Fault rectification

Fault finding only by qualified electrician. Call on the services of a qualified electrician any time there is a fault. Repairs should only be carried out by a qualified electricians.

Switch off mains fuse, secure against being accidentally switched back on and position a warning sign.

Malfunction

Cause, measures

Fan does not switch on

No mains voltage.

Check whether the mains fuse has failed. Switch on if necessary.

Impeller is blocked.

Check that impeller is running smoothly. Clean impeller if necessary.