where is that jay?The fan speed only works at one speed? Sounds electrical. Might be the heater resistor Johnnyboy.
nice one jay,and great tutorial lad.The resistor is bolted into the housing behind your glovebox. There's a plug with two screws either side. It'll be a block of white ceramic material. If it's broken up that might be your problem.
Merged this thread with previous ones to add some background to proceedings.
The aircon system generally requires regas every two to three years to maintain it's ice-cold effect.
The actual heater system is seperate from this issue. Lack of heat (cold/lukewarm air at best) could be heater matrix related.
Do you hear the heater flaps moving behind the dashboard when the controls are operated?
This would be the first case I've heard of a control panel going faulty so that's why I'm asking questions.