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Goodman Problems I just installed a Goodman Model HKSC15XBAA electrical unit and can not get it to run, I hear a hum but the burners will not fire.

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 5 Answers

SOURCE: Newly installed Goodman GPG13 gas/electric

new unit and old thermostat/wire? thermostat could be bad or bad thermostat wires. try putting in new of anything old. do this wiring practice with the terminals being the letters.

r- red (24 volts)
w- white ( heat)
y- yellow (cooling)
g- green (fan)

Posted on Sep 22, 2008

  • 124 Answers

SOURCE: Goodman U-30 Furnace

observe the sequence of operation. stat calls for heat and sends a signal, to furnace. check for 24 volts to common and white wire at furnace.first the forced draft motor starts and should have 120 volts to the plug it attaches to. after forced draft motor starts the pressure or vacuum switch closes should show no 24 volt when checked across terminals. shortly after the ignitor glows and shortly after click the main gas valve opens and main burners fire. shortly after the indoor fan comes on and hot air blows into the ductwork. follow the chain of events to see what doesnt happen and it is a clue to whats broke. maybe start by switching fan switch on stat to on. if fan comes on you have high and low voltage thereby eliminating the stat power and transformer as a problem. if you can see the ignitor look for it to be cracked . look close dont touch any part of it .it is powered by 120 volts when energized from board. dont forget when you take the door off there is no power to the furnace so be prepared to tape the safety switch closed when you are diagnosing.

Posted on Oct 24, 2008

FunnyPlumber
  • 43 Answers

SOURCE: fan won't turn on outside unit but has a hum noise

Be sure you have power, 220VAC to unit. You may have blown fises or tripped circuit breaker.

Posted on Jun 23, 2009

  • 21 Answers

SOURCE: Goodman 3 ton outside unit fan not blowing

Motor, wiring and/or capacitor. If the sticker on the side of the motor isn't burned off you can get the motor info off that. Model numbers from the motor do little for locating the motor but my help. Best thing to do is get the AC motor specs and look up online (cheapest) or go to a motor shop. The specs you need would be as follows.
Horsepower-Such as 1/4 or 1/3
Voltage-Most likely 240/1 (240vac single phase)
Rotation-CW/CCW looking at the shaft end of the motor
Amps
Frame size

Posted on Jul 11, 2009

  • 232 Answers

SOURCE: I have a Goodman GSC130241AB unit and the fan is

test the capacitor, if its bloated its bad, check the breaker. i would need some more info to help you more.

Posted on Sep 26, 2009

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If the hot surface ignitor comes on and fires the burners, and then shuts back down, you need to take a look at the flame sensor. It is a ceramic rod with a metal tip that rests in the pilot flame. When heated from burners, it sends a signal to the main control module, circuit board, which ever this unit is equipped with to keep the burners on. It is a safety to shut the burners down if there is a problem. Take some fine steel wool to clean the metal tip on this and this should take care of the problem. If this does not do it, then 99% of the time you have a faulty control board or module. It will have to be replaced.It is where this flame sensor connects.It will continue to drop out of the circuit, and the fan will start and run. You're T-stat is good or the Hot Surface ignitor would not glow. You will need to take as much info you can from the unit, Goodman and the control, all numbers with you.You can purchase this part at a appliance parts house, or air conditioning parts house. Please keep me informed, I would like to hear back from you. I hope this has given you some direction to follow.Good Luck,
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observe the sequence of operation. stat calls for heat and sends a signal, to furnace. check for 24 volts to common and white wire at furnace.first the forced draft motor starts and should have 120 volts to the plug it attaches to. after forced draft motor starts the pressure or vacuum switch closes should show no 24 volt when checked across terminals. shortly after the ignitor glows and shortly after click the main gas valve opens and main burners fire. shortly after the indoor fan comes on and hot air blows into the ductwork. follow the chain of events to see what doesnt happen and it is a clue to whats broke. maybe start by switching fan switch on stat to on. if fan comes on you have high and low voltage thereby eliminating the stat power and transformer as a problem. if you can see the ignitor look for it to be cracked . look close dont touch any part of it .it is powered by 120 volts when energized from board. dont forget when you take the door off there is no power to the furnace so be prepared to tape the safety switch closed when you are diagnosing.

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