Furnace won't work because of a loose Inducer Motor Connector

On most Goodman's the three blinking lights indicate an issue with the pressure switch circuit. That can usually mean one of 4 things.

1. Your flue is blocked with debris.
2. Inducer motor has failed or is not reaching proper speed to satisfy switch.
3. Pressure switch or inducer connections are loose.
4. Pressure switch is bad.

Could be several causes.
1. Blockage on piping
2. Water in inducer housing slowing down inducer impeller
3. Condensate trap for furnace clogged up.
4. Inducer motor going bad.
5. Leak in vacuum hoses or not connected.
Welcome To the Best HVAC

power to gas valve ok .. Replace gas valve after checking gas valve coil for continuity/resistance... with valve removed ...and power to valve ... try blowing thru valve from supply side ... stuck valve.... replace...

Are your air filters relatively new? Is a bird nesting in your units combustion air exhaust pipe? Does your draft inducer motor run before and after the gas has ignited? Check and confirm these 3 things first. Good Luck!

I would first try to power up the inducer motor by itself. If this works without any issue than the next step is to look at the circuit board. You will need a multimeter. Set it to 120V AC and test the leads on the circuit board that the inducer motor attach to. Turn the system on and see if you get a reading on the meter, if so, then you know the motor is getting power. I would then check the legend of your furnace with the led pattern. You mention it is steady, look up what the steady light means. It may point to a control board error, in that case you will need to replace the board.

what brand furnace is it? is there any blinking light on the control board? is the tube going to the pressure switch blocked? there should be a tube going from the pressureswitch to the inducer motor housing take it loose from the inducer and check for obstruction there,dont blow back into the switch.

Check to see if theres power getting to the inducer motor, also check for loose or damaged wiring. If theres power the motor is bad. If not check the air flow switch, usually a disk shape with a silicone hose attached and two wires... take the hose from the furnace and blow into it and test to see if theres continuity, this switch is normally open and when you blow the switch closes. This is to make sure that the main blower is running so the combustion chamber doesnt burn up (and your house). Make sure your air filter is clean! If the switch is operational it could be the relay that controls the inducer motor, on newer models the relay is on the control board, check for error codes... try these things and if that doesnt work call your local furnace repairman!

Go ahead, just turn off power to breaker box first, or you'll be cursing for at least 10 minutes...