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Old 10-13-2011, 12:37 AM   #31
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Inducer Fan Not Turning On


When you disconnect the pressure switch hose does the inducer motor run?

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Last edited by JJboy; 10-13-2011 at 12:41 AM.
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Old 10-13-2011, 12:38 AM   #32
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Inducer Fan Not Turning On


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You need to close the door safety switch.
There's no safety switch for the top, only for the bottom which I have closed.
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Old 10-13-2011, 12:42 AM   #33
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Inducer Fan Not Turning On


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There's no safety switch for the top, only for the bottom which I have closed.
When you disconnect the pressure switch hose does the inducer motor run?
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Old 10-13-2011, 12:43 AM   #34
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Inducer Fan Not Turning On


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When you disconnect the pressure switch hose does the inducer motor run?
You mean disconnect it from the pressure switch side and see if it starts normally?

I disconnected the hose from both ends and turned the breaker back on. Nothing changed, same symptoms.

Last edited by Deemar; 10-13-2011 at 12:45 AM.
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Old 10-13-2011, 12:51 AM   #35
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Inducer Fan Not Turning On


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You mean disconnect it from the pressure switch side and see if it starts normally?
1. A call for heat
2. Inducer motor starts
3. Vacuum proves inducer motor ( close switch )
4 Igniter lights up/ simultaneously 24 v is sent to the gas valve and releases gas and furnace lights.
5. Flame rod proves flame to the board
6. Thermostat is satisfied/ blower runs as timed and cuts off.


The inducer motor should be the first thing to run.....If is not the problem should be.....controller boar, Inducer motor, or wires connections.

Do you see the inducer motor running when you made the furnace working
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Old 10-13-2011, 12:53 AM   #36
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Inducer Fan Not Turning On


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1. A call for heat
2. Inducer motor starts
3. Vacuum proves inducer motor ( close switch )
4 Igniter lights up/ simultaneously 24 v is sent to the gas valve and releases gas and furnace lights.
5. Flame rod proves flame to the board
6. Thermostat is satisfied/ blower runs as timed and cuts off.


The inducer motor should be the first thing to run.....If is not the problem should be.....controller boar, Inducer motor, or wires connections.

Do you see the inducer motor running when you made the furnace working
Yes, the blades were spinning just fine. When I shut it down, they came to a slow stop. The blades, that's what you mean right? Right where the vacuum tube is connected in the black frame.
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Old 10-13-2011, 12:58 AM   #37
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Inducer Fan Not Turning On


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Yes, the blades were spinning just fine. When I shut it down, they came to a slow stop. The blades, that's what you mean right? Right where the vacuum tube is connected in the black frame.

You need to use your multimeter in VAC and connect on the back of the inducer connector...( I think are Black/write wires). Let me know the voltage

The led code error you need to look at controller board. I think you are looking at at gas valve.
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Last edited by JJboy; 10-13-2011 at 01:03 AM.
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Old 10-13-2011, 01:17 AM   #38
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Inducer Fan Not Turning On


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You need to use your multimeter in VAC and connect on the back of the inducer connector...( I think are Black/write wires). Let me know the voltage

The led code error you need to look at controller board. I think you are looking at at gas valve.
The black/white wires from the inducer fan are showing 122 volts while it's on. I let it run for about 2 minutes and I was wondering if it was hot so I tried to touch it.....WOW, this thing was scorching hot. I mean I touched it for barely a second and my finger's going to swell up, it's burning.

1 second after I turn the furnace on, the controller board flashes 4 lights, then gives me the heartbeat. They can't be an error code because it's literally 1 second after I turn the furnace on, it doesn't wait at all. And since I'm getting the heartbeat afterwards I assume there's no error code at all. However, 4 lights does correspond to an error in the manual: "Control is in lockout due to no air flow (overheated)" Again, how can it be overheated if I get this flashing 1 second after turning on the furnace?
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Old 10-13-2011, 01:26 AM   #39
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Inducer Fan Not Turning On


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Originally Posted by Deemar View Post
The black/white wires from the inducer fan are showing 122 volts while it's on. I let it run for about 2 minutes and I was wondering if it was hot so I tried to touch it.....WOW, this thing was scorching hot. I mean I touched it for barely a second and my finger's going to swell up, it's burning.

1 second after I turn the furnace on, the controller board flashes 4 lights, then gives me the heartbeat. They can't be an error code because it's literally 1 second after I turn the furnace on, it doesn't wait at all. And since I'm getting the heartbeat afterwards I assume there's no error code at all. However, 4 lights does correspond to an error in the manual: "Control is in lockout due to no air flow (overheated)" Again, how can it be overheated if I get this flashing 1 second after turning on the furnace?

You have to measure 120VAC even the inducer motor is not running. I do not want you do the trick to make the furnace work .... I'm trying to see if the controller is giving voltage to the inducer.

If there is 120V at the inducer connector.....the inducer is bad, you still can confirm this troubleshooting by measuring the resistence
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Old 10-13-2011, 01:30 AM   #40
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Inducer Fan Not Turning On


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You have to measure 120VAC even the inducer motor is not running. I do not want you do the trick to make the furnace work .... I'm trying to see if the controller is giving voltage to the inducer.

If there is 120V at the inducer connector.....the inducer is bad, you still can confirm this troubleshooting by measuring the resistence
It read 0 the whole time, no voltage at all. That was with letting the furnace try to start itself normally.
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Old 10-13-2011, 01:42 AM   #41
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Inducer Fan Not Turning On


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It read 0 the whole time, no voltage at all. That was with letting the furnace try to start itself normally.
Ok, there are two problems ... inducer motor hot when is running and controller board is not providing 120V to the inducer.

You already disconnected the wires from the pressure switch? still the same problem.....
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Old 10-13-2011, 01:44 AM   #42
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Inducer Fan Not Turning On


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Ok, there are two problems ... inducer motor hot when is running and controller board is not providing 120V to the inducer.

You already disconnected the wires from the pressure switch? still the same problem.....
Yes, with wires disconnected from switch, same symptoms, nothing changed. Except then when I suck on the hose, I can't get the furnace to come on.

Any ideas why a (supposedly) functioning board and also a brand new board would not be sending 120 to the fan?

Please leave any additional information for me to see in the morning, I have to go to bed now, very late here. Thanks for helping me tonight.
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Old 10-13-2011, 01:48 AM   #43
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Inducer Fan Not Turning On


Ok, let me think more about this problem
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Old 10-13-2011, 09:08 AM   #44
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Inducer Fan Not Turning On


for the love of all things holy, you got your answer 150 replies ago. Get a new inducer assembly, not just the motor. The visible blades turning from the rear have nothing to do with the impeller (air moving device).
If you have 120 volts going into the motor and its not running, its the motor
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Old 10-13-2011, 12:43 PM   #45
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Inducer Fan Not Turning On


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for the love of all things holy, you got your answer 150 replies ago. Get a new inducer assembly, not just the motor. The visible blades turning from the rear have nothing to do with the impeller (air moving device).
If you have 120 volts going into the motor and its not running, its the motor
i was thinking the same but didn't know how to say without being rude. Open, you're making this much more complicated than it needs to be.

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