorised service
failure of pump or flow sensor
contact authorised service
G indicator is off (in
winter mode), room
thermostat indicates
heating on
failure of installation that con-
nects room thermostat
check connecting installation
failure of electronic module
contact authorised service
K indicator flickers
failure of inlet temp. sensor, boiler
shifted to failure condition
contact authorised service
L indicator flickers
failure of outlet temp. sensor,
heating blockage
contact authorised service
G indicator flickers and
the boiler doesn't work
failure of installation that connects
master appliance
check connecting installation
failure of electronic module
contact authorised service
EKCO.LN2M and EKCO.
L2M model doesn’t heat
the cylinder
failure of cylinder's temp. sensor
or thermostat
contact authorised service, replace
temp. sensor or thermostat
failure of three-way valve servo-
motor
replace rotor
failure of electronic module
contact authorised service
J indicator flickers
failure of external temp. sensor
contact authorized service
N indicator flickers (red) failure of cylinder water temp.
sensor
contact authorized service
Failures
