Air con only blows cold air
Yesterday the air con on my 159 started behaving strangely. I am familiar with how it's supposed to work in that when starting from cold it won't blow hard until the engine has warmed up and then it gives a blast to clear the screen before settling down.
It is still going through this routine but it is only blowing cold air. In fact because the air being blown is cold and the inside does not warm up it keeps on at full throttle because it clearly thinks it needs to blast out even more of what it thinks is warm air.
Has anyone seen this before and if so, know of a fix?
I have tried playing around with auto, full auto and so on but can't get any warm air come out.