Question about Heating & Cooling
I would contact goodman that would probably be the best place for info
Posted on Oct 20, 2013
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
SOURCE: Goodman furnace I think
Ok, a flashing 3 on a Goodman control board usually means that the pressure switch is tripping. A few things will cause this. One being a restriction in the exhaust or combustion air inlet. The second could indicate a faulty inducer blower motor and the third would be a blocked or bad pressure switch.
With the front cover off and door switch taped down, Have a helper turn the thermostat up to 75. You will be watching the circuit board for flashing lights and in a few seconds the inducer motor (the small fan hooked to the exhaust) will start. If this does not happen, we either have a bad circuit board or blower motor. If the fan starts rotating, inspect the hoses going to the small circular pressure switch. Sometimes they may get either water or debris in the hose and not allow the switch to sense pressure. If the hoses look OK, the igniter will glow an orange color and you will see this if you look thru the small viewing port. IF no glow, you could have a bad pressure switch, a bad ignition relay (found on the circuit board) or a bad igniter. OK so if the igniter glows, a few seconds later the gas valve should click open and send gas to the burners. The orange will turn to blue. If this does not happen, you have either a bad gas valve or bad circuit board. Finally if you get flame but it will not stay lit more than a few seconds, you may have a restriction in the burner gas train, a bad gas valve, a dirty or bad flame sensor or not enough gas pressure.
Knowing the sequence of operation will give you the needed information to talk with a service technician and cut down on diagnostic costs.
Try looking on the back of the furnace access panel for both model number and a diagnostic schematic. This will confirm what the flashing 3 code means for your unit.
Sorry, without knowing the model number, this is the best I can do for you. Good Luck!
Posted on Oct 29, 2007
SOURCE: furnace won't stay running
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
• 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
• Locate and correct gas
• Check front cover
operation (hose, wiring,
Correct if necessary.
• Replace or realign
• Check flame sense
signal. Sand sensor if
coated and/or oxidized.
• Check flue piping for
length, elbows, and
• Verify proper induced
draft blower performance.
Posted on Nov 25, 2008
The first thing to look at is the flame sense rod.
Shut off power to the furnace, remove, clean sensor with steel wool or sandpaper then reinstall the sensor. Reapply power and it should run properly.
Posted on Jan 10, 2009
SOURCE: Goodman GDS8 Furnace Won't Cycle
I had the same issue as zippygaloo with the harness plug. By lifting up the connector, the furnace would go out of it's current fail mode and start operating normal again. I have temporarily resolved my issue, by tying up the wires (looped under them with tie raps) and secured them to the vented furnace housing directly above, thus alleviating any stress pulling down on the connector plug by the weight of the wires. Since doing this my furnace has been running flawlessly and stays right at the temp on the Tstat. No more fault modes with blinking lights! Hope this helps you guys. I don't know if it's related to bad design flaw, or there is a weak connection on the board, but it worked for me.
Posted on Mar 01, 2009
Tips for a great answer:
Nov 29, 2011 | Goodman Heating & Cooling
Jan 07, 2011 | Goodman GMS90703BXA Heater
Dec 10, 2010 | Goodman GMS80903BNA Heater
Jul 20, 2010 | Goodman Heating & Cooling
Feb 18, 2010 | Goodman Furnace Draft Inducer Blower ...
Jan 22, 2010 | Goodman Furnace Draft Inducer Blower ...
Nov 27, 2009 | Goodman GMS90703BXA Heater
Nov 04, 2009 | Heating & Cooling
Feb 13, 2009 | Goodman GMS90703BXA Heater
Nov 04, 2008 | Goodman GMS90703BXA Heater
145 people viewed this question
Usually answered in minutes!