Hi all,
Having some issue with my old, old, old Lennox Pulse G14 (G14Q3-60-1). The furnace started working fine this season, but when I came home on Friday the and turned up the stat the furnace came on, I could hear it because of the infamous pulse, but after a couple of minutes shut back off.
I have done some troubleshooting and have concluded that the blower motor is not coming on, forcing the furnace to shut off when it reaches the internal temperature specified on the fan limit switch.
I am on the verge of just buying a new blower motor, but am a little hesitant. I know all about the Lennox recall on these units and other safety concerns, so I know most people would just tell me to replace the thing already.
I checked the voltages on the unit this morning and it was receiving 120V where power comes in, but was only reading ~90ish volts at the fan limit switch and at the wires going to the blower, so now I'm second guessing myself about the motor.
Other info:
I checked and cleaned the sensor for the heat exchanger, the wire there seemed a little corroded so I stripped it and re-did the connection.
Just to recap, the furnace, induction motor, everything seems to be running fine until the point the blower should kick on to distribute the hot air through the house, which never happens forcing the furnace to shut off.
Thanks for any and all help!
Trying to Stay Warm in Syracuse,
GoOrange
Having some issue with my old, old, old Lennox Pulse G14 (G14Q3-60-1). The furnace started working fine this season, but when I came home on Friday the and turned up the stat the furnace came on, I could hear it because of the infamous pulse, but after a couple of minutes shut back off.
I have done some troubleshooting and have concluded that the blower motor is not coming on, forcing the furnace to shut off when it reaches the internal temperature specified on the fan limit switch.
I am on the verge of just buying a new blower motor, but am a little hesitant. I know all about the Lennox recall on these units and other safety concerns, so I know most people would just tell me to replace the thing already.
I checked the voltages on the unit this morning and it was receiving 120V where power comes in, but was only reading ~90ish volts at the fan limit switch and at the wires going to the blower, so now I'm second guessing myself about the motor.
Other info:
I checked and cleaned the sensor for the heat exchanger, the wire there seemed a little corroded so I stripped it and re-did the connection.
Just to recap, the furnace, induction motor, everything seems to be running fine until the point the blower should kick on to distribute the hot air through the house, which never happens forcing the furnace to shut off.
Thanks for any and all help!
Trying to Stay Warm in Syracuse,
GoOrange