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Vaillant VRC 700F-4 Manual

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9 Fault messages and faults
24 Installation instructions 0020237057_00
8.16 Selecting the expansion module for sensor/
actuator test
Menu → Installer level → Sensor/actuator test → [Select
Unit]
– This function allows you to select a connected expansion
module for the sensor and actuator test. The controller
lists the actuators and sensors of the selected expan-
sion module. If you confirm the selection of an actuator
with OK, the controller activates the relay. The actuator's
function can now be checked. Only the activated actuator
is active, all other actuators are "deactivated" at this time.
For example, you can move a mixer valve in the "Open" dir-
ection and check that it is connected the right way round or
activate a pump and check that it starts up. If you select a
sensor, the controller shows the measured value of the se-
lected sensor. For the selected component, read the meas-
ured values from the sensors and check whether the indi-
vidual sensors are providing the expected values (temperat-
ure, pressure, flow rate, etc.).
8.17 Activating the screed-drying function
Note
All heat pumps except for the hybrid heat pump
are used for screed drying.
Menu → Installer level → Screed-drying function → HEAT-
ING1
– You can use this function to "dry heat" freshly laid screed
in accordance with the construction regulations, accord-
ing to a defined time and temperature plan.
When screed drying is activated, all the selected operating
modes are interrupted. The controller controls the flow tem-
perature of the controlled heating circuit according to a pre-
set program, regardless of the outside temperature.
Days after starting the func-
tion
Target flow temperature for
this day [°C]
1 25
2 30
3 35
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).
8.18 Changing the code for Installer level
Menu → Installer level → Change code
– You can use this function to change the access code for
the Installer 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.
Resetting to factory setting (→ Page 12)
9 Fault messages and faults
9.1 Fault message
If a fault occurs in the heating installation, will appear in
the display together with a fault message.
You can also read all current fault messages under the fol-
lowing menu point:
Menu → Installer level → System configuration → [System
----] → Fault status
– If a fault is present, the status Fault list is displayed.
In this case, the right-hand selection button is for the
Display function. You can press the right-hand selection
button to display the list of fault messages.
Note
Not all fault messages in the list will appear auto-
matically on the basic display.
Troubleshooting faults (→ Appendix D.1)
Troubleshooting errors (→ Appendix D.2)
10 Spare parts
10.1 Procuring spare parts
The original components of the product were also certified
by the manufacturer as part of the declaration of conformity.
If you use other, non-certified or unauthorised parts during
maintenance or repair work, this may void the conformity of
the product and it will therefore no longer comply with the
applicable standards.
We strongly recommend that you use original spare parts
from the manufacturer as this guarantees fault-free and safe
operation of the product. To receive information about the
available original spare parts, contact the contact address
provided on the reverse of these instructions.
▶ If you require spare parts for maintenance or repair
work, use only the spare parts that are permitted for the
product.
… 24 …


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