Fault messages and faults 9
19
Days after starting the func-
tion
Target flow temperature for
this day [°C]
4
40
5
45
6 - 12
45
13
40
14
35
15
30
16
25
17 - 23
10 (frost protection function,
pump in operation)
24
30
25
35
26
40
27
45
28
35
29
25
The display shows the current day and the target flow tem-
perature. You can manually set the current day.
The day is always changed at 00:00, irrespective of when
the function starts.
After a mains Off/On, screed drying starts with the last active
day.
The function ends automatically when the last day of the
temperature profile has elapsed (day = 29) or if you set the
start day to 0 (day = 0).
8.16
Changing the code for Installer level
Menu
→
Installer level
→
Change code
–
This function allows you to change the access code for
the "
Installer level
" operating level.
If the code is no longer available, you must reset the control-
ler to the factory setting in order to obtain access to Installer
level again.
9
Fault messages and faults
9.1
Fault messages
If a fault occurs in the heating installation,
will appear in
the display together with a fault message.
You can also read all current error messages under the fol-
lowing menu point:
Menu
→
Installer level
→
System configuration
[
System
--
--]
→
Fault status
–
If there is a fault, the status
Fault list
is displayed. In this
case, the right-hand selection button has the function
Display
. Press the right-hand selection button to display
a list of fault messages.
Note
Not all fault messages in the list will appear auto-
matically on the basic display.
Fault messages (
→
Appendix C.1)
Faults (
→
Appendix C.2)
10 Decommissioning
10.1
Replacing the product
1.
Decommission the heating installation if you want to
replace the product.
2.
Decommission the heat generator, as described in the
heat generator's installation instructions.
10.1.1 Removing from the wall
1.
Insert the screwdriver into the slot on the wall-mounting
base .
2.
Carefully lever the controller off the wall-mounting base.
3.
Disconnect the eBUS line from the pin header on the
controller and from the terminal block on the heat gen-
erator.
4.
Unscrew the wall-mounting base from the wall.
10.1.2 Removing from the heat generator
1.
If required, open the front panel on the heat generator.
2.
Carefully remove the controller from the heat generat-
or's electronics box.
3.
Disconnect the 6-pin edge connector at slot X41 on the
heat generator.
4.
If required, close the front panel on the heat generator.
11 Customer service
To ensure regular servicing, it is strongly recommended
that arrangements are made for a Maintenance Agreement.
Please contact Vaillant Service Solutions for further details.
Vaillant Service Solutions: 03 30
100
‑
31 43
0020200781_01
VR
C
700/2
Installation instructions
