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climate recirculation switch

Help, Advice, Owners' Discussion and DIY Tutorials on all Volvo's "mid era" rear wheel drive Volvos.

1975 - 1993 240
1983 - 1992 740
1982 - 1991 760
1986 - 1991 780
1990 - 1998 940
1990 - 1998 960
1997 - 1998 V90/S90

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ehofmeister
Posts: 1
Joined: 9 June 2011
Year and Model: 240 dl wagon
Location: usa

climate recirculation switch

Post by ehofmeister »

Hi, on a 1993, 240 DL wagon this winter I have a lot of moisture in the car. For example, drive to work on a cold day, park all day and I come out and there is a lot of moisture condensed on the interior of the windows. I try to keep the mats dry, run the defrost all the time and still there is a lot of moisture. I'm wondering if the recirculation is stuck on so it's trapping all the moisture inside the car. Is there a way to trouble shoot this?
thanks e

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billofdurham
MVS Moderator
Posts: 6507
Joined: 2 February 2006
Year and Model: 855, 1995
Location: Durham, England
Been thanked: 5 times

Post by billofdurham »

Welcome to Matthew's Volvo Site.

Unfortunately there is no easy way to diagnose the manual heating system used in the 240. However, one problem that has arisen which can cause excess moisture in the car is a blocked, or partially blocked, heater unit drainage hose. Attached is a Volvo Service Bulletin addressing this.
240 heater unit drain hose.pdf
(586.73 KiB) Downloaded 136 times
Bill.
Work was good - retirement is better.

1996 850GLT 2.5 20v Estate Manual.
1995 Peugeot Boxer 2.5Tdi Autosleeper.
Previously:
1984 244DL, Manual, Beige.
1987 744GLE, Manual, Green.
1991 960 3.0 24v, Auto, Silver.
1994 940T Wentworth, Auto, Blue.

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