Checking Fault Codes; Querying The Fault Memory; Resetting The Fault Memory; Restarting The Installation Assistant - Vaillant flexoTHERM exclusive VWF 57/4 Installation And Maintenance Instructions Manual

11.2

Checking fault codes

The display shows a fault code F.xxx. A plain text display
explains the displayed fault code.
Fault codes have priority over all other displays.
Fault codes (→ Page 43)
If multiple faults occur at the same time, the display shows
the corresponding fault codes for two seconds each in se-
quence.
▶
Rectify the fault.
▶
To restart the product, press
tions).
11.3

Querying the fault memory

Menu → Installer level Fault list
The product has a fault memory. You can use this to query
the last ten faults that occurred in chronological order.
If a DCF sensor is connected, the date on which the fault
occurred will also be displayed.
Display views
–
The number of faults that have occurred
–
The fault currently selected with fault number F.xxx
11.4

Resetting the fault memory

1.
Press (Delete).
2. Confirm that you wish to clear the fault memory by
pressing (Ok).
11.5

Restarting the installation assistant

You can restart the installation assistant any time by calling it
up manually in the menu.
Menu → Installer level → Start inst. assistant
11.6

Using check programmes

Menu → Installer level → Test menu → Check pro-
grammes
You can use this function to start check programmes.
Note
If a fault has occurred, the check programmes are
not run.
You can terminate the check programmes by pressing
(Cancel) at any time.
11.7

Carrying out the actuator test

Menu → Installer level → Test menu → Sensor/actuator
test
You can check that the components of the heating installa-
tion are functioning correctly using the sensor/actuator test.
You can actuate more than one actuator at a time.
If you do not select anything to change, you can have the
current control values for the actuators and the sensor val-
ues displayed.
You can find a list of the sensor characteristics in the ap-
pendix.
0020213395_00 flexoTHERM exclusive Installation and maintenance instructions
reset (→ Operating instruc-
Inspection and maintenance 12
Characteristic values for the VR 10 external temperature
sensor (→ Page 48)
Characteristic values for internal temperature sensors
(→ Page 49)
Characteristic values for the VRC DCF outdoor temperature
sensor (→ Page 50)
11.8

Auxiliary electric heater circuit breaker

A circuit breaker is used to secure the internal auxiliary elec-
tric heater against short circuits. If the circuit breaker has
been triggered, the auxiliary electric heater remains switched
off until the short circuit has been rectified and the circuit
breaker in the electronics box has been manually reset.
11.8.1 Resetting the circuit breaker in the auxiliary
electric heater
1. Check the supply line to the mains connection PCB.
2. Check that the mains connection PCB is working cor-
rectly.
3. Check the supply lines for the auxiliary electric heater.
4. Check that the auxiliary electric heater is working cor-
rectly.
5. Rectify the short circuit.
6. Reset the circuit breaker in the electronics box.

12 Inspection and maintenance

12.1

Inspection and maintenance information

12.1.1 Inspection
The inspection is intended to determine the actual condition
of a product and compare it with the target condition. This is
done by measuring, checking and observing.
12.1.2 Maintenance
Maintenance is required in order to eliminate any deviations
between the actual condition and the target condition. This is
normally done by cleaning, setting and, if necessary, repla-
cing individual components that are subject to wear.
12.2

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.
33