0020244998_04 ecoTEC plus Installation and maintenance instructions 47
3. Remove the electronics box with the shift-load cylinder
PCB (1) from the appliance slot.
4. Open the electronics box and remove the plug from the
PCB.
5. Install the new PCB in reverse order.
6. Start up the product.
13.7 Completing repair work
1. Establish the power supply.
2. Switch the product back on if this has not yet been
done. (→ Page 28)
3. Install the front casing.
4. Open all service valves and the gas stopcock.
13.8 Checking the product for leak-tightness
▶ Check that the product is leak-tight. (→ Page 34)
14 Decommissioning
14.1 Temporarily decommissioning the product
▶ Press the on/off button.
◁ The display goes out.
▶ Close the gas stopcock.
▶ For products with domestic hot water generation and
products with a connected domestic hot water cylinder,
you must also close the cold-water isolation valve.
14.2 Permanently decommissioning the product
▶ Press the on/off button.
◁ The display goes out.
▶ Disconnect the product from the power grid.
▶ Close the gas stopcock.
▶ Close the cold-water isolation valve.
▶ Drain the product. (→ Page 39)
15 Recycling and disposal
Disposing of the packaging
▶ Dispose of the packaging correctly.
▶ Observe all relevant regulations.
▶ For detailed information refer to www.vaillant.co.uk.
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