14 Decommissioning; Temporarily Decommissioning The Product; Permanently Decommissioning; 15 Recycling And Disposal - Vaillant ecoTEC plus VU 446/5-5 (H-GB) Installation And Maintenance Instructions Manual

13.9.9.1 Replacing the main PCB
B
1. Open the electronics box. (→ Page 28)
2. Undo the two clips (A) on the electronics box.
3. Remove the cover (B) from the electronics box.
B
4. Remove the PCB in accordance with the installation
instructions that are enclosed with the spare part.
5. Pull all of the plugs out from the PCB.
6. Force the fixing tabs (A) apart in order to loosen the
PCB.
7. Remove the PCB (B).
8. Install the new PCB.
9. Plug the plug into the new PCB.
13.9.9.2 Replacing the PCB for the user interface
B
1. Remove the main PCB.
2. Disconnect all of the plugs from the PCB for the user
interface.
3. Force the fixing tabs (A) apart in order to loosen the
PCB for the user interface.
4. Remove the PCB for the user interface (B).
5. Install the new PCB for the user interface.
6. Plug the plug into the new PCB for the user interface.
7. Reinstall the main PCB.
52
13.9.9.3 Replacing the main PCB and control
1. If you are replacing both components at the same time,
the product switches directly to the menu to select the
language after switching on. The default language set-
ting is English.
2. Select the required language.
3. Press OK to confirm this setting.
4. Set the product code D.093 that is on the data plate.
5. Confirm your setting.
A
x 2
◁
◁
6. Make the system-specific settings.
13.9.10 Completing repair work
1. Open the service valve in the cold water pipe.
2. Open all service valves and the gas stopcock.
3. Check the leak-tightness of the gas pipe and the hy-
draulic circuits.
4. Install the front casing. (→ Page 18)
5. Switch on the product. (→ Page 32)
A x 3
6. Check that the product works correctly.
7. Check that the product is leak-tight. (→ Page 39)

14 Decommissioning

14.1
▶
Press the on/off button.
◁
The display goes out.
▶
Close the gas stopcock.
▶
On products with a connected domestic hot water cylin-
der, you must also close the cold-water isolation valve.
14.2
▶
Decommission the product.
▶
Disconnect the product from the power grid.
▶
Close the gas stopcock.
▶
Close the heating stopcocks.
▶
Drain the product. (→ Page 47)
A x 4

15 Recycling and disposal

Disposing of the packaging
▶
Dispose of the packaging correctly.
▶
Observe all relevant regulations.
Validity: Great Britain OR Ireland
▶
For detailed information refer to www.vaillant.co.uk.
Installation and maintenance instructions ecoTEC plus 0020261389_03
element's PCB at the same time
The electronics are now set to the product type
(model) and the parameters for all diagnostics
codes are set to the default settings.
The display automatically restarts with the installa-
tion assistant.

Temporarily decommissioning the product

Permanently decommissioning