Digital Heater query

[Greenmachine96]

Hi
2.5D R reg Bongo here.
No heat from heater, fans blowing, all linkages seem to move.
Engine temp on dashboard normally sits at 11 or 12oclock,no problems there. No recent coolant change.

Any ideas? I don't really understand what the digital controls do when changing temperature. Is there a hot cold mix happening somewhere?

Thanks

[g8dhe]

Yes there is a an air mixing box down central behind the dashboard, the fan under the bonnet blows the air thru the cooling matrix and into the box where there is a heater from the engine coolant. If the controls are working and the various control rods on both sides of the box are working, especially passenger side which controls the air flow over the heater (difficult to see hidden up high it adjusts a flap inside to put the air past the engine coolant radiator inside). Its not unknown for the heater matrix to get blocked and needs removing and cleaning or replacing. see these diagrams;
http://lushprojects.com/bongopartsmk2/c ... mgno=.html Mixing box
http://lushprojects.com/bongopartsmk2/c ... mgno=.html Fan under bonnet