Vaillant 0020135785, Installation Instructions Manual

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en
USER INFORMATION
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0020140122_03 - 12/19 - Vaillant
6 User information
At the end of the installation, the installer must:
– explain the operation of the appliance and its safety devices
to the user, if necessary provide a demonstration and answer
any questions;
– give the user all the required documentation,
– fill in the documents where necessary;
– advise the user of the precautions necessary to prevent dam-
age to the system, appliance and the building;
– remind the user to service the appliance annually.
7 Maintenance
7.1 Trouble-shooting
7.1.1 Fault diagnosis
The following checks should be performed before proceeding
onto specific diagnostics:
– Ensure that the control centre has not been disconnected from
the electricity supply and that it is connected correctly.
– Ensure that all installation’s appliances are available.
– Check the functioning of external regulatory devices (room
thermostat(s).
i
The rectification of faults described in this chapter
should be carried out by a qualified engineer and if
needed by the After Sales Service.
230V~ CYL.
2 1
DHW
CH1
CH2
ON DHW OFF
1 2 - +
BUS NTC
2
1
3
Key
1 Fuse
2 Green LED, power supply
3 Red LED flashes, fault
Fault Possible cause Solution
Green LED perma -
nently off
No 230 V power sup-
ply or the fuse in the
appliance is faulty
Check that the main
voltage cable is con-
nected correctly. Check
the domestic fuse for
the 230 V supply and
re-connect the power
supply. Replace the
main supply fuse in the
control centre (see
technical data).
Red LED flashes
quickly (2 Hz,
2 flashes/second)
Short circuit of the
connected tempera-
ture sensor (NTC) in
the cylinder
Check the cable of the
temperature sensor
(NTC) for damage.
Replace the tempera-
ture sensor (NTC) in the
cylinder.
Red LED flashes
slowly (0,5 Hz,
1 flash/ 2 seconds)
Communications
error with the eBUS
boiler.
Check that the boiler’s
eBUS cable is con -
nected correctly and
not damaged. Check
that the boiler is
turned on.
Heating zone valves
not operating
Valve disconnected.
Valve doesn’t open.
Check the room
thermostat(s) compati-
bility and connections.
Check the valve con-
nections. Check the
room thermostat(s)
pairing. Ensure that
there is no interruption
to the electricity supply
and that the control
centre is properly con-
nected and turned on.
DHW valve not oper-
ating
Fault domestic hot
water cylinder
Cylinder dual ther-
mostat discon-
nected. The tempera-
ture sensor is defec-
tive or disconnected.
Check the cylinder dual
thermostat and tem-
perature connections.
Check the sensor’s
resistance. Ensure that
there is no interruption
to the electricity supply
and that the control
centre is properly con-
nected and turned on.
7.2 Main supply cable
e
Danger!
>
The main supply cable must be replaced by a
qualified and competent electrician.
>
If the main supply cable is damaged, replace it refering to the
chapter “Electrical connection”.