10 Inspection and maintenance
34 Installation and maintenance instructions ecoTEC plus 0020209591_01
6. Insert the new expansion vessel into the product.
7. Screw the new expansion vessel to the water connec-
tion. Use a new seal for this.
8. Attach the support plate using both screws (1).
9. Fill and purge the product and, if necessary, the heating
installation. (→ Page 23)
9.6.7 Replacing the PCB or the display
Note
If you only replace one component, when the
product is switched on, the new component ad-
opts the parameters that were previously set from
the component that was not replaced.
1. Open the electronics box. (→ Page 18)
2. Replace the PCB or display according to the assembly
and installation instructions supplied.
3. If you are replacing the PCB, remove the coding resist-
ance (1) (plug X24) from the old PCB and plug the plug
onto the new PCB.
4. Close the electronics box.
9.6.8 Replacing the PCB and the display
1. Open the electronics box. (→ Page 18)
2. Replace the PCB and display according to the
assembly and installation instructions supplied.
3. Remove the coding resistance (1) (plug X24) from the
old PCB and plug the plug into the new PCB.
4. Close the electronics box.
5. Press the on/off button on the product. (→ Page 20)
◁ After switching on, the product switches directly to
the menu to select the language. The default lan-
guage setting is English.
6. Select the required language and confirm by pressing
.
◁ You are automatically taken to D.093 to set the
device specific number.
7. Set the correct value for the relevant product type in ac-
cordance with the table below and confirm by pressing
.
Product type number
612 (VU GB 126/5‑5 A) ecoTEC
plus
1
615 (VU GB 156/5‑5 A) ecoTEC
plus
3
618 (VU GB 186/5‑5 A) ecoTEC
plus
4
624 (VU GB 246/5‑5 A) ecoTEC
plus
9
630 (VU GB 306/5‑5 A) ecoTEC
plus
14
637 (VU GB 376/5‑5 A) ecoTEC
plus
20
825 (VUW GB 256/5‑5) ecoTEC
plus
6
832 (VUW GB 326/5‑5) ecoTEC
plus
10
835 (VUW GB 356/5‑5) ecoTEC
plus
13
838 (VUW GB 386/5‑5) ecoTEC
plus
17
◁ The electronics are now set to the product type and
the parameters of all diagnostics codes are set to
default settings.
◁ The installation assistant starts.
8. Make the system-specific settings.
9.7 Completing repair work
1. Establish the power supply.
2. Switch the product back on if this has not yet been
done. (→ Page 20)
3. Install the front casing.
4. Open all service valves and the gas isolator cock.
5. Check that it works correctly and is leak-tight.
(→ Page 27)
10 Inspection and maintenance
▶ You must carry out an annual inspection of the product.
The annual inspection can be effectively performed
without removing components by requesting data from
the DIA system, carrying out the simple visual checks in-
dicated in the table in the appendix and performing a flue
gas measurement. The maintenance intervals and their
scope are determined by the heating engineer based on
the condition of the boiler found during the inspection. All
inspection and maintenance work should be performed in
the order specified in the table in the appendix.
Inspection and maintenance work – Overview
(→ Page 57)
During any inspection and maintenance or after change
of parts of the combustion circuit, the following must be
checked:
– The boiler has been installed in accordance with the rel-
evant installation instructions.
– The integrity of the flue gas installation and flue seals is
in accordance with the relevant flue installation instruc-
tions enclosed.
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