Heater fan continues to run when heating system turned off.

It sounds like you may have a malfunctioning component in your heating system that is causing the fan to continue running even when the car is turned off. Pulling fuse 47, which controls the climate control blower and ignition 3 relay, stopped the fan from running but may have also caused other issues in the system. Replacing the fuse may not fix the problem, it may be necessary to have a mechanic diagnose and repair the specific component causing the issue.

Check the heater tap turns on and there is good water flow through the hoses and heater core ,check that the water temp is at least 85 deg.cel.. could also be the baffle in the heater core broken off.

Have you waited long enough?
Sometimes it can take 5 -10 minutes before it turns on while using heater.

Empty cooling system and reverse flush the heater core with water hose till water comes out clear. Then reverse procedure till water is clear. Fill system with water and turn car on, while car is running open drain plug and continue to keep radiator full while draining it at the same time turn on your heater with heat on high and blower on high When water is clear flush system and wait for engine to cool down. Refill with antifreeze and turn engine on, check for leaks and to see if you have heat. If still no heat change heat core.Let me know how you make out.

That is pretty much normal, the heater blower fan acts like the radiator does and helps cool the water passing through it by extracting the heat from it. then once the car inside temp warms up it goes back to normal. Nothing to worry about.

I'm making some assumptions, here.. I've been told I make too many assumptions... but, I'm assuming that you're talking about the engine cooling fan.. If I'm correct in this assumption, my guess is that you've not taken the vehicle to a good, reputable mechanic or repair shop. There are several reasons that an engine fan would not turn off, and each reason would have to come from a qualified mechanic. For example, there is a sending unit for the air conditioning system that might cause continuous running... or a sending unit in the air conditioning system that could cause the same thing. To complicate that issue, quite likely your air conditioning system purposely kicks on the engine fan any time you run your defroster. Also, your inside heater should function correctly, regardless of the engine fan running continuously. If I'm wrong on that score, then your engine has a thermostat problem "to boot"... which, by itself, could cause poor heating of the inside of the vehicle. NOW, backing up a little, if you so happen to be talking about the fan INSIDE the vehicle that is part of your heating OR air conditioning, we have a little different matter on our hands... First, some vehicles legitimately have a fan running on slow speed at ALL times.. for continuous air circulation purposes (sometimes, you can't actually hear this). Also, I might add that THIS fan running all the time should not be a problem for the heater to work properly.

disconnect the heat hoses going into fire wall , put hose into one with pressure and flush as it sounds like it could be bloked in the heater core,the other thing that could be the problem be the hot ,cold switch as it restricts the flow to makes the heater hoter or colder , it might need tlc or replacing as it is manaul not elec

the fan will run whether or not the heater core is getting warm, it does not care. you can hear the fan run, sounds like a fan running. if there is air coming out the vents and you hear the fan running, then the problem lies with the heater core.

May just be low coolant level. Remove rad cap, or if none, coolant return bottle cap, and start engine and run heater while doing this. Now pay attention to coolant level and add as needed to top up the system. Let it run with cap off until rad fan comes on and off, 2 or 3 times and keep adding coolant if level goes down. Keep an eye on temperature gauge while doing this. It almost sounds like your coolant got low, or is low, and your heater has an airlock. Once coolant circulates back through heater and level is correct, see what happens.

your electric cooling fan is not switching on that is either 1. you fan is bad which you can test jumping a hot wire to the pos side of the fan if it works then exclude it. 2. your fan works on a ground system there is a coolant fan switch in the head that can cause no fans, and the last 3. nfan relay or fuse bad