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 electrician.
Fault | Cause, measures |
Fan does not switch on. | No mains voltage. Check whether the mains fuse has failed. Switch on if necessary. |
Fan does not switch off. | Overrun time (max. 25 min.). Wait for overrun time and reduce if necessary. |
Motor’s thermal overload protection switches the fan off. | Motor too hot. Wait until the motor has cooled down. Cool-down time can be up to 10 minutes. Unit switches back on automatically after cooling down. |
Fan does not switch off or fan switches on when not wanted. | A high-impedance voltage is present at terminal L1 due to a glow lamp in the control switch, cables laid in parallel (induction) or transformers or other electrical components. Recommendation: Wire X2 capacitor (220 nF/ 250 V) to zero. |