Amazon: Heater Controls

[redcar]

what a bunch of anoraks we are...

[Alf ista]

Originally Posted by redcar

what a bunch of anoraks we are...

Ha ha!!! yes we are...

[Patrick60]

I just rebuilt my 122 heater, valve, case, cables, etc. But now, strangely, I can't get the heater control module back into its slot; doesn't seem to be enough room. It came out so easily I never gave it a thought. What's the secret? Will it help if I disconnect the cables at the control end?

[Derek UK]

Are you talking about how the plate fits into the back of the dash? 2 screws at the bottom into the lip of the dash and one at the top? From memory......

[Groundes-Peace]

From the description I sounds as if the heater controls are the same for the 1800S.
Last weekend was warm and travelling 50 miles with the heater on was not the best. I thought having moved the HEAT switch to the off position that the cabling was jammed or the thermo control was not working. However on investigation the next morning I found I had not pushed the control lever hard enough to the off position, and all was well for a pleasant second day in my 1964 built car. Apart from new hoses my system appears original.

[Faust]

Originally Posted by Patrick60

I just rebuilt my 122 heater, valve, case, cables, etc. But now, strangely, I can't get the heater control module back into its slot; doesn't seem to be enough room. It came out so easily I never gave it a thought. What's the secret? Will it help if I disconnect the cables at the control end?

I feel your pain... recently re-fitted my heater control panel and it was a right pain to do.

You can either:

Fit with no cables attached - this makes it a LOT easier to locate (then you have the fun task for hooking up the 3 relevant cables... not very easy if you have big hands)

Or,

Fit the unit with cables attached and be prepared for a lot of frustration and swearing. I did it this way, and it's 95% good. Slight gap on one side so I'll have another go at some point.

You may find it easier to remove the drivers or passenger seat as this gives you a bit more room to stick your head under the dash to see what's going on...

Good luck.

Oh, and my unit had 2 screws in the bottom, none it the top or anywhere else (car is a 1970 133).

[Derek UK]

Oh, and my unit had 2 screws in the bottom, none it the top or anywhere else (car is a 1970 133).

Must have a fixing of some sort at the top or the control panel will flex when you move the usually the rather stiff control levers. Top screw through the dash under the recessed lip. Although Volvo changed the black knobs for the levers for safety reasons I don't think they changed much else but maybe wrong about that. The B18 and B20 cars part number for the control is different.

[Faust]

Originally Posted by Derek UK

Oh, and my unit had 2 screws in the bottom, none it the top or anywhere else (car is a 1970 133).

Must have a fixing of some sort at the top or the control panel will flex when you move the usually the rather stiff control levers. Top screw through the dash under the recessed lip. Although Volvo changed the black knobs for the levers for safety reasons I don't think they changed much else but maybe wrong about that. The B18 and B20 cars part number for the control is different.

Had a good look at it and couldn't see a screw hole... I've got a spare unit and that doesn't appear to have a hole either, and there is no hole in the dash matching the location...

Funnily enough, I did consider drilling one to hold the unit more securely but never got round to it. I assumed that the 2 bottoms screws, plus the tension of the cables themselves would be enough to hold the unit in place.

(I'll have another look at the dash when I get home in case I'm wrong... god knows, it's happened before!)

My cars is very late Amazon and does appear to have a few 'quirks' that others don't have though...

[Faust]

Well, I'll be a Monkey's uncle... there was a hole for the top mounting screw.

Hiding behind a layer of paint with a piece of tape behind it ('inside' the dash).