Westen Quasar E - Page 36

7113156.01 (1-05/13) 36
I N S TA L L E R S e c t i o n ( e n )
CODE
DISPLAYED
FAULT POSSIBLE REASON SERVICE ACTION
E05 Flow sensor failure. • CH ow NTC probe faulty (circuit
open or shorted).
• CH ow probe wiring interrupted
or shorted.
• Check the CH ow NTC probe (*).
• Check the continuity of the CH ow probe wiring.
• Make sure the wiring has not shorted.
E06 DHW sensor fault. • DHW ow NTC probe faulty
(circuit open or shorted).
• DHW ow probe wiring
interrupted or shorted.
• Check the DHW NTC probe (*).
• Check the continuity of the DHW probe wiring
• Make sure the wiring has not shorted.
E07 Fumes NTC probe fault. • Fumes NTC probe faulty (circuit
open).
• Fumes probe wiring interrupted.
• Check the fumes NTC probe (**).
• Check the continuity of the fumes probe wiring
E08 Error in the ame
amplication circuit.
• The electronic board is not
earthed.
• Electronic board faulty.
• Check the continuity of the earth connections between
the electronic board (X4 connector) and the power
supply terminal block.
E09 Error in the gas valve
safety circuit.
• Electronic board faulty. • Replace the electronic board.
E10 No hydraulic pressure
switch enable.
• CH circuit pressure < 0.5 bar
• Hydraulic pressure switch faulty.
• Hydraulic pressure switch wiring
faulty.
• If the pressure in the CH circuit is < 0.5 bar, perform
lling (see the FILLING THE SYSTEM section).
• Check the hydraulic pressure switch works correctly.
• Check the continuity of the hydraulic pressure switch
wiring
E22 Switching off due to power
supply reductions.
• Supply voltage V < 162V
(automatic reset at V> 168V)
• Electronic board faulty.
• Check whether the power supply reductions are due
to reasons other than the boiler. If so, contact the
electricity provider.
E25 No water safety trip. • No water in the CH circuit
(pump blocked or exchanger
obstructed).
• CH ow NTC probe faulty.
• Electronic board faulty.
• Check pump operation (unscrew the front cap and
release the rotor with a screwdriver).
• Check the pump power input wiring.
• Check the CH ow NTC probe (*).
• Check whether the exchanger is clogged.
E26 CH delivery NTC probe
overheating safety trip.
• See the reasons indicated in E25. • See the actions indicated in E25.
E27 DHW NTC probe
incorrectly positioned.
• The clip securing the DHW NTC
probe has detached from the
pipe.
• DHW NTC probe faulty.
• 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 (*).
E35 Parasite ame (ame
error).
• The electronic board is not
earthed.
• Flame sensing electrode faulty or
incorrectly positioned.
• Electronic board faulty.
• Check the continuity of the earth connections between
the electronic board (X4 connector) and the power
supply terminal block.
• Check the ame sensing electrode is in good
condition and correctly positioned (see the
POSITIONING THE IGNITION AND FLAME-
SENSING ELECTRODE section).
E36 Fumes NTC probe fault. • Fumes NTC probe faulty
(shorted).
• Fumes probe wiring shorted.
• Check the fumes NTC probe (**).
• Make sure the fumes probe wiring has not shorted.
E40 - E41 Shutdown due to probable
obstruction of air-ue duct
or insufcient gas inlet
pressure.
• 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-ue duct obstructed.
• Gas valve faulty.
• Electronic board faulty.
• 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 ame 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 ue ducts are not obstructed
and have been correctly installed (they must not
exceed the prescribed maximum lengths and must
be tted with the correct diaphragm – see the
INSTALLING THE DUCTS section).
E42 No ame. • Fan not working (fault or no
power).
• Air-ue duct completely
obstructed.
• Electronic board faulty.
• Check that the fan power supply wiring is connected
to the electronic board.
• Make sure the air and ue ducts are not obstructed
and have been correctly installed (they must not
exceed the prescribed maximum lengths and must
be tted with the correct diaphragm – see the
INSTALLING THE DUCTS section).