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The blower motor is drawing to many amps, replace the blower motor.
The blower resistor is probably bad, due to a failing blower motor that is drawing too many amps.
The blower motor is failing and drawing too many amps.
The blower is drawing to many amps. Have it checked. If that's not it. your blower motor is shorted out. Om the motor to the frame.
( # 19 ) in the Power Distribution Box ( which is " live " ) located in the engine compartment is a ( 40 AMP FUSE FOR THE HEATER BLOWER MOTOR ) on a 2007 Ford Focus
The blower motor speed resistor is burned out. Keep in mind that in many cases the speed resistor burns out because the blower motor is failing and drawing to many amps. So if the new resistor burns out soon, next time replace the blower motor also.
Your ignition switch has failed. There is a good chance that the wiring plug for the switch has melted slightly due to a blower motor that is pulling too many amps. You will have to replace the switch, plug, and blower motor.
Yes, the blower tends to draw too many amps. Too many amps in the circuit will overheat the wires and connecters and melt them.
You probably need a blower motor. Check the Hot electrical feed to the motor. If you have replaced the resistor block you know where the motor is located (just to the right) It is easy to replace and can be purchased everywhere, including a junk yard. Remember some Resistor Blocks fail because the motor is old and drawing to many amps.
Electric furnaces are rated in Kilowatts. The following formula will let you figure it out. Watts = amps x volts. For eg. a 10 Kw furnace draws 10000 watts. amps = watts/volts. 10000/240 = 41.6 amps. If your furnace differs from this example, just plug in your wattage and you will have your answer.
There is only one blower motor resistor and it is located in the evaporator housing.
about 3 or 4