On 07/03/2020 19:39, alan_m wrote:
On 07/03/2020 09:36, Jim Stewart wrote:
On 07/03/2020 09:32, Rod Speed wrote:


"Jim Stewart" wrote in message
...
On 07/03/2020 08:46, Rod Speed wrote:
Jim Stewart wrote
I take it car blower resistor packs are cooled by the airflow of
the fan they are controlling....?

Unlikely they use resistor packs anymore.

what is used then ? .....

A decent modern electronic control.
that is good because these resistors fail regularly...doing mine when
I get home on Monday.....until then I either freeze and can hear the
radio of I can't ....

It was/is usually the thermal fuse that failed in the resistor packs. If
the fuse blew the lower 3 speed settings would not work but the fastest
always did because the resistor pack was no longer in circuit with the
blower motor being directly across 12V.

indeed