Heater: 850: - My heater won't shut off fully.

scimitar · Oct 7th, 2009, 08:10

Can anyone offer advice on how to shut off the warm air coming into the cabin when both the heater knobs are closed please? The flow of warm air is only small but irritating on days when the heater is not wanted.

cowboy · Oct 7th, 2009, 08:42

Don't know the answer but have got the same prob on my V70.

dooby · Oct 7th, 2009, 10:55

Have you got the Electronic Climate Control, where you move a dial and motors do the work? If so is it possible one of the motors is no longer responding to input from the dial?

If you've got the manual linkage system where you can feel that moving the dial is moving the flap then I don't know I'm afraid.

Cheers, Pete

scimitar · Oct 7th, 2009, 16:30

My apologies; should have said that it is the manualy controlled system and although there does not appear to be any free play in the controls; there is still some warm air coming from the heater. Do the temperature controls operate water shut off valves or an air flap. If it is the latter how do I remove the heater control front plate and is there any way to improve things please.

ovlov25 · Oct 7th, 2009, 17:59

I just turn the temp down a little and direct it to the windscreen. You'd never notice it.

FCPGroton · Oct 7th, 2009, 18:36

Are you closing the vent with the slider knob next to the vent? If so, the foam around the vent door could be gone, which would allow a little bit of ait out around them.

thealchemyst · Oct 8th, 2009, 02:36

just turn them temp down, if you turn fully down it will just send cold air from outside into the car.
this is just a guess but if you ajust the air mix dial you will probably be able to get recirculating ie; no fresh air into the mix, and therefor in effect shut of the flow from outside, not tried this but its worth a fiddle.

scimitar · Oct 8th, 2009, 08:52

The problem is that when the temperature controls (Knobs) are turned fully anti-clockwise there is still a small amount of warm air coming into the footwells. This is nice on a cold day but not on a warm one. Just wondering if hot water all ways flows through the heater and the amount of air that it warms is controlled by a manual flap, or is the temperature of the air coming into the car controlled by a water valve?

Oct 7th, 2009, 08:10	#1
scimitar Scimitar Last Online: Aug 20th, 2017 13:45 Join Date: Dec 2003 Location: Solihull	My heater won't shut off fully. Can anyone offer advice on how to shut off the warm air coming into the cabin when both the heater knobs are closed please? The flow of warm air is only small but irritating on days when the heater is not wanted.

Oct 7th, 2009, 10:55	#3
dooby Forum Support Team Last Online: Jul 5th, 2019 16:11 Join Date: Mar 2006 Location: Cambridge View Photos By: dooby	Have you got the Electronic Climate Control, where you move a dial and motors do the work? If so is it possible one of the motors is no longer responding to input from the dial? If you've got the manual linkage system where you can feel that moving the dial is moving the flap then I don't know I'm afraid. Cheers, Pete __________________ '97MY black 855R M56H + Quaife Porsche/S60R BBK + XP8s, TD04HL-19T, 17"x8J Pegasus, THS intercooler, custom intake & RIP, Samco coolant, Koni/Nivo H&R, S60R manifold, TT-USB, Simota, IPD turbo back, IPD anti-roll bars & droplinks, IPD HT, MSD coil, Innovate LC-1, dimming mirror, Goodridge hoses, DOT5.1, V70 rear lights & handles, poly top bush & A arms & tie bar, strut brace, clear repeaters, 6k HID, catch tank, 2x rear brace

Oct 7th, 2009, 16:30	#4
scimitar Scimitar Last Online: Aug 20th, 2017 13:45 Join Date: Dec 2003 Location: Solihull	Heater not shutting off fully. My apologies; should have said that it is the manualy controlled system and although there does not appear to be any free play in the controls; there is still some warm air coming from the heater. Do the temperature controls operate water shut off valves or an air flap. If it is the latter how do I remove the heater control front plate and is there any way to improve things please.

Oct 7th, 2009, 17:59	#5
ovlov25 Premier Member Last Online: Aug 1st, 2022 23:02 Join Date: Nov 2007 Location: Antrim	I just turn the temp down a little and direct it to the windscreen. You'd never notice it. __________________ I want I want I want!!!

Oct 7th, 2009, 18:36	#6
FCPGroton Trader Last Online: Nov 29th, 2015 20:12 Join Date: Jun 2009 Location: Old Saybrook, CT	Are you closing the vent with the slider knob next to the vent? If so, the foam around the vent door could be gone, which would allow a little bit of ait out around them. __________________ FCP Euro Andrew Owendoff Communications Facilitator +1.877.634.0063 Get 10% off your order, use coupon code VOLVOFORUMUK : FCP Euro Official Car Parts Website <- Click

Oct 7th, 2009, 08:42	#2
cowboy Junior Member Last Online: Dec 8th, 2009 08:17 Join Date: Feb 2007 Location: farnham	Don't know the answer but have got the same prob on my V70.

Oct 8th, 2009, 02:36	#7
thealchemyst Master Member Last Online: Aug 22nd, 2018 20:57 Join Date: Apr 2009 Location: Coalville/Leicestershire	just turn them temp down, if you turn fully down it will just send cold air from outside into the car. this is just a guess but if you ajust the air mix dial you will probably be able to get recirculating ie; no fresh air into the mix, and therefor in effect shut of the flow from outside, not tried this but its worth a fiddle. __________________ 1995 850 t5 glt estate purple,FK-40mm,stainless exhaust polybushed,wilwood4pot+s60r discs,mbc,019 battery,18" c30 alloys,michelin pilots,silicone hoses,braided brake lines,HID's,ipd track swaybars 25+mpg :0) @Prescott Hillclimb

Oct 8th, 2009, 08:52	#8
scimitar Scimitar Last Online: Aug 20th, 2017 13:45 Join Date: Dec 2003 Location: Solihull	My heater will not shut off. The problem is that when the temperature controls (Knobs) are turned fully anti-clockwise there is still a small amount of warm air coming into the footwells. This is nice on a cold day but not on a warm one. Just wondering if hot water all ways flows through the heater and the amount of air that it warms is controlled by a manual flap, or is the temperature of the air coming into the car controlled by a water valve?

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