Westen Boyler Condens 24, Инструкция для пользователей и установщиков

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7107919.02 (1-09/13) 32
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317 162
Incorrect power supply frequency
Check whether the incorrect electric power supply frequency
is due to causes outside the boiler, in which case contact the
power supply company.
321 163
NTC domestic hot water sensor faulty See the actions indicated in E20
384 164
Parasite flame (internal error) Check correct operation of the gas valve.
385 165
Input voltage too low
Supply voltage V<175V.
Check whether the power supply reductions are due to
reasons other than the boiler. If so, contact the electricity
provider.
CH = central heating
(*) External Sensor: cold resistance value: approximately 1 kΩ @ 25° C (resistance decreases as temperature rises).
(**) NTC delivery, return and DHW sensor: cold resistance value: approximately 10 kΩ @ 25° C (resistance decreases as temperature rises).
(***) NTC fumes probe: cold resistance value: approximately 20 kΩ @ 25° C (resistance decreases as temperature rises).
In the event of a fault, the display backlighting indicates the error code. 5 reset attempts can be performed after which the
boiler shuts down. Wait 15 minutes before attempting to reset the boiler again.
16. ADJUSTMENT AND SAFETY DEVICES
The boiler has been designed in full compliance with European reference standards and in particular is equipped with the following:
• Limit thermostat
Thanks to a sensor placed on the CH flow line, this thermostat interrupts the flow of gas to the burner if the water in the primary
circuit overheats.
It is forbidden to disable this safety device
• NTC fumes sensor
This device is positioned on the fumes-water exchanger. The electronic board stops gas from flowing to the burner in case of over
heating.
It is forbidden to disable this safety device
• Flame ionisation detector
The flame sensing electrode guarantees safety of operation in case of gas failure or incomplete ignition of the main burner. In
these conditions, the boiler blocks.
• Hydraulic pressure switch
This device allows the main burner to be ignited only if system pressure is higher than 0.5 bars.
• Pump post-circulation
The electronically-controlled pump post-circulation function lasts 3 minutes and is enabled, in the heating mode, if the ambient
thermostat causes the main burner to go out.
• Antifreeze device
The electronic boiler management system includes an "antifreeze" function for the heating and DHW systems which, when flow
temperature falls below 5° C, operates the burner until a flow temperature of 30° C is reached. This function is enabled when the
boiler is switched on, the gas supply is open and the system is correctly pressurised.
• Anti-block pump function
If no heat demand is received in the heating and/or DHW modes for 24 consecutive hours, the pump will automatically start and
operate for 10 seconds.
•
Three-way valve anti-blockage function
If no heat demand is received for a period of 24 hours, the three-way valve performs a complete switching cycle.
• Hydraulic safety valve (heating circuit)
This device is set to 3 bar and is used for the heating circuit. Connect the safety valve to a drain trap. Do not use it to drain the
heating circuit.
• Heating pump pre-circulation
In case of a heat demand in the heating mode, the appliance can pre-circulate the pump before the burner is ignited. This pre-
circulation phase last from a few seconds to a few minutes, depending on the operating temperature and installation conditions.