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Vaillant 242 E - Burners not firing?

Another old boiler where the themostat kicksin the motors start but the flames don't light.
At onepoint we could turn down the heating to get hot water but now we just get the motors but not the flame.

Robert W
January 2010
VaillantHeating, Home Heating SystemsVaillant Firing Boiler
fault on these boilers is the main gas solenoid fails part no 17 0365.this also blows the resistor on the board part no 13 0391.total cost of around £200.There should be 200vdc from the board to the gas valve(grey plug).

paul b gas enginneer
March 2010
May be the heat exchanger needs cleaning.

ab
February 2010
air pressure switch faulty

adam d
January 2010

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