Tom O.
New Member
Hi all,
I have a Comfortair Patriot oil furnace, very simple system.
This year at 5 years to the month since I got it the blower motor blew out when I fired it up for the first time since May. (motor actually caught fire)
I bought a new motor and capacitor (exact oem, 4 speed)
There is no PCB controller, there is a SPST time delay relay that is for when the furnace is running. (blue wire)
There is a DPDT relay for turning on the blower, and when actuated cuts the power to the blue wire & activates the black wire.
Supply 120v ac voltage is supplied directly from the main junction box.
Solenoids are 24v
At idle, I show 4-6 volts AC between common and blue or black, without the motor connected.
With the air cond turned on I get 120v on the black lead and 12v AC on the blue.
With heat turned on, I get 120v on the blue lead, and about 6v AC on the black.
Motor is not connected on any test.
Is this leakage normal?
I always thought it should read zero, and I know applying voltage to more than one tap on a multi speed motor is bad.
I don't want to fry my brand new motor.
Thanks
Tom
I have a Comfortair Patriot oil furnace, very simple system.
This year at 5 years to the month since I got it the blower motor blew out when I fired it up for the first time since May. (motor actually caught fire)
I bought a new motor and capacitor (exact oem, 4 speed)
There is no PCB controller, there is a SPST time delay relay that is for when the furnace is running. (blue wire)
There is a DPDT relay for turning on the blower, and when actuated cuts the power to the blue wire & activates the black wire.
Supply 120v ac voltage is supplied directly from the main junction box.
Solenoids are 24v
At idle, I show 4-6 volts AC between common and blue or black, without the motor connected.
With the air cond turned on I get 120v on the black lead and 12v AC on the blue.
With heat turned on, I get 120v on the blue lead, and about 6v AC on the black.
Motor is not connected on any test.
Is this leakage normal?
I always thought it should read zero, and I know applying voltage to more than one tap on a multi speed motor is bad.
I don't want to fry my brand new motor.
Thanks
Tom
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