Westen Boyler Condens 24, Instruction Manual For Users And Fitters

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7107919.02 (1-09/13)
53
Fumes outlet obstructed
Check that the drainage pipe is free from obstructions.
Switch off the electric power supply to the boiler for a few
seconds.
55
Electronic board not calibrated
Activate the automatic calibration function described in the
spare parts instructions sheet.
83…87
Communication problem between boiler board and control
unit. Probable short circuit on wiring.
Check the wiring between the Ambient Unit and the
electronic board or RF link.
92
Fumes fault during calibration (probable fumes
recirculation)
Check for any recirculation of fumes. Activate the automatic
calibration function described in the paragraph YEARLY
MAINTENANCE – REPLACING COMPONENTS.
109
Air in boiler circuit
(temporary fault)
Check pump operation (unscrew the front cap and release
the pump impeller with a screwdriver).
Check the pump power input wiring.
110
Safety thermostat tripped due to overtemperature (pump
probably blocked or air in heating circuit).
Check pump operation (unscrew the front cap and release
the pump impeller with a screwdriver).
Check the pump power input wiring.
Check that the limit thermostat is undamaged and replace it
if necessary.
Check the continuity of the limit thermostat wiring.
117
Pressure in hydraulic circuit too high (> 2,7 bar)
Check that the pressure in the system is correct; See the
FILLING THE SYSTEM section.
118
Pressure in hydraulic circuit too low
If the pressure in the CH circuit is < 0.5 bar, perform filling
(see the FILLING THE SYSTEM section).
Check the hydraulic pressure switch works correctly .
125
No circulation safety trip
(control performed via a temperature sensor)
See the actions indicated in E109
128
No flame
Check the flame sensing electrode is in good condition
and correctly positioned (see the ANNUAL SERVICING -
POSITIONING THE ELECTRODES section).
Check the wire is uninterrupted and makes good contact
with the flame sensing electrode and the ignition switch.
See the actions indicated in E92
129
Loss of flame at ignition
Check the flame sensing electrode is in good condition
and correctly positioned (see the ANNUAL SERVICING -
POSITIONING THE ELECTRODES section).
Check the wire is uninterrupted and makes good contact
with the flame sensing electrode and the ignition switch.
Check for any recirculation of fumes.
130
Fumes NTC tripped due to overtemperature
Check the heat exchange of the water/ fumes exchanger:
insufficient circulation or presence of scale.
Check the fumes NTC probe (***).
133
Ignition failure (5 attempts)
Check that the gas valve is open and there is no air in the
gas supply circuit.
Check the gas supply pressure.
Check the wire is uninterrupted and makes good contact
with the flame sensing electrode and the ignition switch.
See the actions indicated in E92.
Check correct operation of the condensate drainage.
134
Gas valve blocked
Check the gas supply pressure.
Check the integrity and position of the sensing and ignition
electrodes and their wiring (see the ANNUAL SERVICING -
POSITIONING THE ELECTRODES section).
If necessary, replace the electronic board.
135
Internal board error Replace the electronic board.
154
Delivery/return probe control test See the actions indicated in E109
160
Fan fault
Check correct operation of the fan.
Check that the fan power supply wiring is connected to the
electronic board.
178
Intervention of safety thermostat for excess temperature in
low temperature system
Check correct operation of the pump and the water
circulation in the low temperature system.
Check the pump power input wiring.