87 Audi 5000 heater/airconditioner problem

My 87 Audi 5000 heater/airconditioner suddenly only works in the lowest temparature position.

When pushing the temperature control buttons on the dashboard, there is no response. The screen only shows: the letters "low"

My question:

Could this be the control unit (with the buttons on the dashboard)?

Or.

a thermostat, bad connection, etc. ?

Any ideas?

Reply to
Marti
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Sure you are not talking about a '97 rather than '87 ?

The '87 didn't have an alpha display, just LED indicators by the buttons.

Audi climate c> My 87 Audi 5000 heater/airconditioner suddenly only works in the

Reply to
Tony

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