Westen quasar E 24 F Manual Para El Usuario página 37

CODE
FAULT
DISPLAYED
E43 Shutdown due to probable
obstruction of air-flue duct
or insufficient gas inlet
pressure.
E50 Shutdown due to fumes
NTC probe tripping for
overheating.
E55 Gas valve not
electronically calibrated
E62 Safety shutdown if the
flame signal or fumes
temperature fail to
stabilise
E65
Safety shutdown if the air-
flue duct obstruction test
fails frequently.
E98 Electronic board
parameters incorrectly
configured
Boiler operating at
reduced power.
Flashing
Scale alarm or incorrect
position of DHW NTC
probe.
Flashing
alternately
CH = central heating
DHW = domestic hot water
(*) DHW NTC and CH delivery probe: cold resistance value: approximately 10 kΩ @ 25° C (resistance decreases as temperature rises).
(**) NTC fumes probe: cold resistance value: approximately 49 kΩ @ 25° C (resistance decreases as temperature rises).
POSSIBLE REASON
• See the causes indicated in E40
- E41
• Input voltage V<180V
(automatically resets at V>185V
or by pressing "R").
• Electronic board faulty.
• Fumes temperature>180°C.
• Insufficient heat exchange on the
water/fumes exchanger.
• Fumes NTC probe faulty.
• Electronic board faulty.
• The electronic board has not
been replaced and the gas valve
has not yet been electronically
calibrated.
• Flame sensing electrode faulty or
incorrectly positioned.
• Fumes NTC probe faulty.
• Electronic board faulty.
• See the causes indicated in E40
- E41.
• The electronic board has been
replaced and not yet calibrated
for the boiler model.
• Parameters F03 and F12 have
not been set or have been
incorrectly set.
• No inlet gas pressure.
• Gas valve modulator wires not
connected.
• Flame sensing electrode faulty or
incorrectly positioned.
• Air-flue duct partially obstructed.
• Gas valve faulty.
• Electronic board faulty.
• Scale in the DHW water/ fumes
exchanger circuit.
• The clip securing the DHW NTC
probe has detached from the
DHW outlet pipe.
• DHW NTC probe faulty.
37
SERVICE ACTION
• See the actions indicated in E40 - E41.
• Check whether the power supply reductions are due
to reasons other than the boiler. If so, contact the
electricity provider
• Check the heat exchange of the water/ fumes
exchanger: insufficient circulation or presence of
scale.
• Check the fumes NTC probe (**).
• Electronically calibrate the gas valve (parameters F45
and F48) as described in the GAS VALVE section
• Check the wire is uninterrupted and makes good
contact with the flame sensing electrode and the
ignition switch.
• 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 (**).
• See the actions indicated in E40 - E41.
• Set parameters F03 and F12 with the values indicated
in the table in the SETTING PARAMETERS section
according to the boiler model indicated on the rating
plate.
• 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).
• 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).
• 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 for the scale in the water/fumes exchanger
(during DHW takeoff, the temperature of the DHW
outlet does not increase, while that of the CH flow
rises rapidly. Moreover, water flow is low as the
exchanger is partly obstructed).
7113156.01 (1-05/13)