What do you do if your rover 414 has cold air blowing out of the heater?

If your Rover 414 is blowing cold air from the heater, first check the coolant level in the reservoir, as low coolant can prevent the heater from functioning properly. If the coolant is at an adequate level, inspect the thermostat to ensure it’s opening and closing correctly. Additionally, check for any air pockets in the cooling system that may need to be bled out. If these steps don’t resolve the issue, it may be necessary to consult a mechanic for further diagnosis.