Westen quasar E 24 F Manual Para El Usuario página 36

CODE
FAULT
DISPLAYED
E05 Flow sensor failure.
E06 DHW sensor fault.
E07 Fumes NTC probe fault.
E08 Error in the flame
amplification circuit.
E09 Error in the gas valve
safety circuit.
E10 No hydraulic pressure
switch enable.
E22 Switching off due to power
supply reductions.
E25 No water safety trip.
E26 CH delivery NTC probe
overheating safety trip.
E27 DHW NTC probe
incorrectly positioned.
E35 Parasite flame (flame
error).
E36 Fumes NTC probe fault.
E40 - E41
Shutdown due to probable
obstruction of air-flue duct
or insufficient gas inlet
pressure.
E42
No flame.
7113156.01 (1-05/13)
POSSIBLE REASON
• CH flow NTC probe faulty (circuit
open or shorted).
• CH flow probe wiring interrupted
or shorted.
• DHW flow NTC probe faulty
(circuit open or shorted).
• DHW flow probe wiring
interrupted or shorted.
• Fumes NTC probe faulty (circuit
open).
• Fumes probe wiring interrupted.
• The electronic board is not
earthed.
• Electronic board faulty.
• Electronic board faulty.
• CH circuit pressure < 0.5 bar
• Hydraulic pressure switch faulty.
• Hydraulic pressure switch wiring
faulty.
• Supply voltage V < 162V
(automatic reset at V> 168V)
• Electronic board faulty.
• No water in the CH circuit
(pump blocked or exchanger
obstructed).
• CH flow NTC probe faulty.
• Electronic board faulty.
• See the reasons indicated in E25. • See the actions indicated in E25.
• The clip securing the DHW NTC
probe has detached from the
pipe.
• DHW NTC probe faulty.
• The electronic board is not
earthed.
• Flame sensing electrode faulty or
incorrectly positioned.
• Electronic board faulty.
• Fumes NTC probe faulty
(shorted).
• Fumes probe wiring shorted.
• No inlet gas pressure.
• Gas valve modulator wires not
connected.
• Flame sensing electrode faulty or
incorrectly positioned.
• Fumes NTC probe faulty or
incorrectly positioned
• Air-flue duct obstructed.
• Gas valve faulty.
• Electronic board faulty.
• Fan not working (fault or no
power).
• Air-flue duct completely
obstructed.
• Electronic board faulty.
36
SERVICE ACTION
• Check the CH flow NTC probe (*).
• Check the continuity of the CH flow probe wiring.
• Make sure the wiring has not shorted.
• Check the DHW NTC probe (*).
• Check the continuity of the DHW probe wiring
• Make sure the wiring has not shorted.
• Check the fumes NTC probe (**).
• Check the continuity of the fumes probe wiring
• Check the continuity of the earth connections between
the electronic board (X4 connector) and the power
supply terminal block.
• Replace the electronic board.
• 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.
• Check the continuity of the hydraulic pressure switch
wiring
• Check whether the power supply reductions are due
to reasons other than the boiler. If so, contact the
electricity provider.
• Check pump operation (unscrew the front cap and
release the rotor with a screwdriver).
• Check the pump power input wiring.
• Check the CH flow NTC probe (*).
• Check whether the exchanger is clogged.
• Secure the clip of the DHW NTC probe to the pipe
and check the contact with the heat-sensitive surface.
• Check the DHW NTC probe (*).
• Check the continuity of the earth connections between
the electronic board (X4 connector) and the power
supply terminal block.
• Check the flame sensing electrode is in good
condition and correctly positioned (see the
POSITIONING THE IGNITION AND FLAME-
SENSING ELECTRODE section).
• Check the fumes NTC probe (**).
• Make sure the fumes probe wiring has not shorted.
• Check the gas supply pressure (for natural gas
Palim.>9mbar).
• Check the connection of the gas valve modulator
wiring to the electronic board.
• Check that the pressure at the burner has been
correctly calibrated (see the GAS VALVE section).
• Check the flame sensing electrode is in good
condition and correctly positioned (see the
POSITIONING THE IGNITION AND FLAME-
SENSING ELECTRODE section).
• Check the fumes NTC probe (**).
• Make sure the air and flue ducts are not obstructed
and have been correctly installed (they must not
exceed the prescribed maximum lengths and must
be fitted with the correct diaphragm – see the
INSTALLING THE DUCTS section).
• Check that the fan power supply wiring is connected
to the electronic board.
• Make sure the air and flue ducts are not obstructed
and have been correctly installed (they must not
exceed the prescribed maximum lengths and must
be fitted with the correct diaphragm – see the
INSTALLING THE DUCTS section).