Replacing The Gas Valve; Gas Valve Calibration; Replacing The Electronic Board - Westen quasar E 24 F Manual Para El Usuario

• open a hot water tap that can provide a flow rate of at least 10 litres a minute or make sure there is maximum heat demand;
• slowly increase (not more than 2 points at a time) the value of parameter F48 until the pressure read with the pressure gauge
reaches the value indicated in the burner pressure/injectors table (NOMINAL HEAT OUTPUT); then increase the value of F48
by 2 points;
• set parameters F64 = 0, F18 = 0 and press
• turn off the two-pole switch to disconnect the boiler from the power supply for at least 5 seconds;
• put the front panel back in place.
E) Final checks
• Note down the conversion on the boiler rating plate, specifying the type of gas and indicating that calibration was performed.
If flashes on the display when calibrating the gas valve, disconnect the boiler from the power supply and repeat the
calibration procedure starting from point B).

12.2 REPLACING THE GAS VALVE

When replacing the gas valve, perform the following operations:
• switch off the boiler;
• close the gas inlet valve;
• replace the gas valve;
• open the gas inlet valve and make sure there are no gas leaks;
• perform the operations described in points B, C, D of the GAS CONVERSION section.

12.3 GAS VALVE CALIBRATION

To calibrate the gas valve, perform the operations described in points B, C, D of the GAS CONVERSION section.

12.4 REPLACING THE ELECTRONIC BOARD

When replacing the electronic valve, perform the following operations:
• disconnect the boiler from the mains power supply.
• remove the front panel of the boiler;
• replace the electronic board;
• power the boiler;
• set parameters F03 and F12 as described in the SETTING PARAMETERS section according to the boiler model indicated on
the rating plate.
Electronically calibrate the gas valve as follows:
• connect the positive pressure test point of a pressure gauge, possibly water-operated, to the gas valve pressure test point (Pb);
• open the gas tap and switch the boiler to the Winter mode;
• open a hot water tap that can provide a flow rate of at least 10 litres a minute or make sure there is maximum heat demand;
• press buttons and
• press when "INF" appears on the display. The modulator current percentage flashes on the display;
• press when the pressure gauge measures an increase from 0.2 to 0.4 mbar with respect to the value indicated in the burner
pressure/injectors table (REDUCED POWER); the modulator current percentage appears on the display;
• press when the pressure measured by the pressure gauge reaches the value indicated in the burner pressure/injectors
table (NOMINAL HEATING OUTPUT);
• after calibration, "MEM" flashes on the display for 5 seconds.
If a pressure gauge is unavailable, the automatic gas valve calibration procedure can be performed as follows:
• open the gas tap and switch the boiler to the Winter mode;
• keep the front panel of the boiler closed;
• open a hot water tap that can provide a flow rate of at least 10 litres a minute or make sure there is maximum heat demand;
• press buttons and
• after calibration, "MEM" flashes on the display for 5 seconds.
If one of the following symbols: C01 – C02 – C03 – C04 – C05 appears after calibration, repeat the gas valve calibration
procedure.
Check the mechanical calibration of the gas valve pressure adjuster, as described in the GAS CONVERSION section, before
electronically calibrating the gas valve
to save;
together for 10 seconds. Press
together for 10 seconds. Press
when "ON" appears on the display;
when "ON" appears on the display;
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