Vaillant geoTHERM VWS Series, Installation Instructions Manual

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Installation instructions geoTHERM VWS/VWW 0020057444_01
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9 Inspection and maintenance
9.1 General notes
In contrast to heaters based on fossil fuels, no expen-
sive maintenance work is necessary for the Vaillant
geoTHERM heat pump. However an annual inspection
of the system by a specialist is a prerequisite for contin-
uing operational safety, reliability and a long working
life.
d
Danger!
Inspection and repairs may be carried
out only by an approved heating installa-
tion company.
Inspections / Maintenance work not car-
ried out can result in damage to proper-
ty and personal injury.
e
Danger!
Risk of fatal electric shock from touch-
ing live connections! Before commencing
work on the heat pump, disconnect the
power supply (circuit breaker) and se-
cure it against being switched on again
inadvertently.
Only genuine Vaillant replacement parts may be used
for maintenance work, to ensure the long-term working
order of all functions of your Vaillant appliance and to
prevent changes to the approved production standard.
Any spare parts which might be required are listed in
the relevant current spare parts catalogues.
Information can be obtained from Vaillant Customer
Service Centres.
9.2 Inspection work to be performed
The heat pump is engineered in such a way that only a
few inspection tasks need to be carried out:
VWS:
– Manually actuate the safety assemblies in the brine
and heating circuits at regular intervals.
– Check the dirt filter in the brine circuit regularly.
– Check the pressures in the brine and heating circuits
regularly.
VWW:
– Manually actuate the safety assemblies in the heating
circuit at regular intervals.
– Check the dirt filter in the water circuit regularly.
– Check the pressure in the heating circuit regularly.
9.3 Servicing and repairs
The Vaillant geoTHERM heat pump requires no servicing
work.
To carry out repairs to defective parts on the inside of
the heat pump:
• Remove the heat pump cladding sections in the re-
verse order to that described in Chap. 6.4.
9.4 Test operation and restarting
d
Danger!
Risk of injury!
The heat pump may only be put into op-
eration again after all the cladding sec-
tions have been fitted.
• Fit all the heat pump cladding sections as described in
Chap. 6.4.
• Start up the heat pump.
• Check the heat pump for correct functioning.
10 Troubleshooting and diagnostics
d
Danger!
Troubleshooting and diagnostics meas-
ures may only be carried out by a recog-
nised expert technician company.
e
Danger!
Risk of fatal electric shock from touch-
ing live connections! Before commencing
work on the heat pump, disconnect the
power supply (circuit breaker) and se-
cure it against being switched on again
inadvertently.
10.1 Error messages on the controller
Error messages appear on the display approximately
20 seconds after the error has occurred and are written
to the controller's error memory if the error is present
for approximately 3 minutes. You can call up the error
memory in Menu I1. As long as the fault is present, you
can call up the fault display by turning the left hand dial
1 x to the left, starting from the graphics display.
Error History
I1
Fault number >1
Fault code 41
16.02.08 07:18
Error CH circuit
Heat source inlet sensor T3
Fig. 10.1 Error message in error memory, Menu I1
The geoTHERM control system recognises three differ-
ent types of malfunction:
– Malfunction of
components that are connected via
the eBUS .
9 Inspection and maintenance
10 Troubleshooting and diagnostics