Switching On The Product; Handing Over To The End User; Instructing The End User; Troubleshooting - Vaillant aroTHERM VWL 35/5 AS 230V S2 Operating Instructions Manual

▶
Ensure that the cover for the electrical connections is
installed.
7.2

Switching on the product

▶
Switch on all of the disconnectors to which the product is
connected in the building.
8

Handing over to the end user

8.1

Instructing the end user

▶
Explain to the end user how the product operates.
▶
Point out, in particular, the safety warnings to the end
user.
▶
Make the end user aware of the need for regular main-
tenance.
9

Troubleshooting

9.1

Fault messages

In the event of a fault, a fault code is shown on the display of
the indoor unit's control.
▶
Use the "Fault messages" table (→ installation instruc-
tions for the indoor unit, Appendix).
9.2

Other faults

▶
Use the "Troubleshooting" table (→ installation instruc-
tions for the indoor unit, Appendix).

10 Inspection and maintenance

10.1

Observing the work plan and intervals

▶
Comply with the specified intervals. Carry out all of the
work that is mentioned ( Appendix D).
10.2

Procuring spare parts

The original components of the unit were also certified as
part of the CE declaration of conformity. You can find inform-
ation about available Vaillant original spare parts by contact-
ing the contact address provided on the back page of these
instructions.
▶
If you require spare parts for maintenance or repair work,
use only Vaillant original spare parts.
10.3

Preparing for inspection and maintenance

▶
Observe the basic safety rules before carrying out in-
spection and maintenance work or installing spare parts.
▶
When working in an raised position, observe the occupa-
tional safety rules (→ Section 4.9).
▶
Switch off all of the disconnectors to which the product is
connected in the building.
▶
Disconnect the product from the power supply but ensure
that the product is still earthed.
▶
When working on the product, protect all electric com-
ponents from spraying water.
68
10.4

Carrying out maintenance work

10.4.1 Cleaning the product
▶
Only clean the product when all of the casing sections
and covers have been installed.
▶
Do not clean the product with a high-pressure cleaner or
a direct jet of water.
▶
Clean the product using a sponge and hot water with
cleaning agent.
▶
Do not use abrasive cleaners. Do not use solvents. Do
not use any cleaning agents that contain chlorine or am-
monia.
10.4.2 Removing the covers and casing sections
1. Remove the cover for the hydraulic connections.
(→ Section 5.5)
2. Remove the cover for the electrical connections.
(→ Section 6.4)
3. Remove the casing sections to the extent required for
the subsequent maintenance work (→ Section 4.13.1).
10.4.3 Cleaning the evaporator
1. Clean the gaps between the evaporator fins using a
soft brush. In doing so, avoid fins being bent.
2. Remove any dirt and depositions.
3. If required, straighten out any bent fins using a fin
comb.
10.4.4 Checking the fan
1. Turn the fan by hand.
2. Check that the fan runs freely.
10.4.5 Cleaning the condensate discharge
1. Remove the dirt that has accumulated on the condens-
ate tray or in the condensate discharge pipe.
2. Check that the water can drain freely. Poor approx. 1 l
water into the condensate tray.
Installation and maintenance instructions 0020257297_07