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12 Instructions for use ecoTEC / 838402_06
The status displays provide information on the operat-
ing status of the appliance.
Press the “i” button (1) to activate the status displays.
The display (2) then shows the current status code, for
example “S. 4” for burner operation. The table below
explains the most important status codes.
In switching phases, for example on starting up again
after the flame was extinguished, the status message
“S.” briefly appears.
Press the “i” button (1) again to switch the display
back to normal mode.
h
Note
The ecoTEC exclusive display has also cleartext
for a direct information
4.8 Troubleshooting
In the unlikely event that a problem occurs with the oper-
ation of the ecoTEC boiler, the following points should be
checked:
Boiler fails to operate:
Is the gas supply turned on (see 4.3.1)?
Is the water supply turned on (ecoTEC combination
boilers only, see 4.3.1)?
Is there enough water in the heating system (see 4.3.2)?
Is the electrical supply switched ON?
Is the main ON/OFF control in the “ON” position
(switch position “I”, see 4.4)?
Is there an ignition problem (see 4.8.2)?
Hot water operates but no central heating (ecoTEC
combination boilers only)
- Is the heating turned ON (see 4.6.1)?
- Are all external heating controls ON (see 4.6.3)?
a
Caution
Inappropriate modifications can cause damage.
If your boiler still does not operate then please
consult your installer or Vaillant Service Solu-
tions (0870 6060 777).
4.8.1 Problems due to low system water pressure
The device switches to “Fault” if the water pressure in
the heating system is too low. This malfunction is indi-
cated by the fault code “F.22” (dry fire) or “F.23” or
“F.24” (lack of water).
You can only start up the appliance again when the
heating system is sufficiently filled with water.
4.8.2 Ignition problems
If the burner fails to ignite after five attempts, the de-
vice does not start up and switches to “Fault”. This is in-
dicated by the fault code “F.28” or “F.29” in the display.
On ecoTEC plus appliances the display also shows the
flame symbol with a cross through it (1). On ecoTEC pro
appliances, the red LED (2) also lights up.
Automatic ignition can only take place after you manu-
ally reset the fault.
To reset the fault, press the reset button (3) and hold
it down for one second.
3
plus/exclusive pro
Fig. 4.17 Troubleshooting
a
Caution
If the boiler still shuts off after three attempts
of resetting, please consult your installer or
Vaillant Service Solutions.
4.8.3 Flue problems
The appliances are fitted with a fan. If the fan does not
work properly, the appliance will switch itself off.
The display shows the symbols
and and the fault
message “F.32”.
h
Note
If contacting Vaillant Service Solutions please
remember to quote the fault code, as this will
help to pinpoint the fault.
4.9 Turning off the boiler
1
Fig. 4.18 Switching off the appliance
Turn the main ON/OFF control (1) to the „0“ position.
4 Operation
12


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