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OPERATION FAILURES / ALARMS
SYMTOM
1
Outdoor air cool when
entering the house.
2
The unit is deaf, the fans do not
rotate, and none of the indicator
lamps of the control panel is lit.
Service und Information
D
HELIOS Ventilatoren GmbH & Co · Lupfenstraße 8 · 78056 VS-Schwenningen
CH HELIOS Ventilatoren AG · Steinackerstraße 36 · 8902 Urdorf/Zürich
A
HELIOS Ventilatoren · Postfach 854 · Siemensstraße 15 · 6023 Innsbruck
CAUSE
• Air cools down in the attic ducts.
• The heat recovery cell has frozen, and extract air
cannot heat outdoor air.
• The extract air filter or the cell is clogged.
• The door switch may be broken or has not
closed properly.
• The socket is dead; the fuse may have
burned out, for instance.
METHODE/DO THIS
• Check the insulation of the attic ducts.
• Check the cleanliness of the filters and the heat recovery cell.
• Check the door switch and the fuses. The unit has a glass tube fuse,
T800mA.
• If needed, contact a service representative (in order to check the glass
tube fuse, for instance).
F
HELIOS Ventilateurs · Le Carré des Aviateurs · 157 av. Charles Floquet · 93155 Le Blanc Mesnil Cedex
GB HELIOS Ventilation Systems Ltd. · 5 Crown Gate · Wyncolls Road · Severalls Industrial Park ·
Colchester · Essex · CO4 9HZ
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