11 Inspection and maintenance
28
Installation and maintenance instructions ecoTEC exclusive 0020186710_06
X3
1
X12
1
3.
If you are replacing the PCB, remove the coding res-
istor
(1)
(plug X24) from the old PCB and plug the plug
onto the new PCB.
4.
Close the electronics box.
10.7.7 Replacing the PCB and the display
1.
Open the electronics box. (
→
Page 14)
2.
Replace the PCB and display according to the
assembly and installation instructions supplied.
X3
1
X12
1
3.
Remove the coding resistor
(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 16)
◁
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.
Remove the correct value for the relevant product type
from the technical data in the appendix, and press
to
confirm.
◁
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. (
→
Page 16)
8.
Make the system-specific settings.
10.7.8 Replacing the all-gas sensor
3
2
1
1.
Remove the air intake pipe, see Removing the compact
thermal module (
→
Page 29).
2.
Undo the screws
(3)
just enough so that you can pull
out the all-gas sensor
(1)
by the cable.
3.
Remove the plug
(2)
by pushing in the latching lug.
4.
Reinstall the new all-gas sensor in the reverse order.
10.8
Completing repair work
1.
Establish the power supply.
2.
Switch the product back on if this has not yet been
done. (
→
Page 16)
3.
Install the front casing.
4.
Open all service valves and the gas isolator cock.
10.9
Checking the product for leak-tightness
▶
Check that the product is leak-tight. (
→
Page 21)
11 Inspection and maintenance
▶
Adhere to the minimum inspection and maintenance in-
tervals. The inspection may require maintenance to be
carried out earlier, depending on the results.
Inspection and maintenance work
–
Overview
(
→
Page 46)
11.1
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
Test
programme
Action
T.01
Check internal
pump
Switch the internal pump on
and off.
T.02
Check 3-way
valve
Move the diverter valve to
the heating position or to the
hot water position.
T.03
Check fan
Switch the fan on and off.
The fan runs at maximum
rotational speed.
