What happens if you turn off the blower?
If the switch turns the blower off you should be okay but when this type of trouble happens with models using a solid state module to control the blower speed usually you have no control of the blower when the module fails. The blower will either be on all the time or you have no blower at all, depending the failure of the speed control module.
Why does my furnace blower fan not shut off?
Perhaps there is a defective fan limit control or fan relay control switch. Sometimes my blower fan won’t shut off for a while. It will work for half the day and then the other half of the day it will not shut off.If I flip the breaker off and right back on the fans stays off until the next cycle.
Is there a way to stop the blower motor?
The fan control no longer works. The only way I can stop the fan is if I turn the vehicle off, then press OFF then restart the vehicle. If I dare put the climate control thing back to life -> blower motor goes full blast and cannot be stopped unless I turn off the vehicle.
Can a 30 amp fan switch work on a blower?
The horn switch can be fine, but the horn will blast away if the horn relah sticks. Here’s how the circuit works. 30 amp fuse hot all the time first to the contacts of the relay. Fan speed switch has off, which cuts power from the contacts from the fan relay to the resistor module.
The fan control no longer works. The only way I can stop the fan is if I turn the vehicle off, then press OFF then restart the vehicle. If I dare put the climate control thing back to life -> blower motor goes full blast and cannot be stopped unless I turn off the vehicle.
Perhaps there is a defective fan limit control or fan relay control switch. Sometimes my blower fan won’t shut off for a while. It will work for half the day and then the other half of the day it will not shut off.If I flip the breaker off and right back on the fans stays off until the next cycle.
Why does my blower not work at high speeds?
Blower works on slow speeds, but not on high speed. Check for bad fuse or bad high speed relay. Swap the high speed relay with another relay with the same part number. Also, check the fuse for the control side of the high speed relay. Make sure the ground side of the high speed relay is working. Blower works on some speeds but not others
What to do if your a / C fan won’t turn off?
At the room thermostat: the FAN-AUTO-OFF or FAN ON/OFF switch on the room thermostat should be checked. The fan control should be set to AUTO. You can try turning the switch to OFF too. Other snafus such as a shorted thermostat wire can also cause the A/C or warm air furnace fan to run continuously. at THERMOSTAT WON’T TURN OFF. 2.