Question about Goodman GMS90703BXA Heater

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6 blinks Troubleshooting section of manual does not cover 6 blinks. Furnace starts the flue blower and circulating blower the shuts down the flue blower after a few seconds. However the circulation blower will stay on constantly. Flashing LED 6 times.

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Sounds to me like i wish i could find out if this is new install or if the electric has been changed recently,,,sounds like reversed polarity on the plug,,,which means the white and black wires need to be swapped. If there has not been change recently than u need to see the other post i made on goodman about the combustion fan motors and there types and fixes. But almost certain that is reversed polarity. good luck

Posted on Oct 25, 2008

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I have a CCA24FCC that keeps shutting the furnace off for lack of air flow. The blower seems o be working well, i have replaced the filter even when it appears to be clean. Is there a sensor that measures...


There are 2 blowers to be concerned with. The main blower simply passes the household air over the heat exchanger to provide warm air for the supply vents. The other blower, which is more important, is the draft inducer blower. This is a smaller blower that starts first to create a negative pressure in the fire box to ensure that carbon monoxide gases will pass up the flue when the gas jets ignite. There is a pressure switch associated with this blower. When the inducer blower starts, it pulls air up thru the flue until the pressure switch activates. Then the gas jets can ignite, warming the heat exchanger. A few seconds later, the main blower will start to warm the air. If the inducer blower or the pressure switch is faulty, the furnace will not fire up.

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Why does the led on my furnace control bd flash three times


Hello, this indicates a open limit switch. A limit l switch will open when the temp in the heat exchanger gets too high and this switch shuts the Furnace down for safety. Usuaully a dirty filter, weak blower motor, dirty blower wheel will cause a limit switch to open.

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Need your model # to check the codes but, this coming back on after turning the t-stat off is rare. You may have been in a lockout and the furnace re-started. Some furnaces try to start three times , then lock out. Time out, then re-start. The codes should be on your furnace blower door. Write back with this info and i could help.

Oct 12, 2011 | Goodman GMS90703BXA Heater

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I have a Ducane MPGA100B4B gas furnace. The furnace only runs for about a minute then shut off. It does this far too frequent.\r\n First the induce draft blower turned on for a few seconds to check for...


Hello, sounds like the limit switch is opening on the furnace.Usually when a furnace goes off on its high limit is becuase the airflow is being restricted making the furnace overheat. a limit switch is there to protect the furnaace from overheating, most cuases are either dirt or the blower motor not running up to speed, anything that cuts down on the airflow will cause the high limt switch to open.

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1 Answer

Suddenly not working im not sure if there even is a pilot to be lit


Goodman have troubleshooting idiot lights on the board. Look for flashes and count em.
The flash explanations are printed on the backside of the blower cover on most models.
A sampling of various failure codes on a furnace:

Read one LED flash that stays on continuously to mean your furnace has no signal coming from the thermostat and will not operate. Turn the power off and check the thermostat for improper settings or connections.

Interpret one LED flash that blinks on and off to mean your furnace has locked out because it could not ignite after three tries, and must be reset. Interrupt power to your furnace for 20 seconds or lower the thermostat so your furnace does not try to heat, then reset the thermostat to the previous setting. After one hour of lockout, your furnace will automatically reset itself and try to operate as usual.

Decipher two LED flashes to mean the draft blower is not working, or your furnace has a short in the pressure switch circuit. Turn off the furnace power and repair a short or replace the pressure switch.


Read three LED flashes to mean your furnace has an open pressure switch circuit or it has an induced draft blower operating. Check the pressure switch hose of your furnace for blocks or an improper connection. Also, look for blockages in the flue, and tighten any loose wiring.

Translate four LED flashes to mean your furnace has a primary limit circuit open, possibly from loose wiring or blocked filters. Check and clean filters, tighten wiring and check the flue for blockages.

Interpret five LED flashes to mean your furnace senses a flame without a call for heat. This could be from a gas valve closing slowly or a burner flame lingering.



Read seven LED flashes as a warning of a low flame sense microamp signal. This could happen with a coated flame sensor or a lazy flame from poor gas pressure. Turn off the power and adjust the gas pressure according to the information on the rating plate.



See eight LED flashes as meaning an igniter circuit problem due to a bad igniter or an igniter connected improperly. Replace the bad igniter or check the ground wiring, making necessary corrections.



Decipher nine LED flashes to mean the high-stage pressure switch circuit will not close during a high-stage-induced draft blower operation. Your furnace may have a pinched or blocked pressure switch hose, a blocked flue or loose wiring.

Read continuous flashing on the LED to mean your furnace has a reversed polarity of 115 volts. Turn off the power and correct the wiring polarity after reviewing the wiring diagram.

Feb 03, 2011 | Goodman Heating & Cooling

1 Answer

What is code flashing 6 times mean?


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Sorry to read about your problem, I hope this helps you out.

Circulator blower runs continuously. No furnace operation. Integrated control module diagnostic LED is flashing SIX (6) flashes.
6 FLASHES
1 Rollout limit circuit is open.
2 Flame rollout. i? Misaligned burners, blocked
flue and/or air inlet pipe, or failed induced draft blower.
3 Loose or improperly connected wiring.
4 Check burners for proper alignment.
5 Check flue and air inlet piping for blockage, proper length, elbows, and termination. Correct as necessary.
6 Check induced draft blower for proper performance. Replace, if necessary.
7 Tighten or correct wiring connection.

Turn power OFF prior to repair.
i? See i?Vent/Flue Pipei? section for piping details.
i? Ensure the correct pressure switch replacement is used.

THIS IS A GAS PRODUCT, INCORRECT REPAIR CAN CAUSE A EXPLOSION, AND DEATH CAN OCCUR. IF YOU DO HAVE THE PROPER TOOLS SUCH AS MANOMETER AND LEAK DETECTORS, I SUGGEST YOU CONTACT A SERVICE COMPANY

Dec 29, 2010 | Goodman GMS90703BXA Heater

1 Answer

I have a furnace that has a draft inducer blower that will start and shut down, it will re-start and shut down again or it may run through the entire cycle and run fine. I had a heating tech take a look at...


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1 Answer

Loud noise when furnace starts but furnace won't come on.


Your fan delay relay has failed and must be replaced.

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2 Answers

Furnace won't stay running


1
1 FLASH
Furnace fails to operate.
• Integrated control module
diagnostic LED is
flashing ONE (1) flash.
• Furnace lockout due
to an excessive
number of ignition
“retries” (3 total)1.
• Failure to establish flame.
Cause may be no gas to
burners, front cover
pressure switch stuck open,
bad igniter or igniter
alignment, improper orifices,
or coated/oxidized or
improperly connected flame
sensor.
• Loss of flame after establishment.
Cause may be
interrupted gas supply, lazy
burner flames (improper gas
pressure or restriction in flue
and/or combustion air
piping), front cover pressure
switch opening, or improper
induced draft blower
performance.
• Locate and correct gas
interruption.
• Check front cover
pressure switch
operation (hose, wiring,
contact operation).
Correct if necessary.
• Replace or realign
igniter.
• Check flame sense
signal. Sand sensor if
coated and/or oxidized.
• Check flue piping for
blockage, proper
length, elbows, and
termination.
• Verify proper induced
draft blower performance.

Nov 23, 2008 | Goodman GMS90703BXA Heater

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