Why does your rover 45 only blow out cold air from heaters it was working fine last week?

If your rover is only blowing out cold air from the heaters despite working fine last week, it could be due to a few common issues. Check if the coolant levels are low, as insufficient coolant can prevent the heater core from warming up. Additionally, a malfunctioning thermostat, a clogged heater core, or issues with the HVAC controls could also be the cause. It's advisable to have a professional inspect the system for any underlying problems.