How to fix a non-functional heater in Audi 80?

My Audi 80's heater has stopped working and I'm not sure what the issue could be. Can someone give me some advice on how to troubleshoot and fix this problem?

First, check the fuse for the heater to see if it needs to be replaced. If that doesn't solve the issue, it's possible that the heater core has clogged or the thermostat is malfunctioning. I suggest bringing your car to a mechanic for further diagnosis and repair.

Have you checked the coolant levels in your car? Low coolant levels can lead to a non-functional heater. Also, inspect the heater control valve to see if it's stuck or clogged. If all else fails, consider bringing your Audi 80 to a specialist for heater repairs.

One potential cause for a non-functional heater could be a faulty blower motor. You can test this by turning on the heater and seeing if you can hear the blower motor running. If not, it may need to be replaced. Alternatively, it could also be an issue with the temperature control switch.