If your heater motor turns on but only blows out cold air, it may indicate a few potential issues. One common reason could be a malfunctioning thermostat that isn't signaling the system to heat properly. Another possibility is a problem with the heating elements or the furnace itself, such as a pilot light being out or a blown fuse. Additionally, blocked ductwork or a malfunctioning blower motor could also prevent warm air from circulating.
Probably a bad blower motor. Try tapping the blower motor gently with a hammer when it isn't working. It that makes it work, replace the blower motor.
Cold air blowing out of the heater is a sure sign of low coolant. Antifreeze running out of the front of the motor _could_ be a bad water pump. The two go together like ham & eggs.
VENT TO HEATER CORE IS NOT CLOSING................
You are likely in an antarctic region.
You probably have a bad thermostat.
You may be low on coolant, or the thermostat is stuck open, or the heater core is plugged up, or the temp blend door is broken.
I had a 28 volt motor armature and field rewired,it now turns the wrong way,the technician says it has the wrong commutator installed,,and cannot find a new one.
The AC and heater are completely different subsystems. The heater relies on heat generated by the engine and circulated by the engine coolant (radiator fluid) while the AC uses a belt driven compressor and separate fluids. Their only normal commonalities are the blower motor (which you said works), the ducting and the control head.
An automobile's heater that blows only cold air could either be a faulty thermostat or, more likely, a faulty heater core. A trip to a mechanic or shop that specializes in radiator and cooling system repair should be able to diagnose and repair any problems.
the motor is going out it has freon in it but the motor is shot
From the bottom of the motor contactor's heater block you connect the motor's leads to T1, T2 and T3. If the motor rotates in the wrong direction reverse any two leads on the bottom of the motor's contactor heater block.
When a electrical motor ages it starts to draw more current than the circuit can handle and the fuse blows. I suspect you will need to replace your wiper motor. Do check all the wires/connections going into the motor first.