Vaillant recoVAIR/3 SERIES, Руководство по эксплуатации и установке

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35 Installation Manual recoVAIR/3 0020062918_03
7 Troubleshooting
The faults listed below may only be rectified by an ex-
pert technician.
• Make sure the parts are correctly fitted and that their
original position and alignment are retained.
Malfunction Cause Remedy
The unit does not op-
erate Temporary interruption of the mains voltage sup-
ply or no supply at all. Power supply circuit break-
er tripped. Electricity disconnector was activated.
Fuse F1 in the unit is defective. After a mains failure the unit automatically restarts once the
mains voltage is re-established. Re-set circuit breaker in
mains distribution board. Check that all cables are properly
connected and undamaged. If necessary, replace the fuse F1
on the PCB.
Unit operation is very
loud even at the mini-
mum fan speed No silencers in the fresh air and exhaust air ducts.
Wrong silencers, or silencers are too short. Filters
are extremely soiled.
Ventilators are defective or heavily soiled. Mount additional silencers in accordance with the system de-
sign.
Reduce the air quantity to the minimum fan stage. Clean or
replace filters.
Replace or clean ventilators, check the reason of soiling.
None or insufficient
fresh air supply Filters are extremely soiled.
Fresh air valves/grilles closed too much.
Exhaust air or fresh air ducts obstructed.
Fresh air input louvre too small.
Incorrect wiring.
Fan defective. Clean the filter.
Open the fresh air valves/grilles. Adjust the system again.
Clean the exhaust air and fresh air ducts.
Fit a larger louvre.
Check the wiring.
Replace the fan if necessary.
No or insufficient
exhaust air flow
(i.e. in the bathroom
the mirror stays
fogged up) Filters are extremely soiled.
Exhaust air valves closed too much.
Exhaust air or fresh air ducts obstructed.
Fresh air input louvre too small.
Incorrect wiring.
Fan defective. Clean the filter.
Open the exhaust air valves. Adjust the system again.
Clean the exhaust air and fresh air ducts.
Fit a larger louvre.
Check the wiring.
Replace the fan if necessary.
Bypass summer mode
does not work Bypass function not activated or set days for
summer mode expired.
Incorrect positioning of the temperature sensor.
Flap position and/or motor for bypass defective.
Defective bypass motor wiring. In the programming level of the remote control, set or acti-
vate the bypass function.
Correctly position the temperature sensor.
Check the flap position and the motor and, if required, re-
place them.
Check that the plug to the flap motor is correctly positioned.
Check in the Service/Diagnostics menu whether the sensors
are detected at the remote control. See section 5.1.2
Noise in the conden-
sation water drain
trap Drain trap incorrectly connected. Connect the drain in accordance with section 4.5.3.
Water dripping from
the unit Exhaust air and fresh air ducts are not vapour-
sealed. Insulate exhaust air and fresh air ducts, make ducts air-tight
or use specially insulated pipes.
Fresh air too cold Exhaust air and fresh air flows not balanced.
Wrong flap position and bypass motor defective. Adjust the unit in accordance with section 5.2.
Check the flap and motor,
Clean the flap and bracket,
if necessary, replace the bypass.
No fresh air or ex-
haust air (only one
fan running) Frost protection activated.
With outside temperatures below -7 °C, correct
operation.
The frost protection sensor will not work at a dis-
charge air temperature above 3 °C. Check the resistance of the frost protection sensor based on
table 7.3.
If necessary, replace the frost protection sensor.
Odours from the
kitchen/WC enter into
other rooms Outlets for fresh air and exhaust air are too close
to each other. Extend the distance between the outlets for fresh air and ex-
haust air. We recommend to position these junctions in differ-
ent parts of the roof.
Sound transmitted be-
tween the rooms No crosstalk absorbers mounted. Additionally install crosstalk absorbers.
Adjust the unit in accordance with section 5.2.
Planned air flow not
reached at the start-
up System is not air-tight. Seal all pipe connections properly if necessary.
Noise in the unit after
replacing the fan. Wrong mounting of the fans. Check the correct positioning of the fans.
Table 7.1 Troubleshooting
• Troubleshooting is successful if the unit operates cor-
rectly.
• Only use genuine spare parts for repairs.
Troubleshooting 7