Heater Problem

have you bled the cooling system?

Check the coolant level, it may be low. Cooling system would have needed to be bled when refilling the coolant or there would be air pockets in the cooling system causing erratic engine temperature readings, and no heat.

I try doing it but my fans didn't turn on. what might be the problem. And I know they work because when I'm driving I hear them and my temperature gauge was at normal.

Ok, the fans do nothing for purging the air out of the cooling system. The engine needs to run with the radiator cap off to operating temperature so the thermostat opens up. You have the heat set on hot so the coolant can circulate threw the heater core. Leave it run and add coolant when necessary, this will work the air out of the cooling system. You should start to fell heat coming out of your vents, then you know your good. Some cars are hard to bleed, sometimes they need to be brought to a shop. It helps to have the front end of the car elevated.

This Honda might have a bleeder niple where the top radiator hose meets the engine block, loosen up a bit with motor running, untill just coolant runs out clarify fans dont work