Astra Heater Fan Problem

The resistor pack responsible for the lower speeds has burnt out. It'll either be buried in the dash or stuck to the back of the fan motor - don't know about Astras.

The speed is controlled by a series of resistors. These have failed.

Sounds as though the heater motor resistior has gone open circuit. This is a common occurence, and is more than likely caused by the heater motor starting to sieze and draw too much current. The resistor and motor are both located under the black scuttle panel at the back of bonnet, behind the pollen filter.

HTH

Anthony Remove eight from email to reply.

Thanks everyone - replaced the resistor (£30) on the heater motor and its now working fine - its just a shame I wasted £24 on a new switch (if anyone needs one let me know - snipped-for-privacy@ntlworld.com).

Thanks again,

David.

You could have spent a fraction of the 24 quid on a simple DVM - that would have showed it wasn't the switch.