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www.ventilation-system.com
LAMP REPLACEMENT
DiSCONNECT THE UNiT FROM POWER SUPPLY BEFORE
ANY MAiNTENANCE OPERATiONS!
1. Remove the decorative grille:
• Pull the grille to release the springs from the holders on the casing.
• Take out the lamp power socket from the respective socket on the casing.
• Take out the power socket of the sensors from the respective sockets on the control unit (applicable for TH and TP models).
2. Take off the surface-mounted luminaire.
Press the holders on the reverse side of the grille frame and take off the surface-mounted luminaire.
Hooks of the luminaire
Lamps
Surface-mounted luminaire
3. Replace the lamps.
4. Reassemble the unit in the reverse order.
TROUBLESHOOTiNg
TROUBLE
POSSiBLE REASONS
TROUBLESHOOTiNg
The fan does not get started.
No power supply.
Check the electric connections and the operation status of the
circuit breaker.
Motor jam.
Turn the fan off. Troubleshoot clogging of the impeller. Restart
the fan.
Automatic circuit breaker tripping
during the unit turning on.
Over current as a result of short circuit
in the electric circuit leads to tripping of
the circuit breaker.
Disconnect the fan from power supply and contact the product
Seller. Do not turn the fan on again!
Low air flow.
Air ducts or other components of the
ventilation system are clogged. The
impeller is clogged. The air ducts are
damaged. The air dampers are closed.
Clean the air ducts, the impeller and other components of
the ventilation system. Make sure that the air ducts are not
damaged. Make sure that the air dampers and louvre shutters
are open.
