Troubleshooting; Maintenance - Vaillant VAI 6-025 WN Manual De Usuario

9

Troubleshooting

The table below describes a selection of problems with their
possible causes and solutions, see Table 9.1.
If these solutions do not solve the problem contact your
usual installer or call your nearest Vaillant technical office.
SYMPTOMS
The system does not restart immediately
The system does not work at all (the
ventilation does not start)
Insufficient cooling or heating
Noise is heard
Smells are generated
Mist or steam come are blown out from the
unit
Table 9.1 Troubleshooting.
VAI6-WN-U_EN - 06/14 - Vaillant
POSSIBLE CAUSES
When unit is stopped, it won't restart until 3
minutes have elapsed to protect the system
When the power is disconnected and
reconnected again, the protection circuit will
work for three minutes to protect the air to
air heat pump unit
The power lead is not connected correctly
Power supply cut
The fuse has blown
Doors and/or windows open
Heat source nearby (e.g. lots of people in
the room)
The thermostat is set to an excessively high
temperature in cooling mode or excessively
low temperature in heating mode
Obstacle in front of the air inlet or outlet
The ambient temperature has not reached
the designated level
Dirty or blocked air filter
Is there any direct sunlight through the
window during the cooling operation?
During unit operation or when stopping the
unit a gurgling noise may be heard. This
noise is more audible the first 2-3 minutes
of operation
A cracking noise is heard during operation
If the noise is loud and comes from the
louvers during the unit operation, the air
filters may be too dirty
This is because the system circulates
smells from the indoor surrounding
(furniture, cigarettes)
During COOL mode or DRY mode
operation, the indoor unit may blow some
mist. This is due to the sudden cooling of
the indoor air.

MAINTENANCE

POSSIBLE SOLUTION
Wait 3 minutes before starting the unit
again
Wait 3 minutes after inserting the plug and
before starting the unit again
Connect the power lead correctly
Reconnect the power supply
Replace the fuse. Only use the right fuses
for each model. Do not use wire or other
material to replace the fuse. Fires could be
caused
Close the doors and/or windows
If possible, remove the heat source
Set the temperature properly
Remove the obstacle to allow the air to
circulate properly
Wait for a few moments
Clean the air filter (the air filter should be
cleaned every 15 days)
Use a curtain to protect the Air to Air heat
pumps unit
This is normal in an Air to Air heat pumps
unit. The noise is caused by the refrigerant
flowing in the system).
This is normal in an Air to Air heat
pumps unit. The noise is caused by the
casing expanding or shrinking due to the
temperature changes
Clean the air filters properly
This situation does not require any action
This situation does not require any action
EN
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