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4 Operation

Instructions for use ecoMAX

4.5 Status displays (for maintenance and servicing

work carried out by a qualified service engineer)

• The status displays are activated by pressing the "i" (1)

button.

Fig. B.10 Status displays

The display (2) now shows the corresponding status code,
e.g. "S.4" for burner operation. Please refer to table B.1
(below) for details of the most important status codes. 
• Press the "i" button again to return to normal mode.

During changeover phases, such as when the system
restarts after the flame has been extinguished, the "S"
status message is displayed briefly.

Display

Meaning

S. 0*

No heat requirement

S. 1*

Pump running

S. 3*

Heating system ignition

S. 4*

Burner ignited

S. 5*

Fan and pump overrun

S. 6*

Heating fan run-out

S. 7*

Pump over run

S. 8*

Anti cycling mode (after heating operation)

S. 14**

Burner ignited

S. 20**

Hot water cycle mode

S. 31*

Summer mode

S. 34*

Frost protection mode

Table B.1: Status displays (a complete list of status codes can be

found in the installation and maintenance instructions)

* Heating mode        ** Hot-water mode 

4.6 Resetting the appliance

When a hot water tap or the central heating system
requires heat, the boiler automatically ignites and starts
to operate. If the automatic ignition is not successful

within 5 attempts, then the boiler does not go into ope-
ration and switches to “Lock out”.
This is indicated by a fault code  “F.28” or “F.29” on the
display.
A new attempt to ignite the flame can then only be per-
formed after pressing the “Reset” button.
• Press the “Reset” button (1) and hold for approx. 1 second.

Fig. B.11 Resetting the appliance

Attention!

If the boiler still shuts off after a third attempt,
then please consult your installer or Vaillant

Service Solutions.

The boiler also switches to “Fault” when there is not
enough water in the system. This fault is indicated by
fault code “F.22” “F.23” or “F.24”. 
The boiler can only be placed back in operation after the
heating system has been properly refilled with water.
In the unlikely event of any other fault developing, which
prevents the boiler from operating, the display will also
show other fault codes. If a fault code is displayed please
contact your installer or Vaillant Service Solutions.

Note! 

If contacting Vaillant Service Solutions please
remember to quote the fault code, as this will
help to pinpoint the fault.

4.7 Turning the boiler OFF
4.7.1 To turn OFF the central heating only 

(Summer mode)

• Turn the maximum radiator temperature control knob

used to control the heating supply temperature (1) all
the way to the left.

Note! 

You can switch off the heating operation in sum-
mer, for example, but the boiler will continue to
provide domestic hot water whenever a hot
water tap is opened.

STOP

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0020014608_00GB_032006  08.03.2006 17:15 Uhr  Seite 8

Содержание ecoMAX E SERIES

Страница 1: ...For the user GB Instructions for use ecoMAX Wall hung room sealed fan assisted condensing boilers...

Страница 2: ...display 5 4 2 Initial checks before turning ON 5 4 2 1 Opening the service valves 5 4 2 2 Checking the water contents 6 4 3 Domestic hot water operation ecoMAX 646 and 665 only 6 4 3 1 Obtaining hot...

Страница 3: ...ing from failure to observe these instructions 1 4 Specified use Vaillant ecoMAX appliances are made to fulfil the latest technical specifications and official safety regulations These appliances are...

Страница 4: ...ce agreement with your service agent or Vaillant Ltd Attention The device may only be used for initial operation for testing for continuous operation with the chamber cover closed and with the flue sy...

Страница 5: ...2 shows during nor mal operation current information on the heating system flow temperature Fig B 2 example gives flow temperature of 45 C In the event of a malfunction this temperature display is re...

Страница 6: ...665 only Fig Domestic hot water operation ecoMAX 646 and 665 provides central heating and domestic hot water where a separate indirect hot water cylinder is also incorporated to the system Attention T...

Страница 7: ...e is adjusted the boiler display will show the corresponding water temperature This infor mation appears on the display for about 5 seconds and then the display returns to its normal state current hea...

Страница 8: ...ttempts then the boiler does not go into ope ration and switches to Lock out This is indicated by a fault code F 28 or F 29 on the display A new attempt to ignite the flame can then only be per formed...

Страница 9: ...t illuminated see page 8 Attention If your boiler still does not operate then please consult your installer or Vaillant Service Solutions 0870 6060 777 4 9 Care and maintenance Clean the outer casing...

Страница 10: ......

Страница 11: ......

Страница 12: ...0020014608_00GB 03 2006 Subject to alteration...

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