EN-111B_f.1245
15
Fault finding
Symptom
Reason
Action
Indicators on control panel
are off
lack of device's 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 (1.5bar
Cold)
pressure sensor failure
switch the controller to pressure pre-
view, if display E indicates "--" contact
authorised service
G indicator flickers
pump blocked or seized
unblock pump's rotor
ack of medium's flow through the
boilerboiler's blockage
air locked central heating system, vent
the installation, pump and boiler &
re-set pressure
check water quality 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
F indicator is off (in winter
mode), room thermostat
indicates heating on
check room thermostat is providing
check programmer/thermostat. linked
out RT & MA if no response, change
PSK Controller
continuity across RT connection
contact authorised service
I indicator flickers
failure of inlet temp. sensor, heating
blockage
contact authorised service
J indicator flickers
failure of inlet temp. sensor, heating
blockage
contact authorised service
F 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
H indicator flickers
failure of outside temp. sensor
contact authorised service
L indicator flickers (red)
failure of DHW temp. sensor
contact authorised service
