Completing Repair Work; 10 Inspection And Maintenance; Function Menu; Electronics Self-Test - Vaillant ecoTEC plus Installation And Maintenance Instructions Manual

10 Inspection and maintenance

9.6.12 Replacing the PCB on the shift-load
cylinder
1. Comply with the assembly and installation instructions
provided with the spare parts.
2. Unscrew the screw from the cover of the shift-load cyl-
inder and remove the cover.
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.
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 53)
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.
–
Visual, the integrity of the boiler combustion circuit and
relevant seals (paying particular attention to the burner
door seal).
36
–
The gas inlet working pressure at maximum rate.
–
The gas flow rates.
–
Correctness of electrical, water and gas connections.
–
Correctness of the water pressure.
–
The condition of the whole system, in particular the con-
dition of radiator valves, evidence of leakage from the
heating system and dripping taps.
▶
Correct any faults before proceeding.
1
10.1

Function menu

Menu → Installer level → Test programs → Function menu
The function menu allows you to actuate and test individual
components in the heating installation.
Display
T.01
T.02
T.03
T.04
T.05
T.06
T.08
10.2

Electronics self-test

Menu → Installer level → Test programs → Electronics
self-test
You can use the electronics self-test to check the PCB.
10.3

Removing the compact thermal module

Installation and maintenance instructions ecoTEC plus 0020209593_01
Test
Action
programme
Check internal Switch the internal pump on
pump and off.
Check 3-way Move the diverter valve to
valve the heating position or to the
hot water position.
Check fan Switch the fan on and off.
The fan runs at maximum
rotational speed.
Check cylinder Switch the cylinder charging
charge pump pump on and off.
Check circula- Switch the circulation pump
tion pump on and off.
Check external Switch the external pump on
pump and off.
Checking the Product starts up and
burner switches to minimum load.
The flow temperature is
shown in the display.
Note
The compact thermal module consists of five main
components:
– Speed-regulated fan,
– Gas valve including support plate,
– Venturi including mass flow sensor and gas
connection pipe,
– Burner flange,
– Premix burner.