2. Remove the four screws (1) from the burner.
3. Remove the burner.
4. Fit the new burner with a new seal.
5. Make sure that the cutouts in the seal and the burner
are situated above the burner flange sight glass.
6. Install the compact thermal module. (→ Page 28)
9.9.2 Replacing the PCB and/or the display
Note
If you are replacing only one component, the set
parameters are transferred automatically. When
the product is switched on, the new component
adopts the previously set parameters from the
unreplaced component.
1. Disconnect the product from the power mains and make
sure that it cannot be switched back on again.
Conditions: Replacing the display or PCB
▶ Replace the PCB or display according to the assembly
and installation instructions supplied.
Conditions: Replacing the PCB and display at the same time
▶ Replace the PCB and display according to the assembly
and installation instructions supplied.
◁ If you replace both components at the same time, the
product switches to fault mode and displays the fault
message F.70 after it is switched on.
▶ In the second diagnostics level under the diagnostics
code d.93, enter the number of the product type.
▶ Confirm your setting.
◁ The electronics are now set to the product type and
the parameters of all diagnostics codes are set to
default settings.
▶ Make the system-specific settings.
9.10 Completing repair work
▶ Check that the product works correctly.
10 Decommissioning the product
▶ Switch off the product.
▶ Disconnect the product from the power mains.
▶ Close the gas isolator cock.
▶ Drain the product. (→ Page 28)
11 Recycling and disposal
Disposing of the packaging
▶ Dispose of the packaging correctly.
▶ Observe all relevant regulations.
12 Customer service
To ensure regular servicing, it is strongly recommended
that arrangements are made for a Maintenance Agreement.
Please contact Vaillant Service Solutions for further details:
Telephone: 0330 100 3461
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