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Old 06-23-2005, 01:01   #1 (permalink)
Hy CSK
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V70 - A/C fan

I noticed that when parked, the airco fan sometimes switches on
for long periods. Outside temperature was over 95F.
I've been amazed to feel that it blows quite fresh air, even 20
minutes after the engine -and the compressor I guess- was shut off.
Is this normal?
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Old 06-23-2005, 06:01   #2 (permalink)
Stephen Henning
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Re: V70 - A/C fan

Hy CSK <on5wv@RadioLink.net> wrote:

> I noticed that when parked, the airco fan sometimes switches on
> for long periods. Outside temperature was over 95F.
> I've been amazed to feel that it blows quite fresh air, even 20
> minutes after the engine -and the compressor I guess- was shut off.
> Is this normal?


It is part of a system they have to keep smells from forming in the AC
system due to moisture and fungus forming. Letting the fan blow dries
out the AC system.
--
Cheers, Steve Henning in Reading, PA, USA
Owned '67,'68,'71,'74,'79,'81,'87,'93,'95 & '01 Volvos.
The '67,'74,'79,'87,'95 and '01 through European Delivery.
http://home.earthlink.net/~rhodyman/volvo.html
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Old 06-23-2005, 06:01   #3 (permalink)
Mike F
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Re: V70 - A/C fan

Hy CSK wrote:
>
> I noticed that when parked, the airco fan sometimes switches on
> for long periods. Outside temperature was over 95F.
> I've been amazed to feel that it blows quite fresh air, even 20
> minutes after the engine -and the compressor I guess- was shut off.
> Is this normal?


If you're talking about the fan inside the car, then that's normal.
It's to dry the condensation caused by using the A/C, which inhibits
mould formation (smell) and corrosion (expensive part replacement).

--
Mike F.
Thornhill (near Toronto), Ont.

Replace tt with t (twice!) and remove parentheses to email me directly.
(But I check the newsgroup more often than this email address.)
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Old 07-02-2005, 14:02   #4 (permalink)
Graham Brownlee
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Re: V70 - A/C fan

I believe that this facility was removed on later models with internal
movement sensors, because it set off the alarm. It is now a good idea to
turn off the air con a few minutes before stopping to allow the evaporator
to dry off, which achieves the same object.

"Mike F" <"mikef2316()"@allsttream.nett> wrote in message
news:42BAA764.B0866315@allsttream.nett...
> Hy CSK wrote:
>>
>> I noticed that when parked, the airco fan sometimes switches on
>> for long periods. Outside temperature was over 95F.
>> I've been amazed to feel that it blows quite fresh air, even 20
>> minutes after the engine -and the compressor I guess- was shut off.
>> Is this normal?

>
> If you're talking about the fan inside the car, then that's normal.
> It's to dry the condensation caused by using the A/C, which inhibits
> mould formation (smell) and corrosion (expensive part replacement).
>
> --
> Mike F.
> Thornhill (near Toronto), Ont.
>
> Replace tt with t (twice!) and remove parentheses to email me directly.
> (But I check the newsgroup more often than this email address.)



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Old 07-03-2005, 11:02   #5 (permalink)
Stephen Henning
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Re: V70 - A/C fan

> "Mike F" <"mikef2316()"@allsttream.nett> wrote in message
> > If you're talking about the fan inside the car, then that's normal.
> > It's to dry the condensation caused by using the A/C, which inhibits
> > mould formation (smell) and corrosion (expensive part replacement).


"Graham Brownlee" <graham.brownlee2@ntlworld.com> wrote:
> I believe that this facility was removed on later models with internal
> movement sensors, because it set off the alarm. It is now a good idea to
> turn off the air con a few minutes before stopping to allow the evaporator
> to dry off, which achieves the same object.


It was still that way on my 2001 V70, the A/C fan comes on after we
leave the car. It gives the normal condensate time to run down the walls
into the drain. Then it kicks on the fan to dry it out.
--
Cheers, Steve Henning in Reading, PA, USA
Owned '67,'68,'71,'74,'79,'81,'87,'93,'95 & '01 Volvos.
The '67,'74,'79,'87,'95 and '01 through European Delivery.
http://home.earthlink.net/~rhodyman/volvo.html
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Old 07-04-2005, 09:02   #6 (permalink)
Mike F
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Re: V70 - A/C fan

Stephen Henning wrote:
>
> It was still that way on my 2001 V70, the A/C fan comes on after we
> leave the car. It gives the normal condensate time to run down the walls
> into the drain. Then it kicks on the fan to dry it out.
> --
> Cheers, Steve Henning in Reading, PA, USA
> Owned '67,'68,'71,'74,'79,'81,'87,'93,'95 & '01 Volvos.
> The '67,'74,'79,'87,'95 and '01 through European Delivery.
> http://home.earthlink.net/~rhodyman/volvo.html


And it sends a signal to the alarm as to what it's doing, so the alarm
doesn't come on.

--
Mike F.
Thornhill (near Toronto), Ont.

Replace tt with t (twice!) and remove parentheses to email me directly.
(But I check the newsgroup more often than this email address.)
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