Generally pull it off and slide the new ones on. some makes/models may have retaining clips to hold them on, some just dont come off without removing the entire control.
dealer
That will depend on the type of patio heater.
to gain access to the heater control board pull the control knobs off the heater facia undo screws and remove facia the contact board and contact sliders can then be removed and replaced as nessary
The heater and AC knobs on a 1971 250c Mercedes work by turning in a clockwise or counterclockwise manner.
Not if you do not repalce it.Not if you do not repalce it.
The heater knobs in the Saturn Ion should just pull off if they are the round type. If they are the sliders, the face plate has to be removed before the knobs can be removed because they are attached inside by screws.
It does not have a heater control valve.It does not have a heater control valve.
Hi: it is atached to the control knobs, in other words the module is right behind the knobs.
Go here. You will find a detailed procedure on how to repalce the bulbs including photos. http://www.scoobymods.com/forums/showthread.phps=7493498e776e1599404fd3641ac44077&threadid=91 If the link does not work, search the archives at the "scoobymods" site.
A hammer.
Where is the the heater control valve??
I just went to the dealer yesterday to ask about how to replace the burnt out bulb in the control knobs. The control knobs do not have a specific fuse. The fuse that would cover the lights behind the knobs also covers all the instrument lights. You probably have a burnt out bulb. The dealer told me to remove the two screws that are under the panel where the heated seat adjustments are. That small panel is suppose to come off. Then you should be able to remove the cowel around the heater knobs. There is only one bulb and that is suppose to be behind the blower switch. When you locate the bulb, it is in a terrible location. You can use an air line hose and push it over the bulb. That is enough pressure to pull the bulb out and to put it in. Then put the cowels and cover plates back. I plan to work on my beetle on Saturday. So I can offer more help after I fix mine. At this point my comments are only what the dealer told me. Hope this helps. Tom