Cold heaters on Kia Sedona MK1 2000 W plate. Whilst running the engine and looking under the dash I can see all the moving parts on the outside of the heater box and a large white paddle device which I assume is the Blend Door. As I turn the knob on the dash to each position everything seems to move smoothly and the large white paddle moves to each different position without any problems. Does this mean the actuator is working properly and therefore my cold heaters are being caused by something else or does the actuator control the temperature sent through as well. If this is working correctly what could be causing my heaters to blow cold all the time? Any help would be much appreciated. Thanks, Phil.

Thank you for the quick reply. I'll look for the heater water control valve 2moro. The heater doesn't feel warm after being turned off for a few minutes and then turned on so I'm guessing the core isn't blocked. I'm not sure how quickly the engine should heat up or how warm especially as it's cold outside at the moment. I've only had the car for a few days, but the temp guage does take a long time to move and doesn't go very high when it does. I'll let you know what I find.

Thanks, Phil. Thank you for the quick reply. I'll look for the heater water control valve 2moro. The heater doesn't feel warm after being turned off for a few minutes and then turned on so I'm guessing the core isn't blocked. I'm not sure how quickly the engine should heat up or how warm especially as it's cold outside at the moment. I've only had the car for a few days, but the temp guage does take a long time to move and doesn't go very high when it does. I'll let you know what I find. Thanks, Phil.

You can put a paper or cardboard sheet in front of the radiator behind the grille until spring to keep the engine a little warmer in cold climates. I do not have a book on Sedona, as I don't think it is sold over here, but the other Kia models do not seem to have a heater water control valve. Recommend you feel the heater hoses as they hook up to the heater core at the firewall to see if they are getting hot. You can put a paper or cardboard sheet in front of the radiator behind the grille until spring to keep the engine a little warmer in cold climates. I do not have a book on Sedona, as I don't think it is sold over here, but the other Kia models do not seem to have a heater water control valve. Recommend you feel the heater hoses as they hook up to the heater core at the firewall to see if they are getting hot.